Cold-Drawn 4330V Modified Alloy Bar 290mm
4330V modified alloy steel bar cold-drawn 290 mm for offshore oil rig leg forgings. HTS 7228.50.50.70 classification for large diameter cold-finished other alloy steel bars.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded into rig tubulars
Welded tubes/pipes from these bars go to Chapter 73, not solid bar forms.
If heat-resisting steel per note (g)
Specific heat-resisting alloys have dedicated codes before general category.
If rectangular hot-rolled
Shape and thermal history determine precise 7224/7228 subheading.
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Import Tips & Compliance
• Vanadium-modified grades need specific callouts in chemistry certs for alloy verification
• Corrosion data helpful for oil/gas applications but not classification-defining
• Rig-size bars may need mill test reports for each heat/strand due to critical service
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