How to use fire-fighting steel-plastic composite pipe

How to use the steel-plastic composite pipe correctly should be used correctly in accordance with the specifications. Large-diameter plastic-coated steel pipe steel-plastic composite pipe is a new type of pipe, which is used in many fields and has many excellent properties, especially its anti-corrosion performance is loved by people. Steel-plastic composite pipes are used in many places. The method of use is very particular.

When connecting steel-plastic composite pipes, some tools are needed, such as hacksaws and wire stranding machines. These tools are often used in pipeline construction. The connection of steel-plastic composite pipes also cannot do without these tools. The connection method is basically the same as the traditional connection method. You can refer to the connection method of galvanized pipe.

The connection method of the steel-plastic composite pipe needs to be noted that the raw material tape needs to be used for the connection between the pipe and the pipe fittings. The main purpose of this is to protect the pipe of the steel-plastic composite pipe and prevent the joint from being corroded; When cutting the steel-plastic composite pipe, do not use high-temperature cutting methods to cut. Such methods as gas cutting can never be used. Only the cutting method of pipe thread can be used. The cutting method cannot be completely cut. After cutting in half, the fish and shrimp should use a handsaw to cut them, and then use the established tools to remove the burrs from the pipes after the cutting is completed. When bending the pipe, heating cannot be used to bend it, the method used should be cooling, and the bending amplitude should not be too large; the surface of the wire mouth should be cleaned before the interface , And the pipe fittings used must meet the relevant standards; it should not be exposed to the sun during transportation, otherwise it will cause damage to the steel-plastic composite pipe. The storage temperature cannot be too high for the composite pipe or the steel-plastic composite pipe. Keep away from heat sources when using.

The inside and outside are coated with plastic steel and plastic pipes, and the inside and outside anti-corrosion layers 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 strong bonding force with steel. The surface of the coating is smooth and beautiful. , Due to the small fluid resistance, it can increase the flow rate, save energy, and has excellent anti-corrosion performance and good sanitary performance. Modified epoxy resin powder anticorrosion has been widely used in the oil and gas industry.

Performance characteristics: both inside and outside are coated, and the middle is a composite structure of reinforced welded steel pipes, which overcomes the defects of easy corrosion, pollution, short service life and low strength of plastic pipes, large expansion and easy deformation of steel pipes. It has the common advantages of steel pipes and plastic pipes, such as good oxygen insulation, higher rigidity and higher strength, and easy detection of buried pipes. Compared with other types of steel pipes, the main pressure-bearing layer of internal and external sprayed steel pipes is completely borne by the welded steel pipe in the composite pipe, and its plastic layer only plays a role of anti-corrosion protection, so the pressure-bearing capacity of the pipe is basically not affected by temperature changes and plastic layer aging Impact. The internal and external sprayed steel pipe not only inherits the advantages of metal pipes and plastic pipes, but also overcomes their respective shortcomings. It is a new type of pipe that integrates the advantages of metal pipes and plastic pipes. This product has the following performance characteristics:

Excellent mechanical strength, higher strength, rigidity, and impact resistance exceeding the strength of plastic composite pipes, and low expansion coefficient and creep resistance similar to steel pipes. Buried pipes can withstand external pressure much greater than that of all plastic pipes.