9Cr-1Mo Seamless Alloy Line Pipe for High-Temp Gas Lines
9Cr-1Mo alloy steel seamless line pipe rated for elevated temperatures in gas pipelines, offering creep resistance and oxidation protection. Classified in HTS 7304.19.50 for its seamless alloy steel construction dedicated to gas pipeline service. Suitable for processing plant tie-ins and distribution lines.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for boiler, superheater, or condenser applications
High-temp tubes have dedicated headings separate from line pipe.
If smaller diameter hollow bars rather than pipe
Hollow profiles under 16mm wall may classify as semi-finished in Chapter 72.
If electric resistance welded (ERW)
Welded line pipe for pipelines uses welded headings.
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Import Tips & Compliance
• Include heat treatment records proving normalized and tempered condition for high-temp rating
• Declare exact alloy percentages (e.g
• 9% Cr, 1% Mo) to avoid stainless misclassification
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