X70 Grade Seamless Alloy Line Pipe for Gas Pipelines from China
X70 grade seamless alloy steel pipe engineered for natural gas transmission pipelines, offering high yield strength and resistance to sour service environments. Classified under HTS 7304.19.50 due to its seamless construction from other alloy steel (non-stainless) tailored for gas pipeline applications. It meets rigorous industry standards for long-distance energy transport.
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
• Include hydrostatic test certificates and chemical analysis reports to prove alloy content and suitability for sour gas service
• Label pipes clearly with grade markings and dimensions to facilitate customs verification as line pipe
• Avoid common pitfalls by distinguishing from drill pipe, which requires different end-use declarations