... 22 mm 3.Length:1-24m Product nameERW Welded Pipe for bridge construction S460M Out Diameter21.3mm- ... KS 4602, KS3583, GB/T9711.1/2,etc.EndPlain end, beveled, cut square, grooved, threaded and coupling, ... and socketed steel tubes and tubularand for plain end steel tubes- suitable for welding or for ... to form cast-in-place concrete piles - for welded, riveted,or bolted construction of bridges and buildings ...