Pipe Standards

IS 1239 (Part 1) : 1990 — Mild Steel Tubes

Specifications for Mild Steel Tubes and Tubulars

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NB mm	NB inches	Class	Outside Diameter		Thickness mm	SWG	MS Black Pipes P/E		Galvanized Pipes S&S
NB mm	NB inches	Class	MAX mm	MIN mm	Thickness mm	SWG	Kg/m	Mtrs/Ton	Kg/m	Mtrs/Ton
15	1/2"	L	21.40	21.00	2.00	14	0.947	1056	1.008	992
		M	21.80	21.00	2.60	12	1.21	826	1.274	785
		H	21.80	21.00	3.20	10	1.44	694	1.504	665
20	3/4"	L	26.90	26.40	2.30	13	1.38	725	1.451	689
		M	27.30	26.50	2.60	12	1.56	641	1.632	613
		H	27.30	26.50	3.20	10	1.87	535	1.933	517
25	1"	L	33.80	33.20	2.60	12	1.98	505	2.082	480
		M	34.20	33.30	3.20	10	2.41	415	2.515	398
		H	34.20	33.30	4.00	8	2.93	341	3.048	328
32	1¼"	L	42.50	41.90	2.60	12	2.54	394	2.671	374
		M	42.90	42.00	3.20	10	3.10	323	3.237	309
		H	42.90	42.00	4.00	8	3.79	264	3.917	255
40	1½"	L	48.40	47.80	2.90	11	3.23	310	3.398	294
		M	48.80	47.90	3.20	10	3.56	281	3.721	269
		H	48.80	47.90	4.00	8	4.37	229	4.525	221
50	2"	L	60.20	59.60	2.90	11	4.08	245	4.295	233
		M	60.80	79.70	3.60	9	5.03	199	5.236	191
		H	60.80	59.70	4.50	7	6.19	162	6.419	156
65	2½"	L	76.00	75.20	3.20	10	5.71	175	6.018	166
		M	76.60	75.30	3.60	9	6.42	156	6.741	148
		H	76.60	75.30	4.50	7	7.93	126	8.215	122
80	3"	L	88.70	87.90	3.20	10	6.72	149	7.122	140
		M	89.50	88.00	4.00	8	8.36	120	8.756	114
		H	89.50	88.00	4.80	6	9.90	101	10.609	97
100	4"	L	113.90	113.00	3.60	9	9.75	103	10.586	94
		M	115.00	113.10	4.50	7	12.20	82	13.258	75
		H	115.00	113.10	5.40	5	14.50	69	15.552	64
125	5"	M	140.80	138.50	4.80	6	15.90	63	17.149	58
125	5"	H	140.80	138.50	5.40	5	17.90	56	19.199	52
150	6"	M	166.50	163.90	4.80	6	18.90	53	20.300	49
150	6"	H	166.50	163.90	5.40	5	21.30	47	22.922	44

Tolerance — Thickness: Light +Unlimited, Medium/Heavy: +Unlimited −8% | Weight: Light ±5%, Medium/Heavy ±7.5% | (For quantities per load of 10 Tonnes minimum) (L) −8% HO% M/H ±10/−

Black Plain-End Pipes — Approximate Meterage per M.T.

Size range with meterage per metric tonne by SWG thickness

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Inches	NB mm	OD mm	14 Swg 2.00mm	13 Swg 2.35mm	12 Swg 2.65mm	11 Swg 2.90mm	10 Swg 3.25mm	9 Swg 3.65mm	8 Swg 4.05mm	7 Swg 4.50mm	6 Swg 4.85mm	5 Swg 5.40mm
1/2	15	21.30	1050	911	820	760	690	–	–	–	–	–
3/4	20	26.90	814	709	633	583	526	–	–	–	–	–
1	25	33.70	639	550	498	454	410	370	337	–	–	–
1 1/4	32	42.40	502	431	388	354	318	287	260	–	–	–
1 1/2	40	48.30	438	376	335	308	277	249	226	–	–	–
2	50	60.30	348	298	265	243	219	196	178	162	–	–
2 1/2	65	76.10	274	234	208	191	172	154	139	127	–	–
3	80	88.90	233	196	177	163	147	130	118	107	99	–
3 1/2	90	101.60	203	174	154	141	127	113	103	93	86	–
4	100	114.30	181	154	137	126	112	101	91	83	76	69
4 1/2	110	127.00	162	138	123	113	101	90	81	74	68	62
5	125	139.70	147	125	111	102	91	82	74	67	62	56
5 1/2	135	152.40	135	115	102	94	84	75	67	61	57	51
6	150	165.10	124	106	94	86	77	69	62	56	52	47

Also available in pipe sizes 8" to 36" in thickness ranging from 3.25 mm to 12 mm.

Closed Structurals (RHS / SHS) — IS 4923, Gr. Yst 240

Section properties including moment of inertia, radius of gyration and elastic modulus

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Section D×B mm	Thickness T mm	Sec.Area A sq.cm	Weight W kg/m	Moment of Inertia		Radius of Gyration		Elastic Modulus
Section D×B mm	Thickness T mm	Sec.Area A sq.cm	Weight W kg/m	Lxx cm4	Lyy cm4	xrxx cm	yyy cm	Zxx cm3	Zyy cm3
25 × 25	3.20	2.53	1.98	1.89	1.89	0.86	0.86	1.51	1.51
38 × 38	3.20	4.19	3.29	8.18	8.18	1.40	1.40	4.30	4.30
38 × 38	4.00	5.03	3.95	9.26	9.26	1.36	1.36	4.48	4.87
49.5 × 49.5	2.90	5.19	4.07	18.37	18.37	1.88	1.88	7.42	7.42
	3.60	6.28	4.93	21.42	21.42	1.85	1.85	8.65	8.65
	4.50	7.58	5.95	24.64	24.64	1.80	1.80	9.96	9.96
72 × 72	3.20	8.54	6.70	66.32	66.32	2.79	2.79	18.42	18.42
	4.00	10.47	8.22	79.03	79.03	2.75	2.75	21.95	21.95
	4.80	12.31	9.66	90.31	90.31	2.71	2.71	25.09	25.09
91.5 × 91.5	3.60	12.32	9.67	156.49	156.49	3.56	3.56	34.21	34.21
	4.50	15.14	11.88	187.57	187.57	3.52	3.52	41.00	41.00
	5.40	17.85	14.01	215.68	215.68	3.48	3.48	47.14	47.14
113.5 × 113.5	4.80	20.28	15.92	393.30	393.30	4.40	4.40	69.30	69.30
113.5 × 113.5	5.40	22.60	17.74	432.58	432.58	4.38	4.38	76.23	76.23
132 × 132	4.80	23.83	18.71	634.39	634.39	5.16	5.16	96.12	96.12
132 × 132	5.40	26.59	20.88	700.11	700.11	5.13	5.13	106.08	106.08
50 × 25	3.20	4.13	3.24	11.63	3.80	1.68	0.96	4.65	3.04
66 × 33	2.90	5.19	4.07	27.33	9.12	2.29	1.33	8.28	5.53
	3.60	6.28	4.93	31.87	10.52	2.25	1.29	9.66	6.37
	4.50	7.58	5.95	36.64	11.93	2.20	1.25	11.10	7.23
96 × 48	3.20	8.54	6.70	98.61	33.28	3.40	1.97	20.54	13.87
	4.00	10.47	8.22	117.55	39.32	3.34	1.94	24.49	16.38
	4.80	12.31	9.66	134.35	44.55	3.30	1.90	27.99	18.56
122 × 61	3.60	12.32	9.67	232.61	78.83	4.34	2.53	38.13	25.84
	4.50	15.14	11.88	278.94	93.78	4.29	2.49	45.73	30.75
	5.40	17.85	14.01	320.83	107.03	4.24	2.45	52.60	35.09
145 × 82	4.80	20.28	15.92	555.16	228.50	5.23	3.36	76.57	55.73
145 × 82	5.40	22.60	17.74	610.85	250.59	5.20	3.33	84.26	61.12
172 × 92	4.80	23.83	18.71	917.13	346.91	6.20	3.82	106.64	75.41
172 × 92	5.40	26.59	20.88	1012.47	381.74	6.17	3.79	117.73	82.99