13CR Stainless Steel 14 inch OD Casing for Sour Gas Wells
Seamless 13Cr martensitic stainless steel casing with 14-inch (355.6 mm) OD and minimum 1/2 inch (12.7 mm) wall thickness for H2S-resistant sour service. Designed for high-pressure oil/gas production in corrosive formations. Classified under 7304.24.40.60 for stainless steel drill casing specs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness under 12.7 mm
Thinner wall stainless casing shifts to 7304.24.50 series while retaining OD and drill pipe function.
If with mechanical connections or welded fittings attached
Casing imported with threaded couplings or accessories becomes 'tube fittings' under Chapter 73 heading 7307.
If specially designed as integral part of downhole pumps
If proven as pump-specific component rather than general casing, may classify under oil field machinery parts.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include NACE MR0175/ISO 15156 certification proving H2S resistance for sour service applications
• Wall thickness must be drift-tested and documented; customs may require ultrasonic thickness verification
• Specify exact grade (13Cr, Super 13Cr) in commercial invoice to match HTS material requirements
Related Products under HTS 7304.24.40.60
API 5CT L-80 13-3/8 inch Stainless Steel Oil Well Casing
Seamless stainless steel casing pipe with 13-3/8 inch OD and 12.7 mm or thicker wall, certified to API 5CT L-80 grade for oil and gas drilling. Used to line and stabilize wellbores in corrosive environments. Falls under HTS 7304.24.40.60 due to seamless stainless steel construction, specific OD range (285.8-406.4 mm), and heavy wall thickness.
Duplex 2205 Stainless Steel 16 inch Production Casing
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Super Duplex 2507 13-3/8 inch Heavy Wall Casing
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