... PSL1 / PSL2 TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical,electric power,boiler etc as they ... pipelineASTM A333A333 GR6steel pipe forhigh-pressure boilerUsed in manufacturing by high pressure boiler tube,the collection ... X52,X56,X60,X65,X70,X80ERW STEEL PIPEUsed in general structure stents, low voltage liquid transportation ... for low-pressure fluid transport service