API 5L Grade B Carbon Steel Line Pipe 4-inch
This is a welded carbon steel pipe conforming to API 5L Grade B specifications, designed specifically for use in oil and gas pipelines with an outside diameter of 114 mm. It falls under HTS 7306.19.10.10 as it is line pipe of iron or nonalloy steel, welded construction, and OD not exceeding 114.3 mm. The pipe is suitable for transporting natural gas or crude oil in midstream 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 line pipe shifts to 7306.30 due to alloy composition exceeding nonalloy limits.
If sold as casing or tubing rather than line pipe
Casing/tubing for oil/gas wells (not pipelines) classified under 7304 based on end-use, not longitudinal seams.
If outside diameter exceeds 114.3 mm
Larger OD line pipe falls under statistical suffixes for bigger sizes in the same heading.
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Import Tips & Compliance
• Verify API 5L certification and mill test reports (MTRs) to confirm compliance with line pipe standards; customs may require them for classification
• Ensure accurate measurement of outside diameter (must ≤114.3 mm) and declare as nonalloy steel to avoid reclassification
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