L80 Type 9 Cr13 Casing
Nonalloy steel L80 Type 9 casing with Cr13 martensitic composition for sour service environments in oil/gas drilling. Fits HTS 7306.29.60 as iron/nonalloy tubing despite chromium content under alloy thresholds. Used to isolate formations in corrosive wells.
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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 chromium exceeds nonalloy limits
Elevated alloying elements reclassify to alloy steel tubing.
If seamless cold-drawn
Precision seamless tubing not for drilling goes to 7304.
If sold as tube fittings
Fittings and flanges for tubes classify under 7307.
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Import Tips & Compliance
• Certify NACE MR0175 compliance for sour service to support classification claims
• Detail upset vs non-upset ends in descriptions for accurate duty assessment
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