API 5CT C110 Sour Service Tubing
Seamless C110 alloy steel tubing (OD ≤114.3 mm, wall >9.5 mm) API 5CT certified for H2S sour service in gas wells. HTS 7304.29.61.30 due to alloy steel, seamless, drilling-specific design with thick walls. Prevents cracking in aggressive environments.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If larger OD >114.3 mm
Same specs but bigger diameter uses the wide-mouth tubing subheading.
If stainless steel with fittings
Fitted stainless tubes classify under complex pipe assemblies.
If as parts of oilfield drilling machines
Machinery-specific components may go to Chapter 84 if not general tubing.
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
• Provide HIC/SSCC test results per NACE standards; declare as 'sour service' accurately
• Common issue: incomplete traceability docs delay clearance
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