Grade X42 Welded Gas Line Pipe 18 Inch Diameter
This API 5L X42 grade pipe has an 18-inch (457.2 mm) external diameter, longitudinally welded from nonalloy steel sheets for natural gas distribution pipelines. It withstands pressures up to 1000 psi and includes corrosion-resistant coatings. HTS 7305.12.1030 applies for its line pipe function, circular cross-section, and precise size specs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless and high-strength
High-grade seamless line pipes for oil/gas are in 7304, differentiated by absence of welds.
If spiral (helically) welded
Helically welded line pipes of nonalloy steel classify under 7305.22, not longitudinal.
If sold in bulk for casing
If used as protective casing in wells rather than transmission lines, it may go to other steel tubes in 7306.
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Import Tips & Compliance
• Label with exact grade (X42) and yield strength to match statistical reporting requirements
• Obtain pre-shipment inspection certificates for weld quality to expedite customs clearance
• Avoid misdeclaration of diameter; use caliper measurements certified by third-party labs
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