3-1/2 Inch L80 Type 1 Drilling Casing
Seamless L80 Type 1 nonalloy steel tubing with 88.9 mm OD and 5.5 mm wall thickness, serving as casing in shallow oil drilling to protect the wellbore. Meets HTS 7304.29.20.10 criteria for seamless iron/nonalloy steel casing under 215.9 mm OD and thin walls.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically designated as drill pipe
Drill pipe (with tool joints) has separate provisions from casing/tubing.
If for mechanical/structural applications
Non-drilling uses treated as general-purpose welded or seamless tubes.
If imported in threaded and coupled sets
Threaded/coupled tube/pipe combinations classified under 7307.
Not sure which classification is right?
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Import Tips & Compliance
• Label clearly as 'casing for oil/gas drilling' to distinguish from tubing; customs may reclassify ambiguous descriptions
• Provide chemical composition analysis to confirm nonalloy status (max 1.65% Mn, etc.)
• Avoid bulk packaging over 20 tons per container to prevent damage claims
Related Products under HTS 7304.29.20.10
114.3 mm x 6.35 mm J55 Surface Casing
Standard J55 seamless surface casing string with 114.3 mm OD and exactly 6.35 mm wall, protecting shallow formations in oil drilling. Perfect fit for HTS 7304.29.20.10 specifications.
2-3/8 Inch E75 Tubing Casing
Dual-purpose E75 seamless pipe used as both tubing and liner casing, OD 60.3 mm, wall 4.8 mm in slimhole operations. HTS 7304.29.20.10 covers this as oil/gas drilling casing.
API 5CT J55 Oil Well Casing Pipe
Seamless steel casing pipe made from J55 grade nonalloy steel, with an outside diameter of 114.3 mm and wall thickness of 6.5 mm, designed for oil well drilling to line the borehole and prevent collapse. It falls under HTS 7304.29.20.10 as seamless casing of iron or nonalloy steel with OD less than 215.9 mm and wall thickness less than 12.7 mm.
4-1/2 Inch N80 Casing for Gas Wells
Seamless N80 nonalloy steel casing with 114.3 mm OD and 7.0 mm wall thickness, used to stabilize gas well bores during drilling operations. Classified under HTS 7304.29.20.10 due to its seamless construction, nonalloy steel material, and specified dimensions for oil/gas drilling applications.
2-7/8 Inch K55 Oilfield Casing
Compact seamless K55 nonalloy steel casing pipe, OD 73.0 mm and wall 5.2 mm, ideal for slimhole oilfield drilling operations. Falls under HTS 7304.29.20.10 for its small diameter seamless casing specs in oil/gas applications.
5 Inch P110 High-Pressure Casing
Seamless P110 grade nonalloy steel casing with 127 mm OD and 9.2 mm wall thickness for high-pressure oil zones. Precisely matches HTS 7304.29.20.10 as seamless nonalloy drilling casing under size limits.