ERW Welded Pipe for bridge construction S460M 1. Outer Diameter:21.3 ... 1-24m Product nameERW Welded Pipe for bridge construction S460M Out Diameter21.3mm-610mm, 1/2”- ... steel tubes, scaffolds- used for the conveyance of fluids as well as for other applications, applies ... concrete piles - for welded, riveted,or bolted construction of bridges and buildings, and for generalstructural purposes- suitable ...