Description Products:  Welded hot rolled steel tube Steel grade: GB/T 3091 Q195,Q235,Q355 A/B/C/D, ASTM A53 GR.B, API 5L PSL1/PSL2 GR.B,X42,X56,X60,X70 etc. Standard: GB/T 3091, ASTM A53, API 5L Size: ERW OD: 60-603MM  WT:2-25MM    LSAW OD:355-1422MM WT: 7.92-45MM Surface treatment: bare pipe, black painted,hot dipped,3LPE Application: Fluid Pipe, Boiler Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE,Structure Pipe, Other