... /A106/API 5L Gr.b seamless steel pipe 1.Standard:ASTM,API,DIN,GOST 2.Grade:A53,A106,API 5L Gr.B 3.Size:1 ... /2-20inch ASTM A53/A106/API 5L Gr.b seamless steel pipe Product Introduction: 1. Kind: carbon steel seamless pipe 2. Size: Diameter: 1/2 inch to 24 ... inch Thickness: 2mm-60mm 3. Steel Grade:A53 (A,B),A106(A,B),API ...