Seamless Steel Structural Pipe ASTM A106
ASTM A106 Grade B seamless carbon steel pipe for structural support in construction, circular cross-section over 16 inches diameter, wall under 19 mm thick. Fits HTS 7304.39.0076 as other seamless pipes of non-alloy steel. Provides high tensile strength for frameworks and piling.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of stainless steel
Stainless steel seamless pipes (iron-nickel-chromium alloys) classify under 7304.90 regardless of size.
If produced by welding
Welded structural pipes of non-alloy steel move to heading 7306, which covers welded tubes/pipes.
If specifically for use as saw arbor tubes
Principal use as machine tool components (not bored) shifts to 7308 for specialized steel structures.
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Import Tips & Compliance
• Include ASTM A106 material certificates confirming seamless manufacture and grade specifications
• Avoid common pitfall of declaring as 'alloy' if carbon steel only - stick to non-alloy chemical analysis
• For large shipments, consider bonded warehouse entry to manage duties on high-volume structural imports
Related Products under HTS 7304.39.00.76
API 5L Grade B Seamless Steel Line Pipe
Large-diameter seamless steel pipe used for oil and gas pipelines, made from non-alloy steel with circular cross-section, outside diameter over 406.4 mm and wall thickness under 19 mm. It falls under HTS 7304.39.0076 as a seamless tube/pipe of iron or non-alloy steel, not suitable for boring into tubes. This classification applies to precision-formed hollow profiles for high-pressure fluid transport.
Large Diameter Seamless Steel Casing Pipe X52
Seamless steel casing for oil well drilling, non-alloy steel, circular cross-section exceeding 16 inches OD with wall thickness less than 19 mm. Classified under 7304.39.0076 for seamless tubes/pipes of iron/non-alloy steel not for boring. Used to line boreholes and protect against collapse in petroleum extraction.
Extra-Large Seamless Boiler Tube SA-106
ASME SA-106 seamless carbon steel tubes for high-temperature boiler service, OD exceeding 406.4 mm, wall thickness <19 mm, non-alloy steel. Under HTS 7304.39.0076 as other seamless circular pipes. Designed for pressure and heat resistance in power generation.
Heavy Wall Seamless Steel Pile Pipe
Seamless non-alloy steel pipe for offshore piling foundations, circular cross-section >16" OD with wall <19 mm. HTS 7304.39.0076 covers these large seamless tubes for marine construction. Meets ASTM A252 Grade 3 for deep foundation support.
Seamless Steel Duct Pipe for Ventilation
Large seamless non-alloy steel pipes for industrial HVAC ducting systems, OD >406.4 mm, wall thickness <19 mm. Classifies under HTS 7304.39.0076 as other seamless circular steel tubes. Used in heavy industrial air handling where welded seams undesirable.
Large OD Seamless Steel Mechanical Tubing
Cold-finished seamless mechanical tubing from non-alloy steel, exceeding 16 inches OD with thin walls <19 mm for machinery frames. HTS 7304.39.0076 for other large seamless pipes. Precision tolerances for rotating equipment housings.