Standard:ASTM,GB,JIS,DIN,API Grade Group:ST35-ST52,A53-A369,16Mn,10#-45# Thickness:2.5 - 80 mm Section Shape:Round Secondary Or Not:Non-secondary Application:Fluid Pipe Technique:Hot Rolled Certification:API Surface Treatment:Paint,Oil Special Pipe:Thick Wall Pipe Alloy Or Not:Non-alloy Length:5m-12m Ends:BE/Plain Brand:Huitong Show More