how to use fire-fighting steel-plastic composite pipe

How to use steel-plastic composite pipes correctly must be used according to specifications. The large-diameter coated plastic steel pipe and steel-plastic composite pipe are a new type of pipe material, widely used in various fields, with many excellent properties, especially its anti-corrosion performance, which is deeply loved by people. Steel plastic composite pipes are used in many places. Its usage method is certain.



When connecting steel-plastic composite pipes, some tools such as hacksaws and stranding machines are needed, which are often used in pipeline construction, and the connection of steel-plastic composite pipes cannot be separated from these tools. The connection method is the same as traditional connection methods, and can refer to the connection method of galvanized pipes.



For the connection method of steel plastic composite pipes, it should be noted that Thread seal tape is required for the connection of pipes and pipe fittings. The main purpose of doing so is to protect the pipes of steel-plastic composite pipes and prevent joint corrosion; When cutting steel plastic composite pipes, do not use high-temperature cutting methods. Do not use methods such as gas cutting. Only wire group cutting method can be used, and complete cutting cannot be carried out during cutting. After cutting the fish and shrimp in half, use a hand saw to cut them off. After cutting, use the established tool to remove burrs from the pipe. When bending pipes, heating should not be used for bending, but cooling should be used, and the bending amplitude should not be too large; Before the wire interface, the surface should be cleaned, and the pipe fittings used must comply with relevant standards; During transportation, it is not allowed to be exposed to sunlight, otherwise it may cause damage to the steel plastic composite pipe. The storage temperature of the composite pipe should not be too high. How to use it away from heat sources.



The inner and outer packaging of plastic steel pipes and the inner and outer anti-corrosion layer are made of heavy-duty anti-corrosion modified epoxy resin powder. After high-temperature preheating, the plastic layer is fused with the inner and outer walls of the steel pipe at high temperature, and has a strong bonding force with the steel. The coating surface is smooth and beautiful, Due to low fluid resistance, it can increase flow rate, save energy, and has excellent anti-corrosion performance and good hygiene performance. Modified epoxy powder anti-corrosion has been widely used in the petroleum and natural gas industries.



Performance characteristics: Internal and external coatings, with a reinforced welded steel pipe composite structure in the middle, overcoming the shortcomings of steel pipes such as easy corrosion, pollution, short service life, low strength, large expansion, and easy deformation. Plastic pipe. It has the common advantages of steel pipes and plastic pipes, such as good oxygen resistance, high stiffness and strength, and easy detection of buried pipelines. Compared with other types of steel pipes, the main pressure bearing layer of the inner and outer plastic sprayed steel pipes is completely borne by the welded steel pipes in the composite pipe, and the plastic layer only serves as anti-corrosion protection. Therefore, the pressure bearing capacity of the pipeline is not affected by temperature changes and aging of the plastic layer. The inner and outer plastic coated steel pipes not only inherit the advantages of metal pipes and plastic pipes, but also overcome their respective shortcomings. It is a new type of pipe material that combines the advantages of metal and plastic pipes. This product has the following performance characteristics:

Excellent mechanical strength, higher strength, stiffness, and impact resistance than plastic composite pipes, low expansion coefficient, and creep resistance similar to steel pipes. Buried pipes can withstand much greater external pressure than fully plastic pipes.