Welded Carbon Steel Pipe for Water Main
Large-diameter welded pipe made from nonalloy steel, with external diameter over 406.4 mm, used in municipal water distribution systems. Classified under 7305.39.1000 due to its welded construction, circular cross-section, and iron/nonalloy steel material. Exceeds the size threshold for smaller pipes in other headings.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless rather than welded
Seamless tubes fall under heading 7304, regardless of diameter, based on manufacturing process.
If externally clad with other metal like zinc
Clad or plated pipes shift to 7306 due to surface treatment changing material classification.
If imported as gas ducting components
Specific end-use in gas turbines reclassifies under Chapter 84 machinery parts.
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Import Tips & Compliance
• Verify weld seam integrity and hydrostatic test certificates to meet API or ASTM standards for pressure piping
• Include mill test reports (MTRs) showing chemical composition confirming nonalloy steel status
• Avoid misclassification as line pipe by ensuring no oil/gas transport markings or specs
Related Products under HTS 7305.39.10.00
Large Diameter Welded Steel Ventilation Duct Pipe
Welded nonalloy steel pipe with OD exceeding 406.4 mm, used for industrial HVAC exhaust systems. Covered by 7305.39.1000 as other welded circular tubes not for boilers or pressure vessels. Plain ends suitable for flanged connections.
Carbon Steel Large Welded Sewer Pipe
Welded pipe from nonalloy steel with OD >406.4 mm, designed for sanitary sewer mains with protective bituminous coating. Classifies in 7305.39.1000 as other large welded circular pipes of iron/nonalloy steel. Excludes specialized boiler tubes.
Welded Steel Pipe for Industrial Chimney Stack
Large OD welded nonalloy steel pipe sections for exhaust stacks on factories, >406.4 mm diameter. Falls under 7305.39.1000 as other circular welded tubes of iron/nonalloy steel. Designed for bolted sectional assembly.
Nonalloy Large Diameter Penstock Pipe
Welded nonalloy steel pipe OD >406.4 mm for low-pressure penstocks in small hydro plants. 7305.39.1000 covers these other welded circular steel tubes. Below pressure ratings for boiler tubes.
Welded Steel Pipe for Grain Elevator Legs
Nonalloy steel welded large-diameter pipe (>406.4 mm OD) forming vertical legs for agricultural silos. Classified 7305.39.1000 as other welded circular steel tubes not structural steel.
Industrial Water Cooling Tower Basin Pipe
Welded nonalloy steel pipe OD exceeding 406.4 mm for water distribution in cooling tower basins. 7305.39.1000 for large welded circular tubes of iron/steel. Corrosion-resistant for wet environments.