Many enterprises will consider the service life and mechanical strength of stainless steel tanks when purchasing them. However, if some media are stored later, intergranular corrosion will occur. If it is found later, the tank will leak, which will lead to the late exchange of materials, resulting in the company's bankruptcy, reputation damage and other impacts. At present, the appearance of PPH storage tank has replaced some medium stainless steel storage tanks, with the advantages of integrity, corrosion resistance, etc. PPH winding tank

PPH vertical storage tank is a plastic storage tank made of PPH particles after processing. The tank shell of PPH is made of PPH granular material through extrusion and winding process, and the product is single forming without welding. The storage tank of PPH is made of polypropylene plates welded together. From the perspective of corrosion resistance, the corrosion resistance of PPH vertical storage tank is similar to that of PPH vertical storage tank. From the perspective of stability, the PPH tank is integrally formed, without welding and leakage, while the PPH tank is welded, which is prone to leakage and increases instability factors. In terms of other properties, such as aging resistance, there is a big gap between them.

The corrosion resistance of PPH tank is similar to that of polyethylene pipe, with better performance. The anti-corrosion method of storage tank is to add cathodic protection and layer protection, and the coating protection is divided into two ways.

The anti-corrosion treatment inside and outside the PPH tank includes the following points:

1、 The anti-corrosion methods of PPH storage tank are cathodic protection and layer protection. Coating protection can be divided into two ways, including anti-corrosion treatment inside the tank and anti-corrosion treatment outside the tank:

1. For the storage of oil or oil tank, the anti-corrosion coating of storage tank is required to have the performance of electrostatic conductivity, so in the tank anti-corrosion treatment, the electrostatic conductive coating is used for tank anti-corrosion treatment.

2. The treatment of anti-corrosion coating outside the tank shall consider the anti-corrosion performance, weather resistance and aesthetic performance of the tank.

2、 The design of PPH tank anti-corrosion coating must consider the temperature resistance characteristics of each anti-corrosion coating and have compatibility. In case of alkyd anti-corrosive coating, direct matching must be avoided because of chemical reaction with zinc powder.

3. The cathodic corrosion protection of the tank is divided into the cathodic protection of the external current of the tank bottom and the anodic protection of the water layer in the tank. PPH mixing tank

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