... etc 4)material:mild steel 5)API,ISO,CE,etc BG SAW steel pipe TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical, ... ,engineering scaffolds, mechanicalASTM A53A53 Bpipeline steel pipeUsed in oil and natural gas industry in order to transmit the he oxygen ... B,X42,X46,X52,X56,X60,X65,X70,X80ERW STEEL PIPEUsed in general structure stents, low voltage liquid transportation, ...