Alloy Steel Welded Pipe for Natural Gas Transmission
A longitudinally welded pipe of alloy steel with external diameter exceeding 406.4 mm, engineered for high-pressure natural gas lines. Classified under HTS 7305.31.60 for its other welded, circular cross-section design in large sizes. Essential for long-distance gas pipeline networks.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not longitudinally welded (e.g., spiral or helical)
Welding method changes subheading; non-longitudinal welds fall under broader 'other welded' in 7305.39.
If external diameter 406.4 mm or less
Size threshold defines heading; smaller OD pipes move to 7306, even if identical material and welding.
If for casing or tubing in oil/gas wells
Specific well application (casing/tubing) uses 7305.21 regardless of welding, prioritizing end-use over general pipe.
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Import Tips & Compliance
• Include hydrostatic test reports confirming pressure ratings suitable for gas service to support classification
• Label as 'longitudinally welded' on commercial invoice to prevent confusion with spiral-welded pipes in other subheadings
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