Is Corrugated Culvert Pipe to be Anti-corrosion? What Factors should be Paid Attention to in Anti-corrosion?

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1) What are the main corrosion conditions of Corrugated Culvert Pipe?

①First of all, the outer side of the Corrugated Culvert Pipe is mainly soil corrosion, while the inner side is mainly water corrosion and atmospheric corrosion, with emphasis on soil corrosion and water corrosion protection.

②Second, when selecting materials for Corrugated Culvert Pipe in the design stage, full consideration should be given to the materials, data and corrosion characteristics in the specific medium, and effective working experience and procedures should be fully utilized.

③ Third,The anticorrosion of Corrugated Culvert Pipe culvert should fully understand the corrosive environmental conditions, including:

• (1) Chemical factors: medium composition (including impurities), pH, oxygen content, possible chemical reactions, etc.
• (2) Physical factors: medium temperature, flow rate, heating and heat dissipation conditions, stress type and size, etc. Special attention should be paid to high            temperature, low temperature, high pressure, vacuum, shock load, alternating stress and other environmental conditions.
• (3) In the design of the anti-corrosion structure of galvanized steel bellows culverts, it is also necessary to consider whether the shape and combination of the            structure and components meet the anti-corrosion requirements, especially the requirements to prevent various local corrosion.

2）The anti-corrosion design of Corrugated Culvert Pipe should follow the principle of combining prevention and protection. According to the corrosion of the medium produced during the production process, environmental conditions, production operation management level and construction maintenance conditions, take measures to local conditions, treat differently, and comprehensively choose plating. Anticorrosion measures for zinc steel corrugated pipe culvert. The parts that endanger personal safety and are difficult to maintain, as well as important bearing structures and components, should be protected.

3）Corrosion effects of Corrugated Culvert Pipe should be considered in terms of material selection and structural design, specifically from the following two aspects:

(1) Reasonably select structural materials, anti-corrosion methods and service life, and handle the relationship with engineering economy.

(2) Consider the damage or anti-corrosion measures during the installation process, fully consider the fatigue limit of the combined effect of stress and                        corrosion, and fully consider the stress loss caused by the corrosion of the connection part.

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