9-5/8 inch 53.5# Q-125 Duplex Stainless Casing
Duplex stainless steel (e.g., 2205 grade) seamless casing pipe, 9-5/8 inch OD (244.5 mm), 53.5 lb/ft, 14.1 mm wall thickness, premium Q-125 grade with EUE threading for sour gas service. Meets 7304.24.30.40 criteria: stainless, seamless, drilling casing, proper OD range, thick wall construction.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard carbon steel for less corrosive environments
Carbon steel casing for non-corrosive service uses 7304.29.10 instead of stainless subheading.
If wall thickness under 12.7 mm
Thinner wall stainless casing shifts to 7304.24.50 subheading despite same OD/material.
If imported in continuous welded form
Welded stainless tubes/pipes classified under 7306.40 regardless of drilling application.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Require NACE MR0175/ISO 15156 certification for sour service; measure actual wall thickness at multiple points; ensure duplex stainless PMI testing documentation
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