API 5L Grade B Seamless Line Pipe
Seamless line pipe conforming to API 5L Grade B standards, with 152.4 mm outside diameter and 22 mm wall thickness, used for oil and gas transmission pipelines. Made from nonalloy steel for structural integrity under pressure. Fits HTS 7304.39.0044 for its seamless iron/nonalloy steel construction, circular profile in the 114.3-190.5 mm OD range, and thick 19+ mm walls.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for drilling or casing in oil/gas wells
Casing, tubing, and drill pipe for oil/gas applications have dedicated headings in 7304/7305 regardless of dimensions.
If cold-drawn or finished
Cold-drawn seamless pipes classify under 7304.31 if precision-finished, separate from hot-finished tubes.
If welded construction
Welded line pipe of nonalloy steel uses heading 7306, often with lower duties for certain grades.
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Import Tips & Compliance
• Provide API 5L certification and hydrostatic test results; lack of seamless proof risks reclassification to welded line pipe
• Confirm wall thickness exceeds 19 mm via caliper measurements; borderline cases require customs lab verification
• Declare exact OD to avoid overlap with 7304.39.0040 (≤114.3 mm) or 7304.39.0048 (≥190.5 mm)
Related Products under HTS 7304.39.00.44
Seamless ASTM A106 Grade B Steel Pipe
A seamless carbon steel pipe manufactured to ASTM A106 Grade B specifications, featuring a circular cross section with an outside diameter of 168.3 mm and wall thickness of 25 mm. It is designed for high-temperature service in piping systems for oil refineries and power plants. Classified under HTS 7304.39.0044 due to its seamless construction, nonalloy steel material, specified diameter range exceeding 114.3 mm but less than 190.5 mm, and wall thickness of 19 mm or more.
Heavy Wall Seamless Boiler Tube
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Thick-Wall Seamless Structural Steel Pipe
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High-Pressure Seamless Hydraulic Cylinder Tube
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Extra Heavy Seamless Steel Casing
Seamless nonalloy steel casing for structural piling, 159 mm OD and 20 mm wall thickness for foundation support in construction. Thick walls provide exceptional collapse resistance. Classifies under HTS 7304.39.0044 as seamless circular iron/nonalloy steel tube with OD 114.3-190.5 mm and ≥19 mm wall.