Round Steel Columns - Knoll Steel Inc.

Round Steel Pipe Column Sizes

Standard Weights
Nominal Diameter Inches	Outside Diameter Inches	Inside Diameter Inches	Wall Thickness Inches	Weight Per FT LBS Plain Ends
½	0.84	0.622	0.109	0.85
½	1.05	0.824	0.113	1.13
½	1.315	1.049	0.133	1.68
½	1.66	1.38	0.14	2.27
½	1.9	1.61	0.145	2.72
½	2.375	2.067	0.154	3.65
½	2.875	2.469	0.203	5.79
½	3.5	3.068	0.216	7.58
½	4	3.548	0.226	9.11
½	4.5	4.026	0.237	10.79
½	5.563	5.047	0.258	14.62
½	6.625	6.065	0.28	18.97
½	8.625	7.981	0.322	28.55
½	10.75	10.02	0.365	40.88
½	12.75	12	0.375	49.56
Strong
½	0.84	0.546	0.147	1.09
¾	1.05	0.742	0.154	1.47
1	1.315	0.957	0.179	2.17
1¼	1.66	1.278	0.191	3
1½	1.9	1.5	0.2	3.63
2	2.375	1.939	0.218	5.02
2½	2.875	2.323	0.276	7.66
3	3.5	2.9	0.3	10.25
3½	4	3.364	0.318	12.5
4	4.5	3.826	0.337	14.98
5	5.563	4.813	0.375	20.78
6	6.625	5.761	0.432	28.57
8	8.625	7.625	0.5	43.39
10	10.75	9.75	0.5	54.74
Extra Strong
2	2.375	1.503	0.436	9.03
2½	2.875	1.771	0.552	13.69
3	3.5	2.3	0.6	18.58
4	4.5	3.152	0.674	27.54
5	5.563	4.063	0.75	38.55
6	6.625	4.897	0.864	53.16
8	8.625	6.875	0.875	72.42