... pressure boiler tube,the collection box, steam pipe, etcASTM SA106A106 GRBsteel pipe for fluidApplicable to transmission fluid which are seamless ... steel tubeASTM A106ASTM A53A53 BA106 Bsteel pipe for structureUsed in general structure, engineering scaffolds, mechanicalASTM A53A53 ... transportationSY/T5037-2000A53A333 GR6 Spiral steel pipe for low-pressure fluid transport service