Heavy-Wall Longitudinally Welded Alloy Pipe for Structural Supports
This thick-walled, longitudinally welded alloy steel pipe over 16 inches in diameter is used for structural columns in bridges and offshore platforms. It qualifies for HTS 7305.31.60.90 as an other welded tube of alloy steel with the specified large circular cross-section. High-strength alloy enhances load-bearing capacity.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported in unfinished state for further fabrication
Unfinished structures or fabricated steel articles fall under 7308.
If welded by methods other than longitudinal (e.g., submerged arc circumferential)
Non-longitudinal welding methods shift to other welded subheadings in 7305.39.
If for cold-drawn seamless construction
Cold-formed seamless alloy tubes over 406.4mm classify under 7304.51.
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Import Tips & Compliance
• Provide engineering drawings showing wall thickness and weld type for valuation and classification
• Certify compliance with AWS D1.1 welding standards to prevent reclassification as unfinished goods
Related Products under HTS 7305.31.60.90
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Alloy Steel Large Welded Pipe for Bridge Pile Foundations
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Longitudinally Welded Alloy Steel Pipe for Oil Pipelines
This large-diameter pipe, with an external diameter over 406.4 mm, is longitudinally welded from alloy steel sheets and used in oil and gas transmission pipelines. It falls under HTS 7305.31.60.90 as it meets the criteria for other longitudinally welded tubes of alloy steel with circular cross-section exceeding 16 inches in diameter. The alloy composition provides enhanced strength and corrosion resistance for high-pressure applications.