X70 Alloy Steel LSAW Pipeline Tube
High-strength X70 grade alloy steel tube produced via longitudinal submerged arc welding, with external diameter over 16 inches (406.4 mm), tailored for natural gas transmission lines. Its alloy composition provides superior yield strength for deepwater and high-pressure applications. Falls under HTS 7305.11.50.00 as LSAW line pipe of alloy steel for oil/gas pipelines.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If produced by other welding methods (e.g., spiral welded)
Only longitudinally submerged arc welded pipes qualify under 7305.11; other welded types use 7305.19.
If imported as gas transmission line components with fittings
When assembled into pipeline systems with valves/pumps, may classify under gas-specific machinery headings.
If for industrial process piping applications
If not marketed or designed for oil/gas pipelines, shifts to other large-diameter welded alloy tubes.
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Import Tips & Compliance
• Include hydrostatic test certificates proving pressure ratings suitable for pipeline service to support line pipe classification
• Label shipments clearly with 'Line Pipe for Oil/Gas Pipelines' to prevent reclassification as general structural tubing
• Monitor anti-dumping duties on alloy steel pipes from specific countries like China or South Korea via Commerce Department scopes
Related Products under HTS 7305.11.50.00
API 5L Grade X65 LSAW Alloy Steel Line Pipe
This longitudinally submerged arc welded (LSAW) line pipe is made from alloy steel and conforms to API 5L Grade X65 specifications, featuring a circular cross-section with an external diameter exceeding 406.4 mm. It is designed specifically for high-pressure oil and gas pipelines, ensuring strength and durability in demanding subsurface environments. Classified under HTS 7305.11.50.00 due to its alloy steel composition, LSAW construction, and use in oil/gas line pipe applications.
ASTM A691 Alloy Steel LSAW Line Pipe
Longitudinally submerged arc welded pipe per ASTM A691 specifications, made from alloy steel grades like 1-1/4Cr, with OD exceeding 406.4 mm for sour gas service in oilfield pipelines. The alloy enhances corrosion resistance in harsh environments. HTS 7305.11.50.00 applies to its LSAW construction and alloy steel line pipe designation.
Grade L485 Alloy Steel LSAW Oil Pipeline
ISO 3183 L485 grade alloy steel pipe, longitudinally submerged arc welded, external diameter 24-48 inches for crude oil trunklines. Provides enhanced toughness for arctic and seismic-prone pipeline routes. Classified in 7305.11.50.00 for alloy LSAW line pipe.
High-Yield X80 LSAW Alloy Line Pipe
X80 high-yield strength alloy steel line pipe, LSAW fabricated with circular cross-section >406.4 mm OD for long-distance gas pipelines. Alloying elements improve fracture toughness for extreme conditions. HTS 7305.11.50.00 due to alloy steel LSAW line pipe specs.
Sour Service Alloy LSAW Gas Line Pipe
Alloy steel LSAW pipe engineered for sour (H2S-containing) gas service, with >16-inch OD and PSB-resistant microstructure per API 5L Annex H. Used in petrochemical gathering lines. Fits 7305.11.50.00 as large-diameter alloy LSAW line pipe.