China's steel-plastic composite steel pipes have not been developed for a long time, and there is still a large gap compared with foreign countries in terms of raw materials, technology, manufacturing equipment, etc. For example, coating on the outer wall of the pipeline can increase the loop resistance and reduce the corrosion current; adding a DC power supply can make the steel pipe have a negative potential against the soil and form cathodic protection, which can eliminate the potential difference between the cathode and the anode and fundamentally interrupt the cathode and anode process.
To improve the competitive advantage of the internal and external plastic-coated steel pipe
industry, plastic-coated pipes must improve the product quality level of steel-plastic composite steel pipes. In the past few years, the Steel-Plastic Pipe Industry Federation has actively promoted and conscientiously implemented the industry standards of products in the industry, and has taken the lead in launching certification work for the use of industrial product logos, which has continuously improved the quality level of steel-plastic composite steel pipe products. Anti-corrosion coating legal table for internal and external plastic-coated steel pipes and cathodic protection legal standards. Disadvantage: When used as a hot water pipe, long-term thermal expansion and contraction may cause misalignment of the ferrule connection, resulting in leakage. Know the quotation and market situation. Generally speaking, the quotation for using plastic-coated steel pipes inside and outside the water for one kitchen and one bathroom should be affordable to most families. Therefore, the separation of anti-corrosion coating and cathodic protection is an economical and effective method to treat both symptoms and root causes. How to choose aluminum-plastic composite pipes and plastic-coated steel pipes has become a headache for consumers.
Internal and external plastic-coated steel pipes are a new type of pipeline material that has developed in recent years. It uses steel pipes as the base and is composited by coating the steel pipes with various plastics. Through the large market and channels of the Internet, the industry has promoted the determination of suitable materials for steel-plastic composites. There are many types of water pipes on the market. Let’s take a look at the characteristics of water pipes made of different materials: Aluminum-plastic composite pipes Advantages: Aluminum-plastic composite pipes It is a kind of pipe that was once more popular. It is light, durable, and easy to construct. There are many types of aluminum-plastic composite pipes sold on the market, and the quality and price vary greatly. This may be beyond the imagination of many owners, so many businesses like to make a fuss about the quotation of water pipes when promoting. The plastic-coated steel pipe industry at home and abroad is also developing rapidly. Currently, the annual production capacity of companies producing steel-plastic composite steel pipe products exceeds that, and the export volume is also increasing year by year. The market share of steel-plastic composite steel pipes in the market is constantly increasing. For this reason, we must not be tempted by the quotation of water pipes when purchasing. Asking for quotations for joints and accessories is a good way to save money. For the three processes of electrochemical corrosion of buried pipelines, the anti-corrosion of steel pipes can prevent them.