left coupling oil casing pipe tubing Chamfer coupling

Product Details Place of Origin: China Certification: API Thickness: 4, 20 Application: Oil Pipe Technique: Hot Rolled Alloy Or Not: Non-alloy Secondary Or Not: Non-secondary Special Pipe: API Pipe Section Shape: Round Outer Diameter: 60, 508 Couplings Right Type EU 2-7/8" N80 Grade Couplings Right Type EU 2-3/8" N80 Grade Couplings Right Type NU 2-7/8" N80 Grade Couplings Right Type NU 2-3/8" N80 Grade Couplings Right Type EU 3-1/2" N80 Grade Couplings Right Type EU 3-1