Sour Service Alloy Steel Line Pipe
Alloy steel welded pipe (24-inch OD) resistant to H2S corrosion for sour gas pipelines. HTS 7305.19.5000 covers its large circular cross-section and alloy composition for oil/gas line pipe use.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless sour service pipe
Manufacturing process (seamless vs welded) dictates 7304 heading.
If industrial process piping
Same pipe for refinery process lines (not transmission) becomes 7306 other tube.
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
• Certify per NACE TM0177 for sour service to support end-use as line pipe
• Label clearly as 'alloy steel'—Customs tests for elements like Ni, Mo
Related Products under HTS 7305.19.50.00
API 5L Grade X65 Alloy Steel Line Pipe
Welded alloy steel tube with circular cross section exceeding 406.4 mm OD, designed specifically for high-pressure oil and gas pipelines per API 5L X65 specifications. Classified under 7305.19.5000 as line pipe of alloy steel for pipeline transport, not other tubes.
X70 Alloy Steel Gas Pipeline Tube
High-strength welded alloy steel pipe (16-inch OD >406.4mm) for natural gas transmission lines, meeting API standards for sour service environments. Falls under HTS 7305.19.5000 due to its alloy composition and dedicated use in gas pipelines.
16-Inch Alloy Steel Oil Line Pipe
Welded alloy steel pipe with 16-inch (406.4+ mm) external diameter for crude oil gathering lines in refineries. HTS 7305.19.5000 applies to its circular cross-section, large size, welded closure, and alloy steel for oil pipeline applications.
High-Pressure Gas Transmission Alloy Pipe
Welded alloy steel pipe (20-inch OD) engineered for high-pressure natural gas trunklines with enhanced yield strength. Meets 7305.19.5000 as other alloy line pipe with exterior diameter exceeding 406.4 mm.
Corrosion-Resistant Alloy Line Pipe
Large-diameter (18-inch OD) welded pipe of duplex stainless alloy steel for offshore oil/gas flowlines. Classified in 7305.19.5000 as alloy steel line pipe with circular section >406.4mm for pipeline transport.