Seamless pipe BS 1387-1957 heavy black and galvanized

Nominal	Approx. Outside		Wall Thickness			Weight of black tube						Number
Pipe Size	Diameter					Plain End			Threading and Coupling			of threads
in	in	mm	SWG	in	mm	lbs/ft	kg/ft	kg/m	lbs/ft	kg/ft	kg/m	per inch
1/8	0.406	10.319	12	0.104	2.642	0.331	0.15	0.493	0.333	0.151	0.496	28
1/4	0.531	13.494	11	0.116	2.946	0.517	0.235	0.769	0.52	0.236	0.774	19
3/8	0.688	17.462	11	0.116	2.946	0.686	0.311	1.02	0.693	0.313	1.03	19
1/2	0.844	21.431	10	0.128	3.251	0.975	0.443	1.45	0.982	0.446	1.46	14
3/4	1.063	26.987	10	0.128	3.251	1.27	0.576	1.89	1.28	0.581	1.91	14
1	1.344	34.131	8	0.16	4.064	2	0.907	2.98	2.01	0.912	2.99	11
1 1/4	1.638	42.862	8	0.16	4.064	2.58	1.17	3.84	2.6	1.18	3.87	11
1 1/2	1.906	48.419	8	0.16	4.064	2.98	1.35	4.43	3.01	1.37	4.48	11
2	2.375	60.325	7	0.176	4.47	4.14	1.88	6.16	4.2	1.9	6.24	11
2 1/2	3	76.2	7	0.176	4.47	5.31	2.41	7.9	5.39	2.45	8.2	11
3	3.5	88.9	6	0.192	4.877	6.79	3.07	10.1	6.86	3.12	10.2	11
3 1/2	4	101.6	6	0.192	4.877	7.73	3.52	11.5	7.87	3.57	11.7	11
4	4.5	114.3	5	0.212	5.385	9.68	4.4	14.4	9.88	4.5	14.7	11
5	5.5	139.7	5	0.212	5.385	12	5.44	17.9	12.3	5.58	18.3	11
6	6.5	165.1	5	0.212	5.385	14.3	6.49	21.3	14.7	6.67	21.9	11