SAW,SAWH,HSAW,SSAW SPIRAL WELD STEEL PIPES API 5L PSL1 PSL2 X42,X46,X52,X60,X65,X70,ASTM A36,A53GR B,ST52.3,ST37.2,S235JR,S355J2H,S355J0HDec 30, 2013
... ,ST.20#,SS400,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1 X42,X46,X52,X60,X65,X70 etc. 2.SAWL / LSAW / ERW / EFW WELDED STEEL PIPES; ... CL11-23,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1,PSL2 X42,X46,X52,X60,X65,X70 etc. 3.HOT ROLLED SEAMLESS STEEL PIPES;GOST 8731-74 ... 20#,SS400,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1,PSL2 X42,X46,X52,X60,X65,X70 etc. 4.SHS SQUARE HOLLOW SECTIONS,RHS RECTANGULAR HOLLOW SECTIONS ...