API 5L Grade X65 Seamless Alloy Steel Pipe
This seamless pipe made from high-strength alloy steel meets API 5L X65 specifications for oil and gas transmission lines. It features a circular cross-section with an outside diameter of 355.6 mm (14 inches) and a wall thickness of 25 mm, classifying it under HTS 7304.59.80.70 due to its alloy steel composition, seamless construction, and specified dimensions.
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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 pipes, even seamless with similar dimensions, classify under 7304.39 as stainless falls outside 'other alloy steel'.
If wall thickness under 19 mm
Pipes with the same OD range but thinner walls (less than 19 mm) fall into adjacent statistical suffixes within 7304.19.
If welded rather than seamless
Welded construction, regardless of alloy type, shifts classification to Chapter 73 heading 7306 for welded pipes.
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Import Tips & Compliance
• Obtain mill test certificates verifying alloy steel composition and seamless manufacturing to confirm HTS classification
• Ensure dimensional compliance with OD 285.8-406.4 mm and wall thickness ≥19 mm; common pitfall is incorrect measurement leading to wrong subheading
• For pipeline use, provide end-user certificates if required for duty exemptions or preferential tariff treatment
Related Products under HTS 7304.59.80.70
Seamless Alloy Steel Line Pipe for Sour Service
Designed for transporting sour gas in petroleum applications, this seamless pipe uses alloy steel resistant to hydrogen sulfide corrosion. With 16-inch OD (406.4 mm) and 22 mm wall thickness, it precisely matches HTS 7304.59.80.70 criteria for other alloy steel seamless tubes exceeding 285.8 mm OD.
High-Pressure Seamless Alloy Steel Pipe 14-inch OD
Seamless pipe engineered from nickel-alloyed steel for high-pressure refinery transfer lines, with 355.6 mm OD and 28 mm wall thickness. Classifies under HTS 7304.59.80.70 as other seamless alloy steel pipes in the specified large OD/thick wall range.
Seamless 16-inch Alloy Steel Structural Hollow Section
Large-diameter seamless hollow profile from manganese alloy steel used in offshore platform construction. Measuring 406 mm OD with 24 mm wall thickness, it fits HTS 7304.59.80.70 for seamless alloy steel tubes of circular section in the designated size range.
17-inch OD Alloy Steel Seamless Flowline Pipe
Seamless flowline pipe from low-alloy steel for subsea oil production risers, 17-inch (431.8 mm) OD but trimmed to 400 mm with 23 mm walls—actually 15.75-inch (400 mm) OD fitting range. Meets all criteria for HTS 7304.59.80.70.
Thick-Wall Seamless Alloy Steel Casing for Oil Wells
Heavy-duty casing pipe made from chrome-moly alloy steel for oil well drilling operations, featuring 13-3/8 inch OD (339.7 mm) and 20 mm wall thickness. Its seamless construction and alloy composition qualify it under HTS 7304.59.80.70 for large-diameter, thick-walled seamless steel tubes.
Chrome-Moly Seamless Pipe for Power Plant Boilers
P11 grade chrome-molybdenum alloy seamless pipe for superheater tubes in utility boilers, 14-inch OD (355.6 mm), 21 mm wall. Its alloy steel seamless nature and dimensions place it squarely in HTS 7304.59.80.70.