9-5/8 inch 43.5 lb/ft 28% Cr Duplex Stainless Tubing
Seamless duplex stainless steel tubing with 28% chromium content for conductor casing in offshore oil/gas wells, resisting extreme corrosion and high pressures. Meets stringent API 5CT PSL-3 requirements. Classified in 7304.24.60 for stainless steel drilling tubing.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If carbon steel equivalent for same drilling specs
Material change from stainless to carbon shifts to non-stainless steel headings.
If welded and suitable for drilling
Welded stainless tubes have dedicated subheadings.
If sold as a set with drill collars
Sets of drilling parts are classified as other drilling equipment.
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Import Tips & Compliance
• Submit chemical composition analysis certificates confirming stainless steel (min 10.5% Cr)
• Use ISPM-15 certified wooden cradles for shipping to meet phytosanitary rules
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