ERW/ HFIW MS/ CS Black Pipes & amp; GI Pipes, API Pipes, ASTM Grade A & amp; B Pipes, SS Pipes ( Grade 202 & amp; 304) ” in the size range of 15 NB to 300 NB ( & frac12; ” to 12” ) out of wall thickness ranging from 2 mm to 10 mm, Square Hollow Section ( SHS) , Rectangle Hollow Section ( RHS) in many running sizes & amp; thickness and TUBULAR POLES from 410 SP-1 to 410 SP-72.