Heavy Wall 4-inch Stainless Oilfield Drill Stem
Seamless 4-inch OD stainless steel heavy wall drill pipe (>9.5 mm) used as drill stem in rotary oil drilling rigs. Precisely matches HTS 7304.22.0045 for small OD stainless drill pipe specs.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other alloy steel, not stainless
Drill pipe of alloy but non-stainless steel under separate alloy heading.
If not suitable for drilling use
General seamless small OD stainless tubes classify as 'other'.
If other drilling machinery parts
Non-pipe drilling components fall under Chapter 84 drilling machines.
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
• Use API upset designations in invoices to differentiate from plain-end tubing
• Batch test for wall thickness uniformity—variations >0.5mm trigger audits
• Avoid generic 'steel tube' descriptions; specify 'stainless drill pipe oil/gas'
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