Heavy Wall N80 Nonalloy Tubing 4 Inch OD 14.0 lb/ft
Seamless tubing equivalent to N80 grade nonalloy steel, 101.6 mm OD, 12.7 mm wall for gas well production. Designed for corrosive environments in drilling operations. Classifies in 7304.29.5030 for its seamless nonalloy construction and thick walls exceeding 9.5 mm.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel material
Stainless variants for corrosive wells classify under 7304.29.10 as stainless steel oilfield tubing.
If supplied in coil form
Coiled tubing for continuous drilling operations falls under 7301.20 for seamless steel tube coils.
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Import Tips & Compliance
• Submit heat treatment records showing normalized/quenched properties for grade verification
• Bundle in protective shipping caps to prevent thread damage, which could trigger parts classification
• Avoid bulk packaging mislabeled as scrap—clearly mark as new oilfield tubing
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