Super Duplex 2507 13-3/8 inch Heavy Wall Casing
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If having wall thickness less than 12.7 mm
Thinner-walled stainless casing in same OD range classifies under 7304.24.10.
If imported as complete drill string assemblies
Assembled with tool joints and other components, becomes part of drilling machinery under 8474.
If for use in water well drilling rather than oil/gas
Non-oil/gas drilling casing may classify under 'other' seamless steel tubes.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
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.
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.
Duplex 2205 Stainless Steel 16 inch Production Casing
Seamless Duplex UNS S32205 (2205) stainless steel casing pipe, 16-inch (406.4 mm) OD with 19.05 mm wall thickness for deepwater production wells. Offers superior corrosion fatigue resistance. Meets HTS 7304.24.40.60 criteria for heavy-wall stainless drill casing.
Inconel 625 Alloy C-92 15 inch Oilfield Casing
Seamless Inconel 625 (Alloy C-92) premium casing with 15-inch (381 mm) OD and 14 mm wall thickness for extreme temperature/high-pressure wells. Nickel-chromium alloy provides unmatched corrosion resistance. Classified in 7304.24.40.60 as stainless steel drill casing.