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本文介绍兰州石化分公司4万吨/年裂解炉中材质为25Cr-35Ni+Nb+MA与F304H,20Cr-33Ni+Nb与Incoloy800H的管件钨极氩弧焊焊接工艺和措施。
This article describes the Lanzhou Petrochemical Company 40,000 tons / year pyrolysis furnace material 25Cr-35Ni + Nb + MA and F304H, 20Cr-33Ni + Nb and Incoloy800H TIG welding process and measures.