ERW STEEL PIPE
OUTSIDE.D 2"-24" - 60.3--609.6mmW.T 6--14mm
STANDARD : API5L API 5CT GB3091-2001 GB9711.1 GB9711.2
MATERIAL : API5L.B/X42/X52/X60/X70 etc
ST37,ST44,ST52, Q235B/Q345B/L245/L290/L360/L415/L485/20#