14-inch Duplex Stainless Steel Gas Gathering Line Pipe
Seamless 14-inch (355.6 mm) OD duplex stainless pipe for onshore gas gathering lines in shale plays. HTS 7304.11.0050 applies due to seamless stainless steel, line pipe function, and diameter limits for oil/gas infrastructure.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from carbon or alloy steel
Line pipe material other than stainless steel uses 7304.29 subheading, maintaining line pipe status but changing steel type.
If externally concrete-coated for submarine use
Concrete weight-coated pipes for subsea stability may classify differently based on composite construction.
If part of drilling rig catwalk systems
End-use integration into drilling machinery parts shifts to Chapter 84 under principal use doctrine.
Not sure which classification is right?
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Import Tips & Compliance
• Include fracture toughness data (e.g
• DWTT >85%) for high-pressure gathering lines to support tariff classification
• For FERC-jurisdictional lines, maintain origin traceability to comply with domestic content rules
• Separate internal flow coating from pipe classification; coatings often duty-free under 3209 if imported separately
Related Products under HTS 7304.11.00.50
12-inch Stainless Steel API 5L Line Pipe
Seamless stainless steel line pipe with 12-inch (304.8 mm) outside diameter, designed specifically for oil and gas pipelines per API 5L standards. It falls under HTS 7304.11.0050 due to its seamless construction, stainless steel material, and diameter between 114.3 mm and 406.4 mm, optimized for high-pressure hydrocarbon transport.
16-inch OD Stainless Steel Sour Service Line Pipe
Seamless duplex stainless steel pipe (e.g., 2205 grade) with 16-inch (406.4 mm) OD for sour gas pipelines, resistant to H2S corrosion. Classified in 7304.11.0050 for its seamless stainless steel construction and diameter specs tailored for oil/gas transport.
10-inch Stainless Steel Offshore Pipeline Riser
Seamless stainless steel riser pipe with 10-inch (254 mm) OD for offshore oil/gas platforms, connecting subsea wells to surface facilities. It matches HTS 7304.11.0050 as seamless stainless line pipe within the specified diameter range for pipeline applications.
8-inch Stainless Steel LNG Pipeline Export Pipe
Seamless 8-inch (203.2 mm) OD stainless steel pipe for cryogenic LNG export pipelines. Fits HTS 7304.11.0050 precisely as seamless stainless line pipe in the 114.3-406.4 mm diameter for gas transport.