88.9 mm OD Super Duplex Drill Pipe Heavy Wall
Super duplex stainless seamless drill pipe, 88.9 mm (3.5-inch) OD, wall >9.5 mm for ultra-corrosive subsea gas drilling. HTS 7304.22.0045 covers its stainless steel seamless drill pipe characteristics.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn with upset ends unfinished
Specific cold-finished drill pipe variants have statistical breaks.
If welded construction
All welded stainless tubes, including heavy wall, under 7306 series.
If for oilfield vehicle drilling rigs
Parts of specialized drilling vehicles classify under Chapter 87.
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
• Provide PREN value documentation (>40 for super duplex) to distinguish from standard stainless
• Ensure hydrostatic test reports confirm pressure ratings for drill pipe use
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