... A672 CL11-23,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1,PSL2 X42,X46,X52,X60,X65,X70 etc. 2. HSAW / SAWH / SSAW / SAW / SPIRAL ... #,SS400,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1 X42,X46,X52,X60,X65,X70 etc. 3.HOT ROLLED SEAMLESS STEEL PIPES;GOST 8731-74 ... ,API 5L GR B,ST.52.3,ST.37.2,ST.20#,SS400,S235JR,S355J2H,S355JOH,Q235B,16MN ,PSL1,PSL2 X42,X46,X52,X60,X65 ...