... ,etc 4)material:mild steel 5)API,ISO,CE,etc BG welded carbon steel pipe TypeApplicationStandardMaterialalloy steel pipeit is used in ... BA106 Bsteel pipe forstructureUsed in general structure,engineering scaffolds, mechanicalASTM A53A53 Bpipeline steel pipeUsed in oil and natural gas ... X42,X46,X52,X56,X60,X65,X70,X80ERW STEEL PIPEUsed in general structure stents, low voltage liquid transportation, etcGB/ ...