13-3/8 inch 54.5 lb/ft L-80 Type 13CR-110SS Stainless Steel Casing
This seamless stainless steel oil well casing pipe has an outside diameter of 339.7 mm (less than 215.9 mm adjusted for reporting), wall thickness of 17.1 mm, and weighs 54.5 lb/ft, designed for corrosive environments in oil and gas drilling. It falls under HTS 7304.24.4020 due to its seamless construction, stainless steel material, casing use, and specified dimensions exceeding 12.7 mm wall thickness. Commonly used in sour service wells requiring high corrosion resistance.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not stainless steel, such as carbon steel grades like L-80 13CR
Non-stainless steel casing shifts to 7304.23, as stainless requires chromium content defining Chapter 73 note for steel alloys.
If sold as individual threaded ends or couplings rather than full casing joints
Threaded pipe fittings or components for casing fall under Chapter 73 heading 7306 for threaded pipes, not complete casing lengths.
If welded construction rather than seamless
Welded stainless steel casing classified under 7304.29, as heading 7304 distinguishes seamless (7304.2x) from welded (7304.3x) oil/gas pipes.
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Import Tips & Compliance
• Verify API 5CT certification and exact dimensions (OD <215.9mm, wall ≥12.7mm) with mill test certificates to confirm HTS 7304.24.4020 classification
• Include detailed chemical composition analysis proving stainless steel (min 10.5% chromium) and seamless manufacturing process in entry documentation
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