API 5CT L80 Type 9 Alloy Steel Oilfield Tubing
Seamless alloy steel tubing manufactured to API 5CT L80 Type 9 specifications for use as production tubing in oil and gas wells. It features an outside diameter of 4.5 inches (114.3 mm), designed for high-pressure downhole environments with enhanced collapse resistance. Classified under HTS 7304.29.61.45 due to its seamless construction, alloy steel composition, and OD range exceeding 114.3 mm but less than 215.9 mm.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel variants are classified under the stainless subheading 7304.29.31 due to specific chromium/nickel content requirements.
If welded rather than seamless
Welded steel tubes for oil/gas drilling fall under Chapter 73 heading 7306 for other welded tubes.
If outside diameter 215.9 mm or larger
Larger OD tubing exceeds the size range of 7304.29.61.45 and moves to other diameter categories in 7304.39.
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Import Tips & Compliance
• Verify API 5CT certification and material test reports (MTRs) meet ASTM A335 or equivalent standards for alloy steel composition
• Include mill certificates confirming seamless manufacturing process and exact OD measurements to avoid misclassification
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