Seamless 4130 Alloy Steel Tubing for Aerospace
High-strength seamless tubes of 4130 chromoly alloy steel, OD less than 38.1 mm, used in aircraft hydraulic lines and structural components. Classified in 7304.59.80.10 for seamless alloy steel pipes of circular section and small diameter.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If further worked after seamless formation
Hollow drill bars or rods of alloy steel with additional processing fall under Chapter 72 worked shapes.
If of iron or non-alloy steel
Material change from alloy to non-alloy steel moves to different subheading within seamless tubes.
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Import Tips & Compliance
• Include aerospace material specs (AMS 6350) and heat treatment certificates; comply with ITAR if military end-use; measure OD precisely as exceeding 38.1mm shifts classification
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