Heat-Resistant Oil Casing Series – Product IntroductionI'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.

I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.Material InnovationI'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.
Engineered with Cr-Mo-V-Nb alloy steel and subjected to multi-stage heat treatment, this series maintains structural integrity at sustained temperatures up to 350°C. The microstructure refinement process enhances creep resistance while keeping hardness ≤22 HRC for sulfide stress cracking (SSC) resistance.

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• I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.Thermal Stability: Demonstrated 5,000+ hours service life in 300°C geothermal wells
• I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.Mechanical Strength: Yield strength 550-758 MPa (API L80-P110 grades)7 with collapse pressure ≥69 MPa
• I'm sorry, but it seems that there is no text provided for translation. Please provide the text you would like me to translate.Corrosion Protection: Optional internal Al-Si coating for H₂S/CO₂ environments

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• Complies with API 5CT PSL-3 standards for thermal cycling conditions
• Deployed in deep sour gas wells and steam injection recovery systems