ASTM A106 Grade B Seamless Pipe 4.5-inch OD 0.531-inch Wall
High-temperature service seamless pipe, 114.3 mm OD with 13.5 mm wall, non-alloy carbon steel per ASTM A106 specs. Fits HTS 7304.39.0032 precisely due to circular cross-section, OD range 38.1-114.3 mm, and wall over 12.7 mm. Essential for process piping in power plants and petrochemical facilities.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn/hardened condition
Cold-formed tubes classify separately from hot-finished seamless pipes.
If other welded construction
Welded versions of similar spec pipes move to welded headings.
If sold as threaded pipe fitting set
Threaded or socket welded configurations classify as tube fittings, not plain tubes.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Submit heat analysis reports confirming carbon content <0.3% to prove non-alloy status
• Avoid bundling with fittings; sets may classify under 7307 as tube fittings rather than individual pipes
• Check for anti-dumping orders on specific grades/sources; Chinese A106 often under AD/CVD scrutiny
Related Products under HTS 7304.39.00.32
API 5L Grade B Seamless Steel Pipe 4-inch OD 0.5-inch Wall
A seamless carbon steel pipe with 101.6 mm OD and 12.8 mm wall thickness, made from non-alloy steel for oil and gas transmission lines. It falls under HTS 7304.39.0032 due to its circular cross-section, OD between 38.1-114.3 mm, and wall thickness over 12.7 mm. Commonly used in high-pressure pipelines requiring structural integrity.
Schedule 80 Seamless Carbon Steel Pipe 3-inch OD
Heavy-duty seamless pipe with 88.9 mm OD and 14.3 mm wall thickness, Schedule 80 rating for industrial pressure applications. Classified under HTS 7304.39.0032 for its non-alloy steel construction, circular profile, and thick walls exceeding 12.7 mm. Used in refineries, chemical plants, and structural supports.
Heavy Wall Seamless Steel Casing 2.375-inch OD 0.545-inch Wall
Seamless non-alloy steel casing pipe for oil well applications, 60.3 mm OD and 13.8 mm wall thickness. Meets HTS 7304.39.0032 criteria for circular seamless tubes of iron/nonalloy steel with specified OD and thick walls. Provides structural support in drilling operations.
Schedule 160 Carbon Steel Seamless Pipe 3.5-inch OD
Extra heavy wall seamless pipe, 88.9 mm OD with 17.5 mm wall thickness for extreme pressure service. Classifies in HTS 7304.39.0032 as non-alloy steel circular tube exceeding dimension thresholds. Used in hydraulic cylinders and high-pressure manifolds.
ASME B36.10 Thick Wall Seamless Line Pipe 114.3 mm OD
Standard dimension seamless pipe at upper OD limit of 114.3 mm with 15 mm wall, non-alloy steel per ASME specs. Perfect match for HTS 7304.39.0032 thick wall circular tubes. Applied in offshore platform risers and flowlines.