... manufacture spiral steel pipe with good quality as per API5L,GB,JIS,DIN ASTM, BS standard and your additional requirements. 1 ... , ASTM A179, ASTM A210 ,ANSI B36.10, GB 5310,10# 20#, 45#,GB 3087, GB/T 8162 ,GB/T81633.Outer Diameter2.24-30.96 mm4 ... 's requirements6.PackingIn bundles tied with steel stripes7.Payment TermT/T, L/C at sight8.Delivery TimeWithin 30 days after signing ...