Tubular -> C350 / C450 ASTM (Rectangular and Square)

ASTM Rectangular Hollow Section 12.20 Metre Lengths
Outside Dimens ( mm )	Wall Thickness ( mm )	Mass ( kg / m ) NOPC
305 x 152	12.5	81.7
305 x 203	6.3	48.3
305 x 203	8.0	59.6
305 x 203	9.5	70.7
305 x 203	12.5	91.9
356 x 254	9.5	85.9
356 x 254	12.5	112.0
406 x 305	8.0	85.0
406 x 305	9.5	101.0
406 x 305	12.5	112.0
508 x 203	9.5	101.0

ASTM Square Hollow Section 12.20 Metre Lengths
Outside Dimens ( mm )	Wall Thickness ( mm )	Mass ( kg / m ) Painted
305 x 305	6.3	58.4
305 x 305	8.0	72.3
305 x 305	9.5	85.9
305 x 305	12.5	112.0
356 x 356	8.0	85.9
356 x 356	9.5	101.0
356 x 356	12.5	132.0
406 x 406	8.0	97.6
406 x 406	9.5	116.0
406 x 406	12.5	150.0