Cauterization of steel store jar for oil was introduced including caused reason and mechanism,and concept on the protection with dope and cathode was put forward.

• 文章叙述了炼油厂二套常减压装置加工混合原油主要设备、管线的腐蚀情况，着重研究、分析了其腐蚀机理和原因，并提出了具体防护措施。