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作为成品钢管,需要采取防腐措施。在多数情况下只进行外表防腐处理。但如果管内通过的是具有腐蚀性的介质,则需要对管子内表面进行防腐处理。“消极的”涂层法和“积极的”防腐法都是比较适合于持续防腐的措施,因而这两种方法往往是同时并用。所谓积极防腐法是指积极地研究腐蚀过程,从而采取相应措施,诸如用各种方法置备水、添加抑制剂、采取阴极防腐法等。钢管涂层的作用是不让腐蚀性介质直接接触管子表面,因而被看作是消极的防腐措施。
As a finished steel pipe, need to take anti-corrosion measures. In most cases only the appearance of anti-corrosion treatment. However, if the pipe passes corrosive media, the inner surface of the pipe needs to be treated with a preservative. Both “negative” coating methods and “aggressive” antisepsis methods are more suitable for continuous preservation and therefore both methods are often used in combination. The so-called positive anti-corrosion method is to actively study the corrosion process, and thus take appropriate measures, such as using various methods to prepare water, add inhibitors, cathodic corrosion protection and so on. The role of steel pipe coating is not to allow corrosive media to directly contact the surface of the pipe, which is considered as a negative anti-corrosion measures.