Offshore Platform Riser Pipe
Seamless steel riser pipes for offshore oil platforms, non-alloy, circular >16" OD, <19 mm wall. HTS 7304.39.0076 classification for large seamless tubes. Connects subsea wells to surface facilities.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If internally clad with corrosion alloy
Lined riser pipes for sour service classify under 7305.
If with buoyancy modules attached
Complete riser assemblies become drilling rig parts.
If imported installed on floating structures
Piping integral to oil platforms/rigs may classify as floating structures.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• API 5L or 5CT specs mandatory with NDT reports
• Anode attachment provisions may affect classification
• Consider temporary importation under TIB for platform installation
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.
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.
Extra-Large Seamless Boiler Tube SA-106
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Heavy Wall Seamless Steel Pile Pipe
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Seamless Steel Duct Pipe for Ventilation
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