"4-1/2\" 12.75
4-1/2 inch OD, 12.75 lb/ft P110 grade welded stainless steel tubing for high-pressure oil drilling. Features welded construction suitable for sour service environments. Classified under 7306.21.8050 as other welded stainless steel drill tubing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If outside diameter exceeds 114.3 mm
Larger OD welded stainless drill tubing has separate statistical breakouts.
If produced by seamless process
Manufacturing method (seamless vs welded) determines primary heading.
If integral to gas turbine assemblies
Tubing designed for turbines classified under Chapter 84 machinery parts.
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
• Hardness testing reports (Rockwell C22-32) essential for P110 grade verification
• Collapse and burst test data may be requested by customs for safety classification
• Use ISPM-15 compliant wood thread protectors to avoid fumigation issues
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