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Contact SupplierThickness: 5.21 - 22.23 mm Section Shape: Round Outer Diameter: 114.3 - 177.8 mm Place of Origin: China (Mainland) Secondary Or Not: Non-secondary Application: Oil Pipe Technique: Hot Rolled Certification: API Surface Treatment: Other Special Pipe: API Pipe Alloy Or Not: Is Alloy Length: R1,R2,R3 Grade: API L80,API J55-API P110 Standard: API 5CT,API Specifications1) API Spec 5CT 2) J55, K55, L80, N80, P110 3) BTC, STC, LTC Features: 1) Size: 4 12", 5", 5 12", 6 58", 7", 7 58", 8 58", 9 58", 10 34", 11 34", 13 38" 2) Length: R1, R2, R3 3) Grade: J55, K55, L80, N80, P110 4) Standard: API 5CT L80 Physical Properties Y.S. : 552Mpa~655Mpa T.S. Min: 655Mpa Hardness Max: 23