13-3/8 inch 72# L-80 Stainless Steel Casing Pipe
Seamless stainless steel casing pipe with 13-3/8 inch OD (339.7 mm total but threaded/coupled assembly 8.5-11.25 inches), 72 lb/ft weight, L-80 grade, wall thickness 15.2 mm, threaded and coupled ends for oil/gas drilling. Classified under 7304.24.30.40 due to stainless steel construction, seamless design, casing use in drilling, OD in 215.9-285.8 mm effective range for coupled, and wall ≥12.7 mm.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of carbon or alloy steel instead of stainless
Non-stainless steel casing moves to 7304.29 subheading while maintaining same size/thickness specs.
If outside diameter under 215.9 mm
Smaller OD casing falls into different size subheading 7304.24.10 despite same stainless/thickness specs.
If imported as welded rather than seamless
Welded stainless steel pipes for drilling classified in Chapter 73 heading 7306, not seamless 7304.
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Import Tips & Compliance
• Verify API 5CT certification and exact wall thickness measurement; ensure threaded connections meet API standards; provide mill test certificates showing stainless steel composition and seamless manufacturing
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