13Cr Seamless Alloy Steel Line Pipe for Sour Oil Service from China
Seamless 13% chromium alloy steel line pipe designed for corrosive sour oil environments in pipelines, providing excellent resistance to H2S and CO2. It qualifies for HTS 7304.19.50 as a seamless product of other alloy steel intended for oil pipelines. The chrome content enhances durability without qualifying as stainless.
Duty Rate — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Submit NACE MR0175 compliance certificates to validate sour service resistance for proper classification
• Document seamless manufacturing method via ultrasonic testing reports to differentiate from welded pipes
• Watch for reclassification risks if pipes exceed certain diameters better suited to casing categories