3-1/2 Inch P110 Stainless Steel Threaded Casing
High-pressure P110 grade seamless stainless steel casing, 3-1/2 inch OD (88.9 mm), wall thickness 7.72 mm, with premium EUE (External Upset End) threaded couplings. Applied in deep oil/gas wells for structural support. Meets HTS 7304.24.30.10 criteria: stainless, seamless, casing use, small OD, thin wall.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not threaded or coupled
Uncoupled stainless casing lacks the specific threading feature, falling under the plain ends provision.
If for general industrial or mechanical applications
If not specifically designed for oil/gas drilling, seamless stainless tubes classify under other tube headings.
If welded rather than seamless
Welded stainless steel casing construction changes from 7304.2x seamless to 7304.5x welded categories.
Not sure which classification is right?
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Import Tips & Compliance
• Submit detailed dimensional drawings and thread profile certifications for customs verification
• Maintain traceability documentation from steel mill to finished pipe for quality assurance claims
Related Products under HTS 7304.24.30.10
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4-1/2 Inch N80 Type 304 Stainless Casing
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2-7/8 Inch L80 Type 316L Stainless Casing
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5 Inch J55 Stainless Steel Coupled Casing
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