Large Carbon Steel Butt Weld Elbow 400mm ID
A 90-degree elbow fitting made of nonalloy steel designed for butt welding, with an inside diameter of 400 mm, used in large-scale industrial piping systems for water, oil, or gas transport. It falls under HTS 7307.93.90.40 as a butt welding fitting of iron or nonalloy steel exceeding 360 mm ID and not specified elsewhere. These fittings ensure leak-proof connections in high-pressure applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel versions shift to 7307.99 as 'other' tube/pipe fittings of stainless steel, not nonalloy steel.
If inside diameter less than 360 mm
Smaller ID fittings of nonalloy steel for butt welding fall under 7307.92, the subheading for diameters under 360 mm.
If threaded or socket weld type instead of butt weld
Non-butt welding fittings like threaded elbows classify under 7307.19 as other iron/steel pipe fittings.
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Import Tips & Compliance
• Verify inside diameter exceeds 360 mm and confirm nonalloy steel composition via mill test certificates to avoid misclassification
• Ensure fittings meet ASTM A234 standards for welding compatibility; provide welding procedure specs in documentation
Related Products under HTS 7307.93.90.40
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