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Flow Control Technical Charts

Find pipe sizing charts, flange dimension tables, and bolt & stud specifications for Australian and American piping standards in one place. This page covers pipe sizing to AS1074 and ANSI B36.10, flange dimensions to AS2129, AS4087, ISO 7005 and ANSI B16.1/B16.5, plus bolt sizing and temperature/pressure ratings for flanged joints. Use the tabs below to quickly locate the exact chart, table, or standard you need — from pipe mass and bundling data through to ANSI flange pressure ratings.

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Pipe Sizing Charts

Compare nominal and outside diameters across pressure and non-pressure pipe materials — including ductile iron (DICL), steel, uPVC, GRP, cast iron and reinforced concrete — against their governing Australian Standard. Use these pipe sizing charts to match nominal diameter (DN) to actual outside diameter when specifying or cross-checking pipe to AS2280, AS1477, AS1074, AS4130 and related standards.

Pressure Pipe Sizing Chart

Pressure Pipe									Nominal Diameter
Name	Material	Designation	Standard	50	65	80	100	125	150	175	200	225	250	300	350	375	400	450	500	525	600	675	750	900	1000	1100	1200
ISO	DICL	International	DIS2531E	66	77/82	98	118	144	170	.	222	.	274	326	378	.	429	480	532	.	635	738	842	945	1048	1152	1255
DICL	DICL	Class K9 or K12	AS2280	.	.	96	122	.	177	.	232	259	286	345	.	426	.	507	560	.	667	.	826	.	.	.	.
HOBAS	Hobas	(GRP)	AS1413	.	.	.	122	.	177	.	232	259	286	345	399	426	453	507	560	587	667	747	826	924	1026	.	1229
CICL	CICL	Class B	AS1742-2	.	.	.	122	.	177	.	232	259	286	334	.	413	.	492	545	.	650	.	.	.	.	.	.
CICL	CICL	Class C	AS1544	.	.	96	122	149	177	203	232	259	286	345	.	426	.	507	560	.	667	.	.	.	.	.	.
AC	AC	Class AB	AS1711	.	.	96	122	.	177	.	232	259	286	334	.	413	.	492	.	572	650	.	.	.	.	.	.
AC	AC	Class CD	AS1711	.	.	96	122	.	177	.	232	259	286	345	.	426	.	507	.	587	667	747	826	.	.	.	.
uPVC	uPVC	CIOD (Blue)	AS1477	.	.	.	122	.	177	.	232	259	286	345	.	426	.	507	.	560	667
uPVC	uPVC	Metric White	AS1477	60	75	89	114	140	160	200	225	250	280	315	355	400	450	500	560	.	630	.	.	.	.	.	.
STEEL	Steel	MSCL	AS1579	.	.	.	114	.	168	.	219	.	273	324	356	.	406	457	508	.	610	.	762	914 960	1016 1050 1067	.	1200 1283 1290
STEEL	Galv.	GWI	AS1074	60	76	89	114	140	165	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
PE	PE	To Actual OD	AS4130	50	63	75 90	110	125	140 160	180	200	225	250	280 315	355	.	400	450	500	560	630	.	730 800	900	1000		1200
RC	RC	Class 2-12	AS4058	.	.	.	.	.	197	.	.	279	.	362	.	445	.	533	.	616	699	787	870	946	1029	1105 1194	1270 1354
CU	CU		AS3688	51	64	76	102	127	152	.	203	229	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Note: These charts should only be used as a guide. Figures are rounded to the closest decimal place - Use actual pipe measurements for accuracy
Handy tip: To get accurate average diameter divide circumference by 3.142 (pi) Eg. If circumference is 383mm then diameter = 121.9mm
Caution: Steel and reinforced concrete have many intermediate sizes that have not been included here.

Non-Pressure Pipe Sizing Chart

Non-Pressure Pipe									Nominal Diameter
Pipe	Material	Designation	Standard	50	65	80	100	125	150	175	200	225	250	300	350	375	400	450	500	525	600	675	750
VC	VC		AS1741	.	.	.	138	.	194	.	.	280	.	370	.	450	485	535	.	635	710	.	.
FRC	FRC	Class X		.	.	.	124	.	179	.	.	261	.	345	.	426	.	510	.	594	679	.	.
AC	AC	Class 35	AS1712	.	.	.	120	.	177	.	230	257	283	336	.	419	.	497	.	576	657	.	.
AC	AC	Class 50	AS1712	.	.	.	122	.	183	.	236	262	289	344	.	425	.	505	.	585	664	.	.
CI	Cast Iron	Soil	AS1631	.	.	85	114	140	165	.	.	244	.	323	.	.	.	.	.	.	.	.	.
uPVC	uPVC	SWV	AS1260	59	69	83	110	.	160	.	.	.	.	.	.	.	.	.	.	.	.	.	.
uPVC	uPVC	Sewer	AS1260	.	.	.	110	.	160	.	.	250	.	316	.	401	.	.	.	.	.	.	.
Blac Brute		Internal Diameter	DN16961	.	.	.	.	.	.	.	.	.	.	.	.	365	.	440	.	.	590	..	740
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Heavy & Medium Pipe to Australian Standards

Dimensions, working pressures and mechanical properties for medium (M) and heavy (H) grade steel pipe manufactured to AS 1074 and AS 1163 (Grade C250). Includes working pressures for welded joints, thread specifications to AS 1722, and supply conditions for black, painted and galvanised finishes.

Working Pressures - Welded Joints

CHS Grade C250				MASS AND BUNDLING DATA -Calculated in accordance with AS 1163
DIMENSIONS				BUNDLING				MASS
Designation			Nominal	Bundle		Lengths	Metres	Nominal Mass				Mass Per Bundle Bundle
Designation			Size	Dimensions		per	per	kg/m		m/tonne		tonnes
do	t		DN	mm		Bundle	Bundle	kg/m		m/tonne		tonnes
mm	mm		mm	W x H		6.5m	Metres	Black	Galv	Black	Galv	Black	Galv
26.9	2.6	CHS	20M	350	306	127	825.5	1.56	1.6	642	623	1.29	1.32
	3.2	CHS	20H	350	306	127	825.5	1.87	1.92	535	522	1.54	1.58
33.7	3.2	CHS	25M	327	327	91	591.5	2.41	2.46	415	406	1.42	1.46
	4	CHS	25H	327	327	91	591.5	2.93	2.99	341	335	1.73	1.77
42.4	3.2	CHS	32M	383	337	61	396.5	3.09	3.17	323	316	1.23	1.26
	4	CHS	32H	383	337	61	396.5	3.79	3.86	264	259	1.5	1.53
48.3	3.2	CHS	40M	436	384	61	396.5	3.56	3.64	281	274	1.41	1.44
	4	CHS	40H	436	384	61	396.5	4.37	4.45	229	225	1.73	1.77
60.3	3.6	CHS	50M	422	374	37	240.5	5.03	5.14	199	195	1.21	1.24
	4.5	CHS	50H	422	374	37	240.5	6.19	6.3	161	159	1.49	1.51
76.1	3.6	CHS	65M	533	472	37	240.5	6.44	6.57	155	152	1.55	1.58
	4.5	CHS	65H	533	472	37	240.5	7.95	8.08	126	124	1.91	1.94
88.9	4	CHS	80M	445	397	19	123.5	8.38	8.54	119	117	1.03	1.05
	4.9	CHS	80H	445	397	19	123.5	10.15	10.31	99	97	1.25	1.27
101.6	4	CHS	90M	508	454	19	123.5	9.63	9.81	104	102	1.19	1.21
	4.9	CHS	90H	508	454	19	123.5	11.69	11.87	86	84	1.44	1.47
114.3	4.5	CHS	100M	571	509	19	123.5	12.19	12.39	82	81	1.5	1.53
	5.4	CHS	100H	571	509	19	123.5	14.5	14.71	69	68	1.79	1.82
139.7	5	CHS	125M	699	382	13	84.5	16.61	16.86	60	59	1.4	1.42
	5.4	CHS	125H	699	382	13	84.5	17.89	18.14	56	55	1.51	1.53
165.1	5	CHS	150M	660	451	10	65	19.74	20.04	51	50	1.28	1.3
	5.4	CHS	150H	660	451	10	65	21.27	21.57	47	46	1.38	1.4
Notes: M=Medium H=Heavy
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

WORKING PRESSURES – WELDED JOINTS

Where AS 1074 pipe is used in pressure piping covered by AS 4041, the maximum pressure shall not exceed 1210 kPa for AS 1074 pipe up to and including DN100 and 1030 kPa for AS 1074 pipe exceeding DN100.

SPECIFICATION

C250 Pipe is manufactured and tested to meet the requirement of the following specifications:-

AS 1074 Steel Tubes and Tubulars for ordinary service.
AS 1163 Structural steel and hollow sections.
(Grade C250 and C25L0).

THREADED PIPE

Screwed on one or both ends in accordance with AS 1074. The tapered Whitworth thread used complies with the requirements of AS 1722, Part 1 and is suitable for both parallel and threaded sockets.

END PROCESSING OPTIONS

C250 Pipe is manufactured and tested to meet the requirement of the following specifications:-

Plain End
Shouldered
Roll Grooved
Threaded

Heavy & Medium Pipe to Australian Standards — Mass & Bundling Data

Mass per metre, bundle quantities and packed lengths for medium and heavy grade steel pipe (CHS), calculated in accordance with AS 1163. Use this table to calculate freight weights, bundle sizes and metres-per-tonne for black and galvanised pipe from DN20 to DN150.

Working Pressures - Threaded Joints Taper/Parallel Thread

Type of Service
Nominal Size	Water & Inert Oil		Nominal	Fuel Oil				Other Applications (including Steam & Compressed Air)
DN	Med	Med & Heavy	Size	Medium		Heavy		Medium Press	Temp.	m/tonne	Temp.
DN	Med	Med & Heavy	DN	Press.	Temp.	Press.	Temp.	Medium Press	Temp.	m/tonne	Temp.
mm	kPa	kPa	kPa	kPa	°C	kPa	°C	kPa	°C	kPa	°C
12	2070	2410	140	1030	100	1210	192	1210	100	1210	192
32	1720	2070	140	1030	100	1030	192	1030	100	1030	192
40	1720	2070	140	1030	100	1030	192	1030	100	1030	192
50	1380	1720	140	860	100	860	192	860	100	860	192
65	1380	1720		860	100	860	192	860	100	860	192
80	1380	1720		860	100	860	192	860	100	860	192
100	1030	1380		690	100	860	192	690	100	690	192
125	1030	1380
150	860	1030
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

SUPPLY CONDITIONS

Surface Finish – Black/Painted/Galvanised

Straightness – Refer to Australian Standards

Thickness Tolerence – Refer to Australian Standards

Dimension Tolerence – Refer to Australian Standards

Standard Length – 6.5m

Length Tolerance – + 25mm/-0mm

MECHANICAL PROPERTIES

Minimum Yield Strength – 250MPa

Minimum Tensile Strength – 320MPa

Minimum Elogation in 5.65 √So – 20%

Steel Pipes to American Standard ANSI B36.10

Outside diameter and nominal wall thickness for welded and seamless steel pipe from DN6 to DN1050 (NPS ⅛” to 42”), across schedules 10 through 160 plus Standard, Extra Strong and Double Extra Strong (XXS) weights. Includes the standard formula for calculating approximate pipe mass in kg/m.

Nominal Sizes Shown Are Dn : Si Metric Term Nps : Ansi Term

Nominal Size		Outside Diam	NOMINAL WALL THICKNESS FOR WELDED AND SEAMLESS STEEL PIPE
Nominal Size		Outside Diam	ANSI		B36.10		All dimensions are shown in millimetres
DN	NPS	mm	Std	Extra Strong	XX Strong	Sched	Sched	Sched	Sched	Sched	Sched	Sched	Sched	Sched	Sched
DN	NPS	mm	Std	Extra Strong	XX Strong	10	20	30	40	60	80	100	1120	140	150
6	8-Jan	10.3	1.73	2.41					1.73		2.41
8	4-Jan	13.7	2.24	3.02					2.24		3.02
10	8-Mar	17.1	2.31	3.2					2.31		3.2
15	2-Jan	21.3	2.77	3.73	7.47				2.77		3.73				4.78
20	4-Mar	26.7	2.87	3.91	7.82				2.87		3.91				5.56
25	1	33.4	3.38	4.55	9.09				3.38		4.55				6.35
32	1 1/4	42.2	3.56	4.85	9.7				3.56		4.85				6.35
40	1 1/2	48.3	3.68	5.08	10.15				3.68		5.08				7.14
50	2	60.3	3.91	5.54	11.07				3.91		5.54				8.74
65	2 1/2	73	5.16	7.01	14.02				5.16		7.01				9.53
80	3	88.9	5.49	7.62	15.24				5.49		7.62				11.13
90	3 1/2	101.6	5.74	8.08					5.74		8.08
100	4	114.3	6.02	8.56	17.12				6.02		8.56		11.13		13.49
125	5	141.3	6.55	9.53	19.05				6.55		9.53		12.7		15.88
150	6	168.3	7.11	10.97	21.95				7.11		10.97		14.27		18.26
200	8	219.1	8.18	12.7	22.23		6.35	7.04	8.18	10.31	12.7	15.09	18.26	20.62	23.01
250	10	273.1	9.27	12.7	25.4		6.35	7.8	9.27	XS	15.09	18.26	21.44	XXS	28.58
300	12	323.9	9.53	12.7	25.4		6.35	8.38	10.31	14.27	17.48	21.44	XXS	28.58	33.32
350	14	355.6	9.53	12.7		6.35	7.92	Std.W.T.	11.13	15.09	19.05	23.83	27.79	31.75	35.71
400	16	406.4	9.53	12.7		6.35	7.92	Std.W.T.	XS	16.66	21.44	26.19	30.96	36.53	40.49
450	18	457	9.53	12.7		6.35	7.92	11.13	14.27	19.05	23.83	29.36	34.93	39.67	45.24
500	20	508	9.53	12.7		6.35	Std.W.T	XS	15.09	20.62	26.19	32.54	38.1	44.45	50.01
550	22	559	9.53	12.7		6.35	Std.W.T	XS		22.23	28.58	34.93	41.28	47.63	53.98
600	24	610	9.53	12.7		6.35	Std.W.T	14.27	17.48	24.61	30.96	38.89	46.02	52.37	59.54
650	26	660	9.53	12.7		7.92	XS
700	28	711	9.53	12.7		7.92	XS	15.88
750	30	762	9.53	12.7		7.92	XS	15.88
800	32	813	9.53	12.7		7.92	XS	15.88	17.48
850	34	864	9.53	12.7		7.92	XS	15.88	17.48
900	36	914	9.53	12.7		7.92	XS	15.88	19.05
1050	42	1067	9.53	12.7
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Formula to attain approximate mass in kilograms per metre (kg/m) for Steel Round Pipe and Tubing

m = (D – t) t x 0.02466

Where:

m= mass to the nearest 0.01 kg/m

D = Outside Diameter in millimetres

(To nearest 0.1 mm for OD up to 406.4mm)

(To nearest 1.0mm for OD 457 mm and above)

t = Wall thickness to nearest 0.01 mm

Example

Nominal Size Step 1. 323.9 – 9.53 = 314.37

DN300 NPS12 Step 2. 314.37 x 9.53 =2995.9461

OD = 323.9 mm Step 3. 2995.9461 x 0.024.66

W.T. – 9.53 mm = 73.88 kg/m

Flange Dimension Table — AS2129 & AS4087 (AS Standard, AS High Pressure, Table E)

Outside diameter, pitch circle diameter, bolt hole count and flange thickness for AS Standard Pressure, AS High Pressure, and AS2129 Table E flanges in ductile iron, cast iron and steel, sized from DN50 to DN750. Drilling compatibility is shown against AS4087 Table C/D and Table F/H equivalents.

AS Standard Pressure

FLANGE DIMENSIONS	NOMINAL SIZE	50	65	80	100	125	150	200	225	250	300	350	375	400	450	500	525	600	700	750
AS 4087 & AS 2129 Drilling Compatible with Table C & D AS Standard Pressure	Outside Dia.	150	165	185	215	255	280	335	370	405	455	525	550	580	640	705	735	825	910	995
	Pitch Circle Dia	114	127	146	178	210	235	292	324	356	406	470	495	521	584	641	673	756	845	927
	No. of Holes	4	4	4	4	8	8	8	8	8	12	12	12	12	12	16	16	16	20	20
	Dia. of Holes	18	18	18	18	18	18	18	18	22	22	26	26	26	26	26	26	30	30	33
	Bolt Diameter	16	16	16	16	16	16	16	16	20	20	24	24	24	24	24	24	27	27	30
Flange Thickness
Class 16	Ductile Iron			18	20		23	23	24	24	30		33		33	35		42		47
Class 14	Cast Iron			19	22	22	22	25	25	25	29	32	32	32	35	38	38	41	44	48
Class 14	Steel	11	11	11	11	13	15	19	19	19	23	30	30	30	30	38	41		48
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

AS High Pressure

FLANGE DIMENSIONS	NOMINAL SIZE	50	65	80	100	150	200	225	250	300	350	375	400	450	500	525	600	750
AS 4087 & AS 2129 Drilling Compatible with Table F & H AS Standard Pressure	Outside Dia.	165	185	205	230	305	370	405	430	490	550	580	610	675	735	760	850	1015
	Pitch Circle Dia	127	146	165	191	260	324	356	381	438	495	521	552	610	673	699	781	940
	No. of Holes	4	8	8	8	12	12	12	12	16	16	16	20	20	24	24	24	28
	Dia. of Holes	18	18	18	18	22	22	26	26	26	30	30	30	33	33	33	36	36
	Bolt Diameter	16	16	16	16	20	20	24	24	24	27	27	27	30	30	30	33	33
Flange Thickness
Class 35	Ductile Iron			22	22	27	31	34	34	38		42		46	49		54	59
Class 21	Cast Iron			19	22	25	29	29	32	32	35	35	35	38	41	41	44	51
Class 35	Cast Iron			29	32	35	41	41	44	44	48	51	51	54	57	60	64
Class 21	Steel	15	15	15	19	24	24	30	30	30	30	38	38	38	48	51	58	58
Class 35	Steel	19	19	24	24	31	31	38	38	38	48	48	48	58	58	70	68
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Table E

FLANGE DIMENSIONS	NOMINAL SIZE	50	65	80	100	125	150	200	225	250	300	350	375	400	450	500	525	600	700	750
AS 2129 Table E	Outside Dia.	150	165	185	215	255	280	335	370	405	455	525	550	580	640	705	735	825	910	995
	Pitch Circle Dia	114	127	146	178	210	235	292	324	356	406	470	495	521	584	641	675	756	845	927
	No. of Holes	4	4	4	8	8	8	8	12	12	12	12	12	12	16	16	16	16	20	20
	Dia. of Holes	18	18	18	18	18	22	22	22	22	26	26	26	26	26	26	30	33	33	36
	Bolt Diameter	16	16	16	16	16	20	20	20	20	24	24	24	24	24	24	27	30	30	33
Flange Thickness
Class 14	Cast Iron	19	19	19	22	22	22	25	25	25	29	32	32	32	35	38	38	41	44	48
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Flange Dimension Tables - Ductile Iron - Dimension Table — ISO 7005 PN16, ANSI B16.1 125 lb

Flange dimensions and bolting for ISO 7005 PN16 (drilling-compatible with BS 4504 PN16 and DIN 2533 PN16) and ANSI B16.1 125 lb ductile and cast iron flanges, from DN50 to DN750. Use this table when cross-referencing European PN-rated flanges against American 125 lb class equivalents.

ISO 7005 PN16, ANSI B16.1 125 lb

FLANGE DIMENSIONS	NOMINAL SIZE	50	65	80	100	125	150	175	200	250	300	350	400	450	500	600	700
ISO 7005 PN 16 Drilling Compatible with BS 4504 PN16 & DIN 2533 PN 16	Outside Dia.	165	185	200	220	250	285	315	340	405	460	520	580	640	715	840	910
	Pitch Circle Dia	25	145	160	180	210	240	270	295	355	410	470	525	585	650	770	840
	No. of Holes	4	4	8	8	8	8	8	12	12	12	16	16	20	20	20	24
	Dia. of Holes	18	18	18	18	18	22	22	22	27	27	27	30	30	33	36	36
	Bolt Diameter	16	16	16	16	16	20	20	20	24	24	24	27	27	30	33	33
Flange Thickness
Class 16	Ductile Iron	19	19	19	19	19	19		20	22	25	27	28	30	32	36	40
Class 16	Cast Iron	20	20	22	24	26	26		30	32	32	36	38	40	42	48	54
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

ANSI B16.1 125 lb

FLANGE DIMENSIONS	NOMINAL SIZE	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	750
ANSI B16.1 125 lb Drilling Compatible with ANSI B16.1 150 lb	Outside Dia.	152	178	191	229	255	280	343	405	483	533	597	635	699	813		984
	Pitch Circle Dia	121	140	152	191	216	241	298	362	432	476	540	578	635	749		914
	No. of Holes	4	4	4	8	8	8	8	12	12	12	16	16	20	20		28
	Dia. of Holes	19	19	19	19	22	22	22	25	25	29	29	32	32	35		35
	Bolt Diameter	16	16	16	16	20	20	20	22	22	25	25	29	29	32	32
Flange Thickness
Class 17	Ductile Iron	16	18	2	20	24	25	29	26	32	35	37	40	48	48		54
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Flange Dimensional Tables - Ductile Iron — AS4087 Table C, E & F + Bolt Sizing

Flange diameter, thickness, bolt circle diameter, bolt count and bolt size for AS4087 Standard Pressure (Table C/E, 1.6 MPa) and High Pressure (Table F, 3.5 MPa) ductile iron flanges. Use this table to select the correct bolt size directly against nominal flange size and pressure class.

Standard Pressure Flange (AS 4087) - Table C or E drilling - maximum working pressure 1.6 Mpa.

Nominal Size	Flange Diameter	Flange Thickness	Table C			Table E
	A	T	Bolt Circle Dia. P	Number of Bolts	Bolt Size	Bolt Circle Dia. P	Number of Bolts	Bolt Size
80	185	18	146	4	M16 x 65	146	4	M16 x 65
100	215	20	178	4	M16 x 75	178	8	M16 x 75
150	280	23	235	8	M16 x 75	235	8	M20 x 75
200	335	23	292	8	M16 x 75	292	8	M20 x 75
225	370	24	324	8	M16 x 75	324	12	M20 x 75
250	405	24	356	8	M20 x 90	356	12	M20 x 90
300	455	30	406	12	M20 x 100	406	12	M24 x 100
375	550	33	495	12	M24 x 100	495	12	M24 x 100
450	640	33	584	12	M24 x 120	584	16	M24 x 120
500	705	35	641	16	M24 x 120	641	16	M24 x 120
600	825	42	756	16	M27 x 130	756	16	M30 x 140
750	995	47	927	20	M30 x 140	927	20	M33 x 140
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

High Pressure Flange (AS 4087)
- Table F drilling - maximum working pressure 3.5 Mpa.

Nominal Size	Flange Diameter	Flange Thickness	Table F
	A	T	Bolt Circle Dia. P	Number of Bolts	Bolt Size
80	205	22	165	8	M16 x 75
100	230	22	191	8	M16 x 75
150	305	27	260	12	M20 x 90
200	370	31	324	12	M20x100
225	405	34	356	12	M24 x 120
250	430	34	381	12	M24 x 120
300	490	38	438	16	M24 x 120
375	580	42	521	16	M27 x 130
450	675	46	610	20	M30 x 140
500	735	49	673	24	M30 x 140
600	850	54	781	24	M33 x 160
750	1015	59	940	28	M33 x 160
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Bolt & Stud Dimensions for American Standard Flanges

Bolt quantity, diameter and length (stud and machine bolt) for ANSI B16.5 (BS 1560) flanges from 15mm to 900mm, across pressure Class 150 to Class 2500. Includes metric-to-imperial bolt size conversions and guidance on U.N.C. vs 8 U.N. threading by bolt diameter.

To suit Flange Sizes 15mm to 600mm to ANSI B16.5 (BS.1560) and sizes 750mm & 900mm to BS.3293

Nominal Sizes Shown are SAA Metric (mm) & ANSI (ins) Nominal Size

Nominal Flange Size		Class 150				Class 300				Class 600			Class 900			Class 1500			Class 2500			Nominal Flange Size
				L	L			L	L			L			L			L			L
		No. Bolts	Dia Bolts	Stud Bolts	Mach Bolts	No. Bolts	Dia Bolts	Stud Bolts	Mach Bolts	No. Bolts	Dia Bolts	Stud Bolts	No. Bolts	Dia Bolts	Stud Bolts	No. Bolts	Dia Bolts	Stud Bolts	No. Bolts	Dia Bolts	Stud Bolts
mm	inch		inch	mm	mm		inch	mm	mm		inch	mm		inch	mm		inch	mm		inch	mm	mm	inch
15	½	4	½	60	45	4	½	65	55	4	½	80	Use Class 1500 dimensions in these sizes			4	¾	105	4	¾	125	15	½
20	¾	4	½	65	50	4	⁵⁄₈	75	60	4	⁵⁄₈	90				4	¾	115	4	¾	125	20	¾
25	1	4	½	65	55	4	⁵⁄₈	80	65	4	⁵⁄₈	90				4	⁷⁄₈	125	4	⁷⁄₈	140	25	1
32	1¼	4	½	70	55	4	⁵⁄₈	80	65	4	⁵⁄₈	100				4	⁷⁄₈	4	4	1	150	32	1¼
40	1½	4	½	70	60	4	⁵⁄₈	90	75	4	⁵⁄₈	105				4	1	140	4	1¹⁄₈	170	40	1½
50	2	4	⁵⁄₈	80	65	8	⁵⁄₈	90	75	8	¾	105				8	⁷⁄₈	24	8	1	175	50	2
65	2½	4	⁵⁄₈	90	75	8	¾	100	85	8	¾	120				8	1	160	8	1¹⁄₈	195	65	2½
80	3	4	⁵⁄₈	90	75	8	¾	110	90	8	¾	125	8	⁷⁄₈	145	8	1¹⁄₈	28	8	1¼	220	80	3
90	3½	8	⁵⁄₈	90	75	8	¾	110	95	8	⁷⁄₈	140										90	3½
100	4	8	⁵⁄₈	90	75	8	¾	110	95	8	⁷⁄₈	145	8	1¹⁄₈	170	8	1¼	195	8	1½	255	100	4
125	5	8	¾	90	80	8	¾	120	100	8	1	165	8	1¼	190	8	1½	250	8	1¾	300	125	5
150	6	8	¾	100	85	12	¾	125	105	12	1	170	12	1¹⁄₈	195	12	1³⁄₈	260	8	2	345	150	6
200	8	8	¾	110	90	12	⁷⁄₈	140	110	12	1¹⁄₈	195	12	1³⁄₈	220	12	1⁵⁄₈	290	12	2	380	200	8
250	10	12	⁷⁄₈	115	95	16	1	155	130	16	1¼	215	16	1³⁄₈	235	12	1⁷⁄₈	335	12	2½	485	250	10
300	12	12	⁷⁄₈	120	100	16	1¹⁄₈	170	145	20	1¼	220	20	1³⁄₈	255	16	2	375	12	2¾	540	300	12
350	14	12	1	130	110	20	1¹⁄₈	175	150	20	1³⁄₈	235	20	1½	275	16	2¼	405				350	14
400	16	16	1	135	115	20	1¼	190	160	20	1½	255	20	1⁵⁄₈	285	16	2½	445				400	16
450	18	16	1¹⁄₈	150	125	24	1¼	195	170	20	1⁵⁄₈	275	20	1⁷⁄₈	325	16	2¾	495				450	18
500	20	20	1¹⁄₈	160	135	24	1¼	205	180	24	1⁵⁄₈	290	20	2	345	16	3	540				500	20
600	24	20	1¼	175	145	24	1½	230	195	24	1⁷⁄₈	330	20	2½	435	16	3½	615				600	24
750	30	28	1¼	190	160	28	1¾	290	250	28	2	355	CLASS 900, 1500 & 2500 - Not listed in BS. 3293									750	30
900	36	32	1½	215	180	32	2	325	280	28	2½	400	CLASS 900, 1500 & 2500 - Not listed in BS. 3293									900	36

® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

NOTE: Raised face height of 1.6mm for Class 150 and 300 and 6.4mm for Class 600, 900, 1500 and 2500 is included in dimension L (Bolt Length)

Stud Bolt with Nuts

Machine Bolt with Nut

DIAMETER OF BOLTS

– is shown in inches. For nominal diameters 1 inch and smaller, threads are U.N.C., nominal diameters 1-1/8 inch and larger threads are 8 U.N. (8 T.P.I.)

LENGTH OF BOLTS

– is shown in millimeters rounded to the nearest 5 mm. *Stud Bolt lengths (L) do not include the height of point. Machine Bolt lengths (L) include the height of point.

The length shown includes the height
of the Raised Face in all cases.

American Standard Flanges — Temperature / Pressure Ratings

Maximum working pressure (kPa) by temperature for carbon steel flanges to ANSI B16.5, across Class 150 through 2500 — covering forgings to ASTM A105, A350-LF2 and A181 Grade 11. Use this table to confirm a flange’s safe operating pressure at your system’s service temperature.

Carbon Steel Pipe Flanges to ANSI B16.5 (BS1560)
Forgings to ASTM A105 - Prolonged use above 427 deg C is not recommended
Forgings to ASTM A350 - LF2 - Not for use above 343 deg C
Forgings to ASTM A181 Grade 11 for Class 150 & 300 only

TEMPERATURE / PRESSURE RATINGS

TEMPERATURE °C	MAXIMUM WORKING PRESSURE IN kPa BY CLASSES (For the approximate P.S.I. divide by 7)
	PN 20 150	PN 50 300	PN 100 600	PN 150 900	PN 250 1500	PN 420 2500
-29 to 38	1960	5110	10210	15320	25530	42550
50	1920	5010	10020	15020	25040	41730
100	1770	4640	9280	13910	23190	38650
150	1580	4520	9050	13570	22610	37690
200	1400	4380	8760	13150	21910	36520
250	1210	4170	8340	12520	20860	34770
300	1020	3870	7750	11620	19370	32280
350	840	3700	7390	11090	18480	30800
375	740	3650	7290	10940	18230	30390
400	650	3450	6900	10350	17250	28750
425	560	2880	5750	8630	14380	23960
450	470	2000	4010	6010	10020	16690
475	370	1350	2710	4060	6770	11290
500	280	880	1760	2640	4400	7330
525	190	520	1040	1550	2590	4320
540	130	330	650	980	1630	2720
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Flanges above 600NPS are not included in ANSI B16.5 and the Class designations in these large diameters DO NOT IMPLY specific temperature / pressure ratings.

Inch/Metric Bolting interchangeable for A.N.S.I. B16.5 flanges as below
FOR	USE
½	M14
⁵⁄₈	M18
¾	M20
⁷⁄₈	M24
1”	M27
1¹⁄₈	M30
1¼	M33
1 ³⁄₈	M36
1½	M39
1 ⁵⁄₈	M42
1¾	M45
1 ⁷⁄₈	M48
2”	M52
2¼	M56
2½	M64
2¾	M72
® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Conversion Factors — Length, Weight, Sq Measurements, Length Equivalents, Fluid Eqivalents, Temperature, Water Catchment Volume.

Quick-reference conversion tables for weight (lbs, kg, tonnes, stone), length (mm to inches, feet, yards, miles), temperature (Celsius to Fahrenheit), square measurements (acres, hectares, square metres), water catchment volume, length equivalents (chains, furlongs, fathoms) and fluid equivalents (gallons, quarts, pints). Includes the standard formula for calculating pipe flow velocity from flow rate and pipe area.

Weight

lbs	oz	gms	Kg	Ton	Tonne	cwt	Stone
1	16	453.6	0.4536	0.0004464	0.0004535	0.008929	0.07143
0.625	1	28.35	0.02836	..	..	..	..
0.0022	0.03527	1	0.001	..	..	..	..
2.205	35.274	1000	1	0.000984	0.001	..	..
2240	35 840	1 016 064	1 016	1	1.016	20	160
2204.6	35 274	1 000 000	1000	0.9842	1	19.684	157.47
112	1792	50 803	50.8	0.05	0.0508	1	..
14	224	6350	6.35	0.00625	0.0064	0.125	1

Length

mm	cms	Metre	Km	Inch	Foot	Yard	Mile
1	0.1	0.001	..	0.0394	0.0033	..	..
10	1	0.01	..	0.3937	0.0328	0.01093	..
1000	100	1	0.001	39.37	3.2808	1.0936	..
1 000 000	10 000	1000	1	39 370	3280.8	1093.6	0.6214
1 609 300	160 930	1609.3	1.6093	63 360	5280	1760	1
304.8	30.48	0.3048	0.0003048	12	1	0.333	..
25.4	2.54	0.0254	..	1	0.0833	0.02778	..
914.4	91.44	0.9144	..	36	3	1	..

Temperature

Centigrade =	(F-32) x 5/9
Fahrenheit =	(C x 9/5 + 32)
Water Boils at	100ºC, or 212ºF
Water Freezes at	0ºC, or 32ºF

Square Measurements

1 Sq Mile	640 acres	259 hectares	2.59 Sq Km
1 Sq Km	247 acres	100 hectares
1 Acre	4840 Sq yds	43,560 Sq ft	0.4047 hectares
1 Hectare	10,000 Sq m	2.471 acres	107,640 sq ft
1 Sq Metre	10.764 Sq ft
10 Sq Feet	0.929 Sq m

Water Catchment Volume

Sq Metre x 1mm =	1 Litre
Sq Foot x 1 inch =	0.52 Gallon

Length Equivalents

1 league	3 miles	24 furlongs	960 poles
1 mile	8 furlongs	320 poles	5280 feet
1 furlong	40 poles	660 feet	1000 links
1 chain	4 poles	66 feet	100 links
1 fathom	6 feet	9.091 links

Velocity of Flow

Velocity in meters/second =1000 × flow in l/s²area of pipe in mm

Fluid Eqivalents

1 gallon	4 quarts	10lbs of water
1 quart	2 pints	2.5lbs of water
1 pint	4 gills	1.25lbs of water
1 gill	5 ozs

® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Conversion Factors — Pressure & Liquid Head, Flow, Volume, Force, Torque

Engineering conversion tables covering pressure and liquid head (psi, bar, metres of water, kg/cm²), flow rate (litres, gallons and cubic metres per minute/hour), volume (litres, US and imperial gallons, cubic metres, acre feet), force (Newtons, kgf, lbf) and torque (Nm, kgf·m, lbf·ft). Use these tables to convert between metric and imperial units for pipeline flow, pump and pressure calculations.

Pressure and Liquid Head

psi	Foot of Water	Kilogram per cm²	Atmosphere or Bar	Metre of Water	Foot
1	2.31	6.895	0.0703	0.068	0.704
0.433	1	2.986	0.0305	0.03	0.305
0.145	0.335	1	0.0102	0.01	0.102
14.233	32.85	98.09	1	0.98	10
14.5	33.5	100	1.02	1	10.21
1.42	3.281	9.797	0.1	0.098	1
0.019	0.044	0.131	0.0014	0.0013	0.014
0.491	1.134	3.377	0.034	0.0339	0.345

Volume

mp.Gallons	Litres	US Gallons	Cubic Feet	Lbs Water	Cubic Metre	Acre Feet	Cubic Inch
1	4.546	1.2	0.1605	10	0.00455		277.34
0.22	1	0.264	0.0353	2.2	0.001		61.02
0.833	3.785	1	0.1337	8.333	0.00379		231.06
6.23	28,317	7.48	1	62.3	0.02832		1728
0.1	0.4546	0.12	0.0161	1	0.00046		27.82
220	1000	264	35.32	2200	1	0.00081	61.032
271,378		325,828	43,560	2,713,788	1234	1

Flow

Gallons per Minute	Gallons per Hour	Litres per Second	Litres per Minute	US Gallons per Minute	Cubic Metre per Hour	Cubic Metre per Minute	Cubic Feet per Minute
1	60	0.076	4.546	1.2	0.2728	0.00455	0.1605
0.01667	1	0.00127	0.07578	0.02	0.004547	0.00268
13.2	792	1	60	15.84	3.6	0.06	2.119
0.22	13.2	0.0167	1	0.264	0.06	0.001	0.0353
0.833	50	0.063	3.787	1	0.0038	0.1337
3.666	220	0.278	16.667	4.4	1	0.0167	0.5886
220	13200	16.68	1000	264	60	1	35.31
6.23	373.8	0.472	28.32	7.48	1.699	0.0283	1

Torque

Newton Metre Nm	Kilogramme Force Metre kgf m	Pound Force Foot lbf ft	Pound Force Foot lbf in
1	0.102.0	0.737.6	8.850.8
9.806 65	1	7.233 0	86.795 7
1.355 8	0.138 3	1	12
0.113 0	0.011 52	0.083 3	1

Force

Newton N	Kg Force kgf	Pound Force lbf	Poundal pdl
1	0.102 0	0.224 8	7.233 0
9.806 7	1	2.204 6	70.931 6
4.448 2	0.453 6	1	32.174 1
0.138 3	0.014 1	0.031 1	1

® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Mass Conversion Chart

A pound-to-kilogram conversion table for quickly converting given mass values from 1 to 1500, using the standard factor of 1 lb = 0.4536 kg. Useful for converting pipe, flange and fitting weights between imperial and metric units without recalculating manually.

The mass of an object is the quanitiy of matter it contains and is constant irrespective of the location or altitude. The weight of that object is the force exerted on it by gravity and thus varies from place to
place and according to height above sea level or the distance from the Earth’s centre.

A. To Use, locate “given mass” in the “given mass” column – whether lbs. or kg.
B. If the “given mass’ is in pounds (lbs0, read kilograms (kg) in the right hand column. eg. Given mass 70lbs = 31.75kg

Conversion Factors:-
1 pound (lb) x 0.4536 = kilograms (kg)
1 kilogram (kg) x 2.2046 = pound (lbs)

Mass Conversion Chart

1 to 65			66 to 130			131 to 375			380 to 700			750 to 1500
lbs	Given Mass	kg	lbs	Given Mass	kg	lbs	Given Mass	kg	lbs	Given Mass	kg	lbs	Given Mass	kg
2.2	1	0.45	145.5	66	29.94	288.8	131	59.42	838	380	172.37	1554	705	319.79
4.41	2	0.91	147.71	67	30.39	291.01	132	59.88	849	385	174.64	1565	710	322.06
6.61	3	1.36	149.91	68	30.84	293.21	133	60.33	860	390	176.9	1576	715	324.32
8.82	4	1.81	152.12	69	31.3	295.42	134	60.78	871	395	179.17	1587	720	326.59
11.02	5	2.27	154.32	70	31.75	297.62	135	61.24	882	400	181.44	1598	725	328.86
13.23	6	2.72	156.53	71	32.21	299.83	136	61.69	893	405	183.71	1609	730	331.13
15.43	7	3.18	158.73	72	32.66	302.03	137	62.14	904	410	185.98	1620	735
17.64	8	3.63	160.94	73	33.11	304.24	138	62.6	915	415	188.24	1631	740	335.66
19.84	9	4.08	163.35	74	33.57	306.44	139	63.05	926	420	190.51	1642	745	337.93
22.05	10	4.54	165.35	75	34.02	308.64	140	63.5	937	425	192.78	1653	750	340.2
24.25	11	4.99	167.55	76	34.47	310.85	141	63.96	948	430	195.05	1664	755	342.47
26.46	12	5.44	169.75	77	34.93	313.05	142	64.41	959	435	197.32	1676	760	344.74
28.66	13	5.9	171.96	78	35.38	315.26	143	64.87	970	440	199.58	1687	765	347
30.86	14	6.35	174.16	79	35.83	317.46	144	65.32	981	445	201.85	1698	770	349.27
33.07	15	6.8	176.37	80	36.29	319.67	145	65.77	992	450	204.12	1709	775	351.54
35.27	16	7.26	178.57	81	36.74	321.87	146	66.23	1003	455	206.39	1720	780	353.81
37.48	17	7.71	180.78	82	37.2	324.08	147	66.68	1014	460	208.66	1731	785	356.08
39.68	18	8.16	182.98	83	37.65	326.28	148	67.13	1025	465	210.92	1742	790	358.34
41.89	19	8.62	185.19	84	38.1	328.49	149	67.59	1036	470	213.19	1753	795	360.61
44.09	20	9.07	187.39	85	38.56	330.69	150	68.04	1047	475	215.46	1764	800	362.88
46.3	21	9.53	189.6	86	39.01	341.71	155	70.31	1058	480	217.73	1775	805	365.15
48.5	22	9.98	191.8	87	39.46	352.74	160	72.58	1069	485	220	1786	810	367.42
50.71	23	10.43	194	88	39.92	363.76	165	74.84	1080	490	222.26	1797	815	369.68
52.91	24	10.89	196.21	89	40.37	374.78	170	77.11	1091	495	224.53	1808	820	371.95
55.12	25	11.34	198.41	90	40.82	385.8	175	79.38	1102	500	226.8	1819	825	374.22
57.32	26	11.79	200.62	91	41.28	396.83	180	81.65	1113	505	229.07	1830	830	376.49
59.52	27	12.25	202.82	92	41.73	407.85	185	83.92	1124	510	231.34	1841	835	378.76
61.73	28	12.7	205.03	93	42.18	418.87	190	86.18	1135	515	233.6	1852	840	381.02
63.93	29	13.15	207.23	94	42.64	429.9	195	88.45	1146	520	235.87	1863	845	383.29
66.14	30	13.61	209.44	95	43.09	440.92	200	90.72	1157	525	238.14	1874	850	385.56
68.34	31	14.06	211.64	96	43.55	451.94	205	92.99	1168	530	240.41	1885	855	387.83
70.55	32	14.52	213.85	97	44	462.97	210	95.26	1179	535	242.68	1896	860	390.1
72.75	33	14.97	216.05	98	44.45	473.99	215	97.52	1190	540	244.94	1907	865	392.36
74.96	34	15.42	218.26	99	44.91	485.01	220	99.79	1202	545	247.21	1918	870	394.63
77.16	35	15.88	220.46	100	45.36	496.04	225	102.06	1213	550	249.48	1929	875	396.9
79.37	36	16.33	222.67	101	45.81	507.06	230	104.33	1224	555	251.75	1940	880	399.17
81.57	37	16.78	224.87	102	46.28	518.08	235	106.6	1235	560	254.02	1951	885	401.44
83.77	38	17.24	227.07	103	46.72	529.1	240	108.86	1246	565	256.28	1962	890	403.7
85.98	39	17.69	229.28	104	47.17	540.13	245	111.13	1257	570	258.55	1973	895	405.97
88.18	40	18.14	231.48	105	47.63	551.15	250	113.4	1268	575	260.82	1984	900	408.24
90.39	41	18.6	233.69	106	48.08	562.17	255	115.67	1279	580	263.09	1995	905	410.51
92.59	42	19.05	235.89	107	48.54	573.2	260	117.94	1290	585	265.36	2006	910	412.78
94.8	43	19.5	238.1	108	48.99	584.22	265	120.2	1301	590	267.62	2017	915	415.04
97	44	19.96	240.3	109	49.44	595.24	270	122.47	1312	595	269.89	2028	920	417.31
99.21	45	20.41	242.51	110	49.9	606.27	275	124.74	1323	600	272.16	2039	925	419.58
101.41	46	20.87	244.71	111	50.35	617.3	280	127.01	1334	605	274.43	2050	930	421.85
103.62	47	21.32	246.92	112	50.8	628.31	285	129.28	1345	610	276.7	2061	935	424.12
105.82	48	21.77	249.12	113	51.26	639.33	290	131.54	1356	615	278.96	2072	940	426.38
108.03	49	22.23	251.32	114	51.71	650.36	295	133.81	1367	620	281.23	2083	945	428.65
110.23	50	22.68	253.53	115	52.16	661.38	300	136.08	1378	625	283.5	2094	950	430.92
112.43	51	23.13	255.73	116	52.62	672.4	305	138.35	1389	630	285.77	2105	955	433.19
114.64	52	23.59	257.94	117	53.07	683.43	310	140.62	1400	635	288.04	2116	960	435.46
116.84	53	24.04	260.14	118	53.53	694.45	315	142.88	1411	640	290.3	2127	965	437.72
119.05	54	24.49	262.35	119	53.98	705.47	320	145.15	1422	645	292.57	2138	970	439.99
121.25	55	24.95	264.55	120	54.43	716.5	325	147.42	1433	650	294.84	2149	975	442.26
123.46	56	25.4	266.76	121	54.89	727.52	330	149.69	1444	655	297.11	2161	980	444.53
125.66	57	25.86	268.96	122	55.34	738.54	335	151.96	1455	660	299.38	2172	985	446.8
127.87	58	26.31	271.17	123	55.79	749.56	340	154.22	1466	665	301.64	2183	990	449.06
130.07	59	26.76	273.37	124	56.25	760.59	345	156.49	1477	670	303.91	2194	995	451.33
132.28	60	27.22	275.58	125	56.7	771.61	350	158.76	1488	675	306.18	2205	1000	453.6
134.48	61	27.67	277.78	126	57.15	782.62	355	161.03	1499	680	308.45	2425	1100	498.96
136.69	62	28.12	279.98	127	57.61	793.66	360	163.3	1510	685	310.72	2646	1200	544.32
138.89	63	28.58	282.19	128	58.06	804.68	365	165.56	1521	690	312.98	2866	1300	589.68
141.09	64	29.03	284.39	129	58.51	815.7	370	167.83	1532	695	315.25	3086	1400	635.04
143.3	65	29.48	286.6	130	58.97	826.73	375	170.1	1543	700	317.52	3307	1500	680.4

® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

Temperature Conversion Chart

Look up Celsius-to-Fahrenheit conversions across the full working range, from -196°C (-320°F) up to 1316°C (2400°F). Find your known value in the “Given Mass” column, then read the converted figure on either side — a fast way to cross-check flange, pipe or material temperature limits when specifications are given in a different unit than your own.

Conversion Factors

Degrees – Celsius to Fahrenheit

(°C × ⁹⁄₅) + 32 = °F

Degrees – Fahrenheit to Celsius

(°F x -32) + ⁵⁄₉ = °C

How to use the Conversion Chart

(A) Locate “Given Temperature” in the “Given Temperature” Column whether ºC or ºF.
(B) If “given temperature” is in degrees Celsius (ºC) read degrees Fahrenheit (ºF)
in right hand column.
(C) If “given temperature” is in degrees Fahrenheit (ºF) read degrees Celsius (ºC)
in left hand column.
(D) Example: a. Given temperature is 35ºC= 95ºF from right hand column
b. Given temperature is 35ºF= 1.7ºC from left hand column

Temperature Conversion Chart

- 320 to 27			28 to 77			78 to 235			240 to 485			490 to 2400
ºC	Given Mass	ºF	ºC	Given Mass	ºF	ºC	Given Mass	ºF	ºC	Given Mass	ºF	ºC	Given Mass	ºF
-196	-320		-2.2	28	82.4	25.6	78	172.4	116	240	464	254	490	914
-184	-300		-1.7	29	84.2	26.1	79	174.2	118	245	473	257	495	923
-173	-280		-1.1	30	86	26.7	80	176	121	250	482	260	500	932
-162	-260	-436	-0.6	31	87.8	27.2	81	177.8	124	255	491	266	510	950
-151	-240	-400	0	32	89.6	27.8	82	179.6	127	260	500	271	520	968
-140	-220	-364	0.6	33	91.4	28.3	83	181.4	129	265	509	277	530	986
-129	-200	-328	1.1	34	93.2	28.9	84	183.2	132	270	518	282	540	1004
-115	-175	-283	1.7	35	95	29.4	85	185	135	275	527	288	550	1022
-101	-150	-238	2.2	36	96.8	30	86	186.8	138	280	536	293	560	1040
-90	-130	-202	2.8	37	98.6	30.6	87	188.6	141	285	545	299	570	1058
-84	-120	-184	3.3	38	100.4	31.1	88	190.4	143	290	554	304	580	1076
-79	-110	-166	3.9	39	102.2	31.7	89	192.2	146	295	563	310	590	1094
-73	-100	-148	4.4	40	104	32.2	90	194	149	300	572	316	600	1112
-68	-90	-130	5	41	105.8	32.8	91	195.8	152	305	581	321	610	1130
-62	-80	-112	5.6	42	107.6	33.3	92	197.6	154	310	590	327	620	1148
-57	-70	-94	6.1	43	109.4	33.9	93	199.4	157	315	599	332	630	1166
-51	-60	-76	6.7	44	111.2	34.4	94	201.2	160	320	608	338	640	1184
-46	-50	-58	7.2	45	113	35	95	203	163	325	617	343	650	1202
-40	-40	-40	7.8	46	114.8	35.6	96	204.8	166	330	626	349	660	1220
-34	-30	-22	8.3	47	116.6	36.1	97	206.6	168	335	635	354	670	1238
-29	-20	-4	8.9	48	118.4	36.7	98	208.4	171	340	644	360	680	1256
-23	-10	14	9.4	49	120.2	37.2	99	210.2	174	345	653	366	690	1274
-17.8	0	32	10	50	122	37.8	100	212	177	350	662	371	700	1292
-17.2	1	33.8	10.6	51	123.8	41	105	221	179	355	671	377	710	1310
-16.7	2	35.6	11.1	52	125.6	43	110	230	182	360	680	382	720	1328
-16.1	3	37.4	11.7	53	127.4	46	115	239	185	365	689	388	730	1346
-15.6	4	39.2	12.2	54	129.2	49	120	248	188	370	698	393	740	1364
-15	5	41	12.8	55	131	52	125	257	191	375	707	399	750	1382
-14.4	6	42.8	13.3	56	132.8	54	130	266	193	380	716	404	760	1400
-13.9	7	44.6	13.9	57	134.6	57	135	275	196	385	725	410	770	1418
-13.3	8	46.4	14.4	58	136.4	60	140	284	199	390	734	416	780	1436
-12.8	9	48.2	15	59	138.2	63	145	293	202	395	743	421	790	1454
-12.2	10	50	15.6	60	140	66	150	302	204	400	752	427	800	1472
-11.7	11	51.8	16.1	61	141.8	68	155	311	207	405	761	432	810	1490
-11.1	12	53.6	16.7	62	143.6	71	160	320	210	410	770	438	820	1508
-10.6	13	55.4	17.2	63	145.4	74	165	329	213	415	779	443	830	1526
-10	14	57.2	17.8	64	147.2	77	170	338	216	420	788	454	850	1562
-9.4	15	59	18.3	65	149	79	175	347	218	425	797	468	875	1607
-8.9	16	60.8	18.9	66	150.8	82	180	356	221	430	806	482	900	1652
-8.3	17	62.6	19.4	67	152.6	85	185	365	224	435	815	510	950	1742
-7.8	18	64.4	20	68	154.4	88	190	374	227	440	824	538	1000	1832
-7.2	19	66.2	20.6	69	156.2	91	195	383	229	445	833	566	1050	1922
-6.7	20	68	21.1	70	158	93	200	392	232	450	842	593	1100	2012
-6.1	21	69.8	21.7	71	159.8	96	205	401	235	455	851	621	1150	2102
-5.6	22	71.6	22.2	72	161.6	99	210	410	238	460	860	649	1200	2192
-5	23	73.4	22.8	73	163.4	102	215	419	241	465	869	704	1300	2372
-4.4	24	75.2	23.3	74	165.2	104	220	428	243	470	878	760	1400	2552
-3.9	25	77	23.9	75	167	107	225	437	246	475	887	816	1500	2732
-3.3	26	78.8	24.4	76	168.8	110	230	446	249	480	896	1093	2000	3632
-2.8	27	80.6	25	77	170.6	113	235	455	252	485	905	1316	2400	4352

® Copyright by Derwent Industries Pty Ltd Derwent Industries reserves the right to change product designs and specifications without notice. E & O.E

FAQ

What is the difference between AS2129 and AS4087 flanges?

AS2129 is the older Australian flange standard, still in use for Table D, E, F and H flanges. AS4087 is the updated standard covering the same drilling patterns but using PN (nominal pressure) ratings — PN16, PN21 and PN35 — instead of the older table letters. Table D and PN16, Table F and PN21, and Table H and PN35 share the same drilling and are generally interchangeable.

What pipe sizing standards does Derwent Pipelines cover?

Derwent’s pipe sizing charts cover pressure and non-pressure pipe across Australian standards including AS1074 (steel), AS1477 (uPVC), AS1711/AS1712 (asbestos cement), AS1163 (structural steel hollow sections), AS4058 (reinforced concrete), and AS4130 (polyethylene), as well as ANSI B36.10 for American steel pipe sizing.

What is ANSI B16.5 and which flange classes does it cover?

NSI B16.5 (also referenced as BS1560) is the American standard for steel pipe flanges and fittings from NPS ½” to 24”. It defines flange dimensions and bolting for pressure classes 150, 300, 600, 900, 1500 and 2500, along with corresponding temperature/pressure ratings for carbon steel flanges.

How do I find the correct bolt size for an ANSI flange?

Bolt size depends on the flange’s nominal size and pressure class. Derwent’s bolt & stud dimension chart lists the number of bolts, bolt diameter, and stud or machine bolt length for ANSI B16.5 (BS1560) flanges from 15mm to 900mm, across Class 150 through Class 2500.

What is the maximum working pressure for a Class 150 carbon steel flange?

For carbon steel flanges to ANSI B16.5, a Class 150 (PN20) flange is rated to approximately 1960 kPa at ambient temperature (-29°C to 38°C), dropping as operating temperature increases — down to around 130 kPa at 540°C. Exact ratings vary by flange class and temperature; see Derwent’s full temperature/pressure rating table for all classes.

What’s the difference between AS2129 Table E and AS4087 PN14?

AS2129 Table E drilling is not formally adopted into AS4087, but it shares the same pressure rating as PN14 and uses the same drilling pattern as AS4087 PN14/PN16 in most sizes up to 600NB — with exceptions at 100NB, 250NB and 450NB.

How do I calculate steel pipe weight per metre?

Approximate mass in kg/m is calculated using the formula m = (D − t) × t × 0.02466, where D is the outside diameter in mm and t is the wall thickness in mm. Derwent’s ANSI B36.10 pipe chart includes a worked example for this calculation.

What flange standard is most common in Australia?

For general industrial, commercial, and water/wastewater applications, AS2129 table flanging remains the most widely used in Australia. ANSI flanging to ANSI B16.5 is now the more common choice in oil, gas, and mining applications. European PN-rated flanges to AS4331 or EN 1092-1 are also increasingly specified.

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Flow Control Technical Charts

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Pressure Pipe Sizing Chart

Non-Pressure Pipe Sizing Chart

Working Pressures - Welded Joints

WORKING PRESSURES – WELDED JOINTS

SPECIFICATION

THREADED PIPE

END PROCESSING OPTIONS

Working Pressures - Threaded Joints Taper/Parallel Thread

SUPPLY CONDITIONS

MECHANICAL PROPERTIES

Nominal Sizes Shown Are Dn : Si Metric Term Nps : Ansi Term

Formula to attain approximate mass in kilograms per metre (kg/m) for Steel Round Pipe and Tubing

AS Standard Pressure

AS High Pressure

Table E

ISO 7005 PN16, ANSI B16.1 125 lb

ANSI B16.1 125 lb

Standard Pressure Flange (AS 4087) - Table C or E drilling - maximum working pressure 1.6 Mpa.

High Pressure Flange (AS 4087) - Table F drilling - maximum working pressure 3.5 Mpa.

To suit Flange Sizes 15mm to 600mm to ANSI B16.5 (BS.1560) and sizes 750mm & 900mm to BS.3293

Nominal Sizes Shown are SAA Metric (mm) & ANSI (ins) Nominal Size

Stud Bolt with Nuts

Machine Bolt with Nut

DIAMETER OF BOLTS

LENGTH OF BOLTS

Carbon Steel Pipe Flanges to ANSI B16.5 (BS1560) Forgings to ASTM A105 - Prolonged use above 427 deg C is not recommended Forgings to ASTM A350 - LF2 - Not for use above 343 deg C Forgings to ASTM A181 Grade 11 for Class 150 & 300 only

TEMPERATURE / PRESSURE RATINGS

Weight

Length

Temperature

Square Measurements

Water Catchment Volume

Length Equivalents

Velocity of Flow

Fluid Eqivalents

Pressure and Liquid Head

Volume

Flow

Torque

Force

Mass Conversion Chart

Conversion Factors

How to use the Conversion Chart

Temperature Conversion Chart

FAQ

High Pressure Flange (AS 4087)
- Table F drilling - maximum working pressure 3.5 Mpa.

Carbon Steel Pipe Flanges to ANSI B16.5 (BS1560)
Forgings to ASTM A105 - Prolonged use above 427 deg C is not recommended
Forgings to ASTM A350 - LF2 - Not for use above 343 deg C
Forgings to ASTM A181 Grade 11 for Class 150 & 300 only