Imported with coupling
Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: > Casing and tubing of a kind used in drilling for oil or gas: > Welded of stainless steel: > Tubing > Imported with coupling
Duty Rate (from China)
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
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
Products classified under HTS 7306.21.80.10
API 5ST Stainless Steel OCTG Tubing with Coupling
Welded stainless steel tubing designed for oil and gas drilling operations, featuring a threaded coupling for secure connection to casing strings. Classified under HTS 7306.21.80.10 due to its welded construction, stainless steel material, and importation with integral coupling as specified for OCTG tubing. Meets API 5ST standards for sour service environments in downhole applications.
13CR Stainless Steel Drilling Tubing with Premium Coupling
Welded 13% chromium stainless steel tubing for corrosive oil/gas wells, imported with premium threaded couplings for enhanced joint integrity. Falls under 7306.21.80.10 as welded stainless OCTG tubing imported with couplings, optimized for CO2/H2S environments. Standard OD 2-7/8" with EUE or BTC connections.
Duplex 2205 Stainless OCTG Tubing with Coupling
High-strength duplex 2205 (UNS S31803) welded stainless steel tubing for deepwater oil/gas drilling, complete with integral couplings. HTS 7306.21.80.10 applies to its welded stainless construction and coupled importation for OCTG use. Provides superior corrosion and fatigue resistance in harsh offshore conditions.
Super Duplex 2507 Drilling Tubing with EUE Coupling
Welded super duplex SAF 2507 stainless tubing for high-pressure/high-temperature (HPHT) gas wells, imported with EUE couplings. Precisely matches HTS 7306.21.80.10 for welded stainless OCTG tubing with couplings used in extreme drilling. UNS S32750 grade offers unmatched pitting resistance.
"2-3/8\" 13-5/8
Welded L80 grade stainless steel 2-3/8" OD tubing weighing 13.5/8 lbs/ft for slimhole oil drilling, shipped with matching couplings. HTS 7306.21.80.10 covers this welded stainless OCTG configuration imported complete with connections. Type 316L material for general corrosion protection.
4-1/2" TP347H Stainless OCTG Tubing with Coupling
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.