Erw Black Tubes & GI Steel Tubes

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Our range of galvanized steel tubes are covered by a layer of zinc & are used for varied applications. These are available in various size and shapes based on the customers requirements. These tubes are natural corrosion resistant and hold functional durability, even in outdoor environments. Apart from preventing water corrosion, it is equally effective in dry, indoor environments.

Technical Data of Tubes conforming to EN : 10255

Normal Bore			Outside Dia. (mm)	Thickness (mm)	Mass of Black Tube (Kg./Mtr)
Normal Bore
(mm)		(inch)
L I G H T	15	½	21.4	2	0.947
	20	¾	26.9	2.3	1.38
	25	1	33.8	2.6	1.98
	32	1¼	42.5	2.6	2.54
	40	1½	48.4	2.9	3.23
	50	2	60.2	2.9	4.08
	65	2½	76	3.2	5.71
	80	3	88.7	3.2	6.72
	100	4	113.9	3.6	9.75
Normal Bore			Outside Dia. (mm)	Thickness (mm)	Mass of Black Tube (Kg./Mtr)
Normal Bore
(mm)		(inch)
M E D I U M	15	½	21.7	2.6	1.21
	20	¾	27.2	2.6	1.56
	25	1	34.2	3.2	2.41
	32	1¼	42.9	3.2	3.1
	40	1½	48.8	3.2	3.57
	50	2	60.8	3.6	5.03
	65	2½	76.6	3.6	6.43
	80	3	89.5	4	8.37
	100	4	114.9	4.5	12.2
Normal Bore			Outside Dia. (mm)	Thickness (mm)	Mass of Black Tube (Kg./Mtr)
Normal Bore
(mm)		(inch)
H E A V Y	15	½	21.7	3.2	1.44
	20	¾	27.2	3.2	1.87
	25	1	34.2	4	2.94
	32	1¼	42.9	4	3.8
	40	1½	48.8	4	4.38
	50	2	60.8	4.5	6.19
	65	2½	76.6	4.5	7.93
	80	3	89.5	5	10.3
	100	4	114.9	5.4	14.5

Black Steel Pipes as per DIN 2439, 2440 & 2441

Nominal Bore N W		Outside diameter	Light tubes (DIN 2439)		Medium tubes (DIN 2440)		Heavy tubes (DIN 2441)
			Light tubes (DIN 2439)		Medium tubes (DIN 2440)		Heavy tubes (DIN 2441)
			Wall thickness	Weight (plain ends)	thickness Wall	(plain ends) Weight	thickness Wall	(plain ends) Weight
			Wall thickness	Weight (plain ends)	thickness Wall	(plain ends) Weight	thickness Wall	(plain ends) Weight
Inches	mm	d	S	kg/m	S	kg/m	S	kg/m
1/2	15	21.3	2.35	1.1	2.65	1.22	3.25	1.45
3/4	20	26.9	2.35	1.41	2.65	1.58	3.25	1.9
1	25	33.7	2.9	2.21	3.25	2.44	4.05	2.97
1 1/4	32	42.4	2.9	2.84	3.25	3.14	4.05	3.84
1 1/2	40	48.3	2.9	3.26	3.25	3.61	4.05	4.43
2	50	60.3	3.25	4.56	3.65	5.1	4.5	6.17
2 1/2	65	76.1	3.25	5.81	3.65	6.51	4.5	7.9
3	80	88.9	3.65	7.65	4.05	8.47	4.85	10.1
4	100	114.3	4.05	11	4.5	12.1	5.4	14.4
5	125	139.7	4.5	15	4.85	16.13	5.4	17.9
6	150	165.1	4.5	17.82	4.85	19.17	5.4	21.3

Iso Standard For Mild Steel Tubes [Extract From Iso-65-2981 (E)]

DN	Designation of thread	Outside Diameter D mm	Thickness (T) and masses per unit length (M) according to the series
			Heavy Series		Medium Series		Light Series 1		Light Series 2
			T mm	Screwed Socketed M kg/m	T mm	Screwed Socketed M kg/m	T mm	Screwed Socketed M kg/m	T mm	Screwed Socketed M kg/m
15	½	21.3	3.2	1.45	2.6	1.22	2.3	1.09	2	0.956
20	¾	26.9	3.2	1.88	2.6	1.57	2.3	1.4	2.3	1.39
26	1	33.7	4	2.95	3.2	2.43	2.9	2.22	2.6	2
32	1¼	42.4	4	3.82	3.2	3.13	2.9	2.85	2.6	2.57
40	1½	48.3	4	4.41	3.2	3.6	2.9	3.28	2.9	3.27
50	2	60.3	4.5	6.26	3.6	5.1	3.2	4.56	2.9	4.15
65	2½	76.1	4.5	8.05	3.6	6.54	3.2	5.85	3.2	5.83
80	3	88.9	5	10.5	4	8.53	3.6	7.72	3.2	6.89
100	4	114.3	5.4	14.8	4.5	12.5	4	11.1	3.6	10
125	5	139.7	5.4	18.4	5	17.1
150	6	165.1	5.4	21.9	5	20.4

Black And Hot Dipped Galvanized Steel Pipes Astm-A-53 (Sch.40) Grade A & B

Nominal Size		Outside Diameter		Wall Thickness		Weights			No. Of Pieces Per Bundle
Nominal Size		Outside Diameter		Wall Thickness		Black Pipes Plain End			No. Of Pieces Per Bundle
mm	inch	mm	inch	mm	inch	Kg/mtr	lbs/ft	ft/ton
15	1/2	21.3	0.84	2.77	0.109	1.27	0.85	2592	120
20	3/4	26.7	1.05	2.87	0.113	1.69	1.13	1945	90
25	1	33.4	1.315	3.38	0.133	2.5	1.68	1311	60
32	1.1/4	42.2	1.66	3.56	0.14	3.39	2.27	967	42
40	1.1/2	48.3	1.9	3.68	0.145	4.05	2.72	810	36
50	2	60.3	2.375	3.91	0.154	5.44	3.65	603	26
65	2.1/2	73	2.875	5.16	0.203	8.63	5.79	380	18
80	3	88.9	3.5	5.49	0.216	11.29	7.58	291	14
90	3.1/2	101.6	4	5.74	0.226	13.57	9.11	242	12
100	4	114.3	4.5	6.02	0.237	16.07	10.79	204	10
125	5	141.3	5.56	6.55	0.258	21.77	14.62	151	8
150	6	168.3	6.625	7.11	0.28	28.26	18.97	116	6
200	8	219.1	8.625	8.18	0.322	42.55	28.55	77	4

Technical Data Of Welded Mild Steel Pipes (Black And Galvanised) Conforming To Bs :1387 Of 1985

Nominal Bore		Outside Diameter				Wall Thickness		Weight of Black Pipes						Weight of Galvanised Pipes (Calculated)
Nominal Bore		Max.		Min.		Wall Thickness		Plain End			Screwed & Socketed			Plain End			Screwed & Socketed
inch	mm	inch	mm	inch	mm	inch	mm	Kg/mtr	mtr/ton	ft/ton	Kg/mtr	mtr/ton	ft/ton	Kg/mtr	mtr/ton	ft/ton	Kg/mtr	mtr/ton	ft/ton
1/21	15	0.843	21.4	0.827	21	0.079	2	0.947	1056	3465	0.956	1046	3432	1	1000	3281	1.009	991	3251
3/4	20	1.059	26.9	1.039	26.4	0.091	2.3	1.38	725	2379	1.39	719	2359	1.44	694	2277	1.45	690	2264
1	25	1.331	33.8	1.307	33.2	0.102	2.6	1.98	505	1657	2	500	1641	2.06	485	1591	2.08	481	1578
1^1/4	32	1.673	42.5	1.65	41.9	0.102	2.6	2.54	394	1293	2.57	389	1276	2.64	379	1243	2.67	375	1230
1^1/2	40	1.906	48.4	1.882	47.8	0.114	2.9	3.23	310	1017	3.27	306	1004	3.34	299	981	3.38	296	971
2	50	2.37	60.2	2.346	59.6	0.114	2.9	4.08	245	804	4.15	241	791	4.22	237	778	4.29	233	764
2^1/2	65	2.992	76	2.961	75.2	0.126	3.2	5.71	175	574	5.83	172	564	5.89	170	558	6.01	166	545
3	80	3492	88.7	3.461	87.9	0.126	3.2	6.72	149	489	6.89	145	476	6.93	144	472	7.1	141	463
4	100	4.484	113.9	4.449	113	0.142	3.6	9.75	103	338	10	100	328	10.03	100	328	10.28	97	318
1/2	15	0.854	21.7	0.831	21.1	0.102	2.6	1.21	826	2710	1.22	820	2690	1.26	794	2605	1.27	787	2582
3/4	20	1.071	27.2	1.047	26.6	0.102	2.6	1.56	641	2103	1.57	637	2090	1.62	617	2024	1.63	613	2011
1	25	1.346	34.2	1.315	33.4	0.126	3.2	2.41	415	1362	2.43	412	1352	2.49	402	1319	2.51	398	1306
1^1/4	32	1.689	42.9	1.657	42.1	0.126	3.2	3.1	323	1060	3.13	319	1047	3.2	313	1027	3.23	310	1017
1^1/2	40	1.921	48.8	1.89	48	0.126	3.2	3.57	280	919	3.61	277	909	3.68	272	892	3.72	269	883
2	50	2.394	60.8	2.354	59.8	0.142	3.6	5.03	199	653	5.1	196	643	5.17	193	633	5.24	191	627
2^1/2	65	3.016	76.6	2.969	75.4	0.157	3.6	6.43	156	512	6.55	153	502	6.61	151	495	6.73	149	489
3	80	3.524	89.5	3.469	88.1	0.177	4	8.37	119	390	8.54	117	384	8.58	117	384	8.75	114	374
4	100	4.524	114.9	4.461	113.3	0.177	4.5	12.2	82	269	12.5	80	262	12.48	80	262	12.78	78	256
5	125	5.535	140.6	5.461	138.7	0.197	5	16.6	60	197	17.1	58	190	16.94	59	194	17.44	57	187
6	130	6.539	166.1	6.461	164.1	0.197	5	19.7	51	167	20.3	49	161	20.1	50	164	20.7	48	157
1/2	15	0.854	21.7	0.831	21.1	0.126	3.2	1.44	694	2277	1.45	690	2264	1.49	671	2202	1.5	667	2188
3/4	20	1.071	27.2	1.047	26.6	0.126	3.2	1.87	535	1755	1.88	535	1755	1.93	518	1700	1.94	515	1690
1	25	1.346	34.2	1.315	33.4	0.157	4	2.94	340	1116	2.96	340	1116	3.01	332	1089	3.03	330	1083
1^1/4	32	1.689	42.9	1.657	42.1	0.157	4	3.8	263	863	3.83	263	863	3.9	256	840	3.93	254	833
1^1/2	40	1.921	48.8	1.89	48	0.157	4	4.38	228	748	4.42	228	748	4.49	223	732	4.53	221	725
2	50	2.394	60.8	2.354	59.8	0.177	4.5	6.19	162	532	6.26	162	532	6.33	158	518	6.4	156	512
2^1/2	65	3.016	76.6	2.969	75.4	0.177	4.5	7.93	126	413	8.05	126	413	8.11	123	404	8.23	122	400
3	80	3.524	89.5	3.469	88.1	0.197	5	10.3	97	318	10.5	97	318	10.51	95	312	10.71	93	305
4	100	4.524	114.9	4.461	113.3	0.213	5.4	14.5	69	226	14.8	69	226	14.77	68	223	15.07	66	217
5	125	5.535	140.6	5.461	138.7	0.213	5.4	17.9	56	184	18.4	56	184	18.24	55	180	18.74	53	174
6	150	6.539	166.1	6.461	164.1	0.213	5.4	21.3	47	154	21.9	47	154	21.7	46	151	22.3	45	148

Scaffolding Pipes/ Tubes Confirming to BS 1139 SECTION 1.1 : 1990

Size		Thickness		Nominal Mass		Meters/Tonne		Feet/Tonne		No. of Pipes Packed Per Standard Bundle (1 Tonne Approx.)
Outside Diameter		Thickness		Black Plain End	Galvanised Plain End Calculated	Black Plain End Calculated	Galvanised Plain End Calculated	Plain Black End Calculated	Plain Galvanised End Calculated	No. of Pipes Packed Per Standard Bundle (1 Tonne Approx.)
mm	inch	mm	inch	Kg/mtr	Kg/mtr	Meters	Meters	Feet	Feet
48.3	1.9	4	0.158	4.37	4.48	229	223	751	732	37120
Standard length 6.40 meters +/- 0.05 meters or as per customers requirements

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