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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness 12.7 mm or less
Thinner walls fall under separate statistical suffix for structural pipes with OD 38.1-114.3 mm.
If welded rather than seamless
Welded pipes of non-alloy steel with similar dimensions classify in Chapter 73 heading for welded tubes.
If made from alloy steel instead of non-alloy
Alloy steel composition (e.g., >0.3% specific elements) moves to 'other alloy' subheading.
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Import Tips & Compliance
• Verify seamless certification via NDT reports (ultrasonic/hydrostatic testing) as required for API 5L specs to avoid reclassification
• Include mill test certificates (MTC) showing chemical composition and mechanical properties for non-alloy steel confirmation
• Measure OD and wall thickness precisely; tolerances under 12.7 mm wall shifts to thinner subheadings, risking underpayment penalties
Related Products under HTS 7304.39.00.32
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.
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.
Heavy Wall Seamless Steel Casing 2.375-inch OD 0.545-inch Wall
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Schedule 160 Carbon Steel Seamless Pipe 3.5-inch OD
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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.