Standard:ASTM,BS,JIS,DIN,API Grade Group:ST35-ST52,A53-A369,10#-45# Thickness:3 - 60 mm Section Shape:Round Secondary Or Not:Non-secondary Application:Gas Pipe Technique:SAW Certification:ISO Surface Treatment:Black Painting Special Pipe:API Pipe Alloy Or Not:Non-alloy Standard:API/ASTM/JIS/EN Grade:Gr.b, X46/52/65/70 End:bevel/plain Shape:Round Shape Certification:ISO9001 Show More