... ,and it is known for high quality and more competitive price! ASTM A53 GR.B Seamless Tube 1.WT:2-40mm 2 ... painting,BE,plastic caps,ma ASTM A53 GR.B Seamless TubeSpecifications1)Seamless steel tube per ASTM A106B/API-5L GR.B/A53 ... 0.370.0350.0400.25Mechanical properties of seamless carbon steel pipes, no less thanTensile strength, MPaYield strength, MPaElongation, %41224521 ASTM A53 Seamless Steel Tube