Description

Nominal Size		Wall Thckness	Manufacture's Standard
			Weight
(mm)	(in)	(mm)	(kg/m)
12 X 12	½ x ½	0.8	0.277
12 X 12	½ x ½	1.0	0.339
12 X 12	½ x ½	1.2	0.397
12 X 12	½ x ½	1.6	0.505
16X 16	⅝ x ⅝	0.8	0.378
16X 16	⅝ x ⅝	1.0	0.464
16X 16	⅝ x ⅝	1.2	0.548
16X 16	⅝ x ⅝	1.6	0.706
19 X 19	¾ x ¾	0.8	0.453
19 X 19	¾ x ¾	1.0	0.559
19 X 19	¾ x ¾	1.2	0.661
32X 32	1¼ x 1¼	1.0	0.967
32X 32	1¼ x 1¼	1.2	1.150
38 X38	1½ x 1½	1.0	1.155
38 X38	1½ x 1½	1.2	1.380
50 X 50	2 x 2	1.2	1.810
12 X 25	½ x 1	0.8	0.277
12 X 25	½ x 1	1.0	0.339
12 X 25	½ x 1	1.2	0.397
12 X 25	½ x 1	1.6	0.505
19 X 38	¾ x 1½	1.0	0.857
19 X 38	¾ x 1½	1.2	1.020
25 X 50	1 x 2	0.8	0.918
25 X 50	1 x 2	1.0	1.140
25 X 50	1 x 2	1.2	1.360
25 X 75	1 x 3	1.2	1.810
38 X 65	1½ x 2½	1.2	1.866
38 X 75	1½ x 3	1.2	2.055

Spec: Manufacture's standard