4-1/2" TP347H Stainless OCTG Tubing with Coupling from China
High-temperature TP347H stabilized stainless welded tubing 4-1/2" OD for steam injection wells, imported with couplings. Fits HTS 7306.21.80.10 as welded stainless tubing for oil/gas drilling with attached couplings. Heat-resistant grade prevents carbide precipitation.
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
• Document stabilization heat treatment (carbide solution annealing) proving TP347H grade suitability
• Ship vertical in racks to prevent buckling; horizontal stacking risks ovality beyond API tolerances
• Cross-reference with ASTM A312 for seamless equivalents if manufacturing disputed during entry