... :1.8 - 22 mm 3.Length:1-24m Product nameERW Welded Pipe for bridge construction S460M Out Diameter21.3mm-610mm, 1/2 ... .Quality gradeFirst class, prime, newly produced, secondary , stock etc.Material/Steel gradeA, B, X42, X46, X52, X56, X60, X65, X70, L175 ... - suitable for welding or for screwing to BS21 pipe threads, loose steel tubes, scaffolds- used for the conveyance of fluids as well ...