ASTM A234 WP11 Large Diameter Tee
A straight tee fitting of alloy steel (ASTM A234 WP11) for butt welding with 400 mm inside diameter, used in high-temperature petrochemical pipelines. Classified under HTS 7307.93.90 as a butt welding fitting with internal diameter over 360 mm. Essential for branching large industrial gas lines.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If inside diameter under 360 mm
Smaller diameter butt welding fittings have separate statistical provisions.
If flange-type connection
Flanged fittings are excluded from butt welding category.
If imported in seamless tube form before forming
Unfabricated tubes classify under Chapter 73 headings for tubes rather than fittings.
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Import Tips & Compliance
• Include heat treatment records proving compliance with ASTM standards to satisfy technical verification
• Declare exact alloy composition to distinguish from carbon steel rates and avoid anti-dumping scrutiny
• Use proper packing to prevent distortion during transit, as customs may inspect for damage-related reclassification
Related Products under HTS 7307.93.90
Carbon Steel 24-Inch Butt Weld Elbow
A 90-degree elbow fitting made from carbon steel designed for butt welding, featuring an inside diameter of 610 mm for large-scale piping systems. It falls under HTS 7307.93.90 due to its large internal diameter exceeding 360 mm and construction as a butt welding fitting of iron or steel. Commonly used in industrial water supply and sewage networks.
24-Inch Carbon Steel Reducing Elbow
A reducing 90-degree elbow transitioning from 24-inch to 18-inch diameter, carbon steel construction for butt welding with minimum ID of 360 mm. HTS 7307.93.90 applies to its large inside diameter and butt weld design for oil & gas pipelines. Allows size transitions in large conveyance systems.
36-Inch Steel Butt Weld Cross Fitting
Four-way cross fitting of carbon steel for butt welding, 914 mm inside diameter for massive water distribution mains. Falls under HTS 7307.93.90 for extra-large butt welding pipe fittings of iron or steel. Used in municipal infrastructure projects.
Alloy Steel 20-Inch Equal Tee
Equal tee fitting (508 mm ID) made from ASTM A234 WP5 alloy steel for butt welding in power plant steam lines. HTS 7307.93.90 covers its large diameter and butt weld fitting status. Withstands high temperatures and pressures.
Carbon Steel 48-Inch 45-Degree Elbow
Long radius 45-degree elbow of carbon steel, 1,219 mm inside diameter for butt welding in slurry pipelines. Classified HTS 7307.93.90 for oversized butt weld fittings. Ideal for mining and tailings applications.
Large Diameter Steel Cap End
Butt welding cap closure for 24-inch (610 mm ID) steel pipes, carbon steel construction for pipeline termination. HTS 7307.93.90 due to large internal diameter and butt weld fitting type. Used to seal oil transmission lines.