... domestic and abroad,and it is known for high quality and more competitive price! ASTM A53 GR.B Seamless ... :painting,BE,plastic caps,ma ASTM A53 GR.B Seamless TubeSpecifications1)Seamless steel tube per ASTM ... A106B/API-5L GR.B/A53 2)Size: 1/4"-28"*SCH20 ... and ASTM A-53 Grade BChemical composition, %, no moreCMnSiPSCr0.17- 0.240.35- 0.650.17- 0.370.0350.0400.25Mechanical properties of ...