Grade X42 Welded Gas Line Pipe 18 Inch Diameter from China

This API 5L X42 grade pipe has an 18-inch (457.2 mm) external diameter, longitudinally welded from nonalloy steel sheets for natural gas distribution pipelines. It withstands pressures up to 1000 psi and includes corrosion-resistant coatings. HTS 7305.12.1030 applies for its line pipe function, circular cross-section, and precise size specs.

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

Label with exact grade (X42) and yield strength to match statistical reporting requirements

Obtain pre-shipment inspection certificates for weld quality to expedite customs clearance

Avoid misdeclaration of diameter; use caliper measurements certified by third-party labs