Martensitic 13-5PH Alloy Seamless Line Pipe from China
13-5PH precipitation-hardening martensitic alloy seamless line pipe for aggressive oilfield pipeline conditions. Fits HTS 7304.19.50 as other alloy steel seamless line pipe, leveraging PH properties for strength without full stainless designation. Used in HP/HT reservoir tiebacks.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Provide PH heat treatment and hardness test results for alloy verification
• Use end-user affidavits confirming pipeline vs. downhole application