... Surface finish: pickling, annealing, manual polish and mechanical polish;3) Chemical and Physical characteristic: durable, ... SCM 415 TK, SCM 418 TKJIS G3444 STKM 11A, STKM 12EN 10210 S235JRH, S275J0H, S275J2H, S355J0H, S355J2H TestChemical Component Analysis, Mechanical ... Size InspectionUsageApplicable to the general structure, mechanical structure with seamless steel tubes stainless seamless steel ...