Super Duplex 2507 13-3/8 inch Heavy Wall Casing from China
Seamless SAF 2507 super duplex stainless casing with 13-3/8 inch OD, 15 mm wall thickness for ultra-corrosive subsea environments. Provides exceptional pitting and crevice corrosion resistance. HTS 7304.24.40.60 applies to this heavy-wall stainless drill casing configuration.
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
• Full material traceability from heat to pipe required; provide heat treatment records and charpy impact tests
• Avoid common pitfall of incorrect wall thickness measurement—use ultrasonic testing reports
• Customs may request proof of 'drilling for oil/gas' end use via end-user statements