... 5L Grade: PSL1 / PSL2 TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical,electric power,boiler etc ... high pressure boiler tube,the collection box, steam pipe, etcASTM SA106A106 GRBsteel pipe for fluidApplicable to transmission fluid ... are seamless steel tubeASTM A106ASTM A53A53 BA106 Bsteel pipe for structureUsed in general structure, engineering scaffolds, mechanicalASTM ...