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经过调研对进口炉管有了较深入的了解,在此基础上试制了φ56mm ZG4Cr25Ni35WNb裂解炉管。其表面质量、金相组织、机械性能及生产工艺经专家评审认为:已达到进口炉管的水平,可批量生产。
After investigation of the imported tube has a more in-depth understanding, on this basis trial production of φ56mm ZG4Cr25Ni35WNb cracking furnace tube. The surface quality, metallographic structure, mechanical properties and production process expert assessment that: has reached the level of imported tube, mass production.