Large Diameter Alloy Steel Pipe for Water Transmission Mains
Longitudinally welded alloy steel pipe over 406.4 mm OD, designed for durable water supply trunk lines in municipal systems. HTS 7305.31.60 applies to its circular, large-scale welded construction from alloy steel. Corrosion-resistant for long-term infrastructure use.
Import Duty Rates by Country of Origin
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 longitudinally welded but with thicker walls for high-pressure
Wall thickness or specific pressure specs may trigger statistical suffixes, but base remains 7305.31; check for precision variants.
If seamless and of boiler/pressure vessel quality
Seamless construction for boilers shifts to 7304, as Chapter notes prioritize manufacturing method over end-use.
If imported as fabricated pipe supports or fittings
If assembled into structures like pipe bridges, it becomes 'other articles of iron/steel' in 7326, not tubes.
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Import Tips & Compliance
• Certify compliance with AWWA C200 standards for water pipe to facilitate duty assessment and regulatory approval
• Document external diameter with caliper measurements or manufacturer specs to confirm >406.4 mm threshold
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