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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If outside diameter exceeding 406.4 mm
Larger OD seamless nonalloy tubes (e.g., 18-inch) move to 7304.29 subheading based on size limits.
If welded casing pipe
Welded oilfield casing classifies in 7306.19, with process determining heading over end-use.
If as parts of oil drilling rigs
If imported specifically as rig components with machining, it may classify under 8431 machinery parts.
Not sure which classification is right?
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Import Tips & Compliance
• Submit API 5CT MTRs and drift test reports; critical for proving casing specs without duty disputes
• Declare OD in mm (323.85) accurately—NPS approximations can lead to OD range errors
• Avoid bundling with couplings; separate entries prevent fitting classification under 7304.29 or 7307
Related Products under HTS 7304.39.00.62
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.
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.
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.