X70 Grade Seamless Alloy Line Pipe for Gas Pipelines
X70 grade seamless alloy steel pipe engineered for natural gas transmission pipelines, offering high yield strength and resistance to sour service environments. Classified under HTS 7304.19.50 due to its seamless construction from other alloy steel (non-stainless) tailored for gas pipeline applications. It meets rigorous industry standards for long-distance energy transport.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel line pipes have a dedicated subheading separate from other alloy steel.
If for other seamless alloy tubes not used as line pipe
Classification shifts if not proven for oil/gas pipeline end-use, moving to general tubes.
If longitudinally submerged arc welded (LSAW)
Welded construction changes the heading from seamless to welded line pipes.
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Import Tips & Compliance
• Include hydrostatic test certificates and chemical analysis reports to prove alloy content and suitability for sour gas service
• Label pipes clearly with grade markings and dimensions to facilitate customs verification as line pipe
• Avoid common pitfalls by distinguishing from drill pipe, which requires different end-use declarations
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