Black CHS Sizes

CHS (pipe) is manufactured to an outside diameter.  To get an approximate inside diameter deduct 2 x thickness away from the OD. Thickness Designations  XL Extra Light,   L  Light,  M Medium,  H  Heavy,  XH  Extra Heavy

Size	Thickness Designation	Imperial Designation	Outside diameter (mm)	t (mm)	Mill Length (m)	kg/m
8nb (M)	M	¼”	13.5	2.3	6.5	0.64
10NB	NB	3/8 ”	17.2	2.3	6.5	0.83
15NB	L	½”	21.3	2	6.5	0.95
15NB	M	½”	21.3	2.6	6.5	1.2
20NB	XL	¾ “	26.9	2	6.5	1.23
20NB	L	¾ “	26.9	2.3	6.5	1.4
20NB	M	¾ “	26.9	2.6	6.5	1.56
20NB	H	¾ “	26.9	3.2	6.5	1.87
25NB	XL	1”	33.7	2	6.5	1.56
25NB	L	1”	33.7	2.6	6.5	1.99
25NB	M	1”	33.7	3.2	6.5	2.41
25NB	H	1”	33.7	4	6.5	2.93
25NB	XH	1”	33.7	4.5	6.5	3.24
32NB	XL	1 ¼ “	42.4	2	6.5	1.99
32NB	L	1 ¼ “	42.4	2.6	6.5	2.55
32NB	M	1 ¼ “	42.4	3.2	6.5	3.09
32NB	H	1 ¼ “	42.4	4	6.5	3.8
32NB	XH	1 ¼ “	42.4	4.9	6.5	4.53
40NB	XL	1 ½ “	48.3	2.3	6.5	2.61
40NB	L	1 ½ “	48.3	2.9	6.5	3.25
40NB	M	1 ½ “	48.3	3.2	6.5	3.56
40NB	H	1 ½ “	48.3	4	6.5	4.37
40NB	XH	1 ½ “	48.3	5.4	6.5	5.71
50NB	XL	2”	60.3	2.3	6.5	3.29
50NB	L	2”	60.3	2.9	6.5	4.11
50NB	M	2”	60.3	3.6	6.5	5.03
50NB	H	2”	60.3	4.5	6.5	6.19
50NB	XH	2”	60.3	5.4	6.5	7.31
65NB	XL	2 ½ “	76.1	2.3	6.5	4.19
65NB	L	2 ½ “	76.1	3.2	6.5	5.75
65NB	M	2 ½ “	76.1	3.6	6.5	6.44
65NB	H	2 ½ “	76.1	4.5	6.5	7.95
80NB	XL	3”	88.9	2.6	6.5	5.53
80NB	L	3”	88.9	3.2	6.5	6.76
80NB	M	3”	88.9	4	6.5	8.38
80NB	H	3”	88.9	5	6.5	10.3
90NB	XL	3 ½ “	101.6	2.6	6.5	6.35
90NB	L	3 ½ “	101.6	3.2	6.5	7.77
90NB	M	3 ½ “	101.6	4	6.5	9.63
90NB	H	3 ½ “	101.6	5	6.5	11.9
100NB	XL	4”	114.3	3.2	6.5	8.77
100NB	L	4”	114.3	3.6	6.5	9.83
100NB	M	4”	114.3	4.5	6.5	12.2
100NB	H	4”	114.3	5.4	6.5	14.5
125NB	XL	5”	139.7	3	6.5	10.1
125NB	L	5”	139.7	3.5	6.5	11.8
125NB	M	5”	139.7	5	6.5	16.6
125NB	H	5”	139.7	5.4	6.5	17.9
150NB	XL	6”	165.1	3	6.5	12
150NB	L	6”	165.1	3.5	6.5	13.9
150NB	M	6”	165.1	5	6.5	19.7
150NB	H	6”	165.1	5.4	6.5	21.3