... Gr.B 3.Size:1/2-20inch ASTM A53/A106/API 5L Gr.b seamless steel pipe Product Introduction: 1. ... 3. Steel Grade:A53 (A,B),A106(A,B),API 5L Gr.B,X42,X52,X60,st42,st37,st52,SS400 ... cap,marking,bundles,wowen bag. 6. Tolerance:According to the specification we adopt. 7. Technique:Cold drawn for small size, ... 65 P:≤0.035 S:≤0.035 9. Production Certificate:API 5L ,API 5CT,ISO 10. Inspection: BV,SGS,IBR (Charge ...