API 5L Grade B Seamless Steel Line Pipe 4-inch OD
This seamless steel tube, made from nonalloy steel with an outside diameter of 114.3 mm or less, is specifically designed as line pipe for oil and gas pipelines, meeting API 5L Grade B standards for strength and durability. It falls under HTS 7304.19.10.20 due to its seamless construction, nonalloy steel material, and use in oil or gas transport with OD not exceeding 114.3 mm. Ideal for onshore gathering lines and distribution networks.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded instead of seamless
Welded line pipes of circular cross-section shift to 7304.31, as seamlessness defines the primary 7304.19 heading.
If used for drilling casings or tubings, not pipelines
Oil/gas well casings and tubings classify under Chapter 73 heading 7306 for specific downhole applications, not line pipe transport.
If made of stainless alloy steel
Alloy steel composition (e.g., stainless) moves it out of nonalloy 'other' line pipe to 7304.59 for stainless variants.
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Import Tips & Compliance
• Verify API 5L certification and provide mill test reports (MTRs) to confirm seamless construction and chemical composition for nonalloy steel
• Ensure outside diameter measurement documentation matches ≤114.3 mm to avoid reclassification to larger diameter categories
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