9-7/8" 43.5 ppf Q125 Casing for Geothermal
Ultra-high strength Q125 grade seamless alloy steel casing, 9-7/8" OD (250.8 mm), 43.5 ppf, 11.8 mm wall, integral threaded joints for geothermal and high-temp oil wells. Seamless construction for drilling integrity. HTS 7304.29.31.30 due to alloy steel, coupled, thin-wall specs.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If having wall thickness 12.7 mm or thicker
Thicker walls exclude from the <12.7 mm thin-wall category.
If lined with refractory ceramic
Ceramic-lined pipes for extreme corrosion classify under Chapter 69.
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
• Certify high-yield strength with tensile test reports; declare geothermal end-use if applicable for preferences
• Pitfall: confusing with production tubing diameters
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