API 5L Grade B Seamless Steel Pipe 12-inch OD
A seamless steel tube of circular cross section made from nonalloy steel, with an outside diameter of 323.9 mm and wall thickness of 10 mm, suitable for oil and gas pipelines. It falls under HTS 7304.39.0062 due to its seamless construction, nonalloy steel material, circular profile exceeding 285.8 mm but not over 406.4 mm OD, and wall thickness under 12.7 mm. Commonly used in midstream energy infrastructure for transporting hydrocarbons.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded or electric resistance welded (ERW)
Welded pipes of nonalloy steel with similar dimensions shift to Chapter 73 heading 7306, as seamlessness defines the 7304 distinction.
If made of alloy steel instead of nonalloy
Alloy steel composition (e.g., >1.65% Mn or other alloys) moves it to 7304.59, differentiating from plain nonalloy steel in 7304.39.
If imported as finished boiler tubes
If specifically designed and certified for boiler/pressure vessel end-use, it may classify under gas turbine parts rather than generic tubes.
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Import Tips & Compliance
• Verify seamless certification via mill test reports (MTRs) to confirm classification under 7304, avoiding misclassification as welded pipes in 7306
• Ensure API 5L compliance documentation for oil/gas end-use; provide hydrostatic test results to customs for duty-free claims if applicable
• Watch for wall thickness measurement disputes—use precise caliper readings under 12.7 mm to prevent reclassification to thicker subheadings
Related Products under HTS 7304.39.00.62
ASTM A53 Grade B Seamless Steel Line Pipe 13-inch
Seamless carbon steel pipe, 330.2 mm OD, 9.5 mm wall, per ASTM A53 for structural and fluid conveyance in construction. Meets HTS 7304.39.0062 criteria: seamless, nonalloy steel, circular, 285.8-406.4 mm OD, wall <12.7 mm. Used in water transmission lines and piling.
Large Diameter Seamless Steel Casing Pipe 12.75-inch
Seamless nonalloy steel casing for oil well drilling, 323.85 mm OD, 10.3 mm wall, API 5CT compliant. Under HTS 7304.39.0062 for seamless circular tubes of iron/nonalloy steel, 285.8-406.4 mm OD, wall <12.7 mm. Protects wellbore in upstream oil production.
Seamless Pressure Piping Tube 16-inch OD
High-pressure seamless steel tube, 406.4 mm OD, 12.5 mm wall, ASTM A335 P5 equivalent but nonalloy for power plant steam lines. Classifies in 7304.39.0062: seamless, circular, nonalloy steel, exact upper OD limit, sub-12.7 mm wall. For utility boiler feedwater systems.
Seamless Steel Flowline Pipe 13.5-inch OD
Nonalloy seamless pipe for subsea flowlines, 342.9 mm OD, 10.8 mm wall thickness, sour service resistant. Fits 7304.39.0062: circular seamless tube of iron/nonalloy steel, 285.8-406.4 mm OD range, <12.7 mm wall. Used in offshore production manifolds.
Schedule 40 Seamless Carbon Steel Pipe 14-inch
Seamless nonalloy steel pipe with 355.6 mm OD, 11.1 mm wall thickness, conforming to ASTM A106 Grade B for high-temperature service in refineries. Classified in 7304.39.0062 for its circular cross section, OD between 285.8-406.4 mm, thin wall <12.7 mm, and seamless iron/nonalloy steel construction. Ideal for process piping in petrochemical plants.
Seamless Hydraulic Cylinder Tube 15-inch OD
Precision seamless nonalloy steel tube, 381 mm OD, 11.5 mm wall thickness, honed finish for hydraulic cylinder barrels in heavy machinery. Fits 7304.39.0062 as seamless iron/nonalloy steel pipe of circular section, OD 285.8-406.4 mm, thin wall. Essential for construction equipment cylinders.