How to use
fire-fighting steel pipes correctly? They must be used correctly in accordance with specifications. Large-diameter plastic-coated steel pipe Fire-fighting steel pipe is a new type of pipe. It is used in many fields and has many excellent properties. Especially its anti-corrosion performance is loved by people. Fire-fighting steel pipes are used in many places. The method of use is There is something particular about it.
Fire steel pipes need to be connected with the help of some tools, such as hacksaws, winches, etc. These tools are often used in pipeline construction. The connection of fire steel pipes is also inseparable from these tools. The connection method is the same as The traditional connection methods are basically the same. You can refer to the connection method of galvanized pipes.
What needs to be noted about the connection method of fire-fighting steel pipes is that raw material tapes need to be used at the connections between pipes and pipe fittings. The main purpose of this is to protect the fire-fighting steel pipes and prevent the interfaces from corrosion; in the case of fire-fighting steel pipes When cutting, do not use high-temperature cutting methods. Gas cutting methods must not be used. You can only use wire cutting methods. When cutting, you cannot completely cut off. After cutting half of the fish and shrimp, You should use a hand saw to cut it off, and then use established tools to remove the burrs from the pipe after the cutting is complete. When bending a pipe, you cannot use heating to bend it. The method used should be cooling, and the bending amplitude should not be too large; the surface should be cleaned before the thread interface. , and the pipe fittings used must meet relevant standards; they cannot be exposed to the sun during transportation, otherwise they will cause damage to the fire-fighting steel pipes. The storage temperature of composite pipes must not be too high, and fire-fighting steel pipes must be used away from heat source.
Plastic-coated steel and plastic pipes inside and outside. The internal and external anti-corrosion layers are made of heavy-duty anti-corrosion modified epoxy resin powder. After high-temperature preheating, the plastic layer is sintered with the inner and outer walls of the steel pipe at high temperature. It has a strong bonding force with steel and the coating surface is smooth and beautiful. , due to the small fluid resistance, it can increase the flow rate, save energy, and has excellent anti-corrosion properties and good hygienic performance. Modified epoxy resin powder anti-corrosion has been widely used in the oil and gas industry.
Performance characteristics: There are coatings on the inside and outside, and a composite structure of reinforced welded steel pipes in the middle, which overcomes the shortcomings of steel pipes that are prone to rust, pollution, and short service life, and plastic pipes that have low strength, large expansion, and easy deformation. It has the common advantages of steel pipes and plastic pipes, such as good oxygen isolation, high rigidity and strength, and easy detection of buried pipes. Compared with other types of steel pipes, the main pressure-bearing layer of the internal and external spray-coated steel pipes is completely borne by the welded steel pipes in the composite pipes. The plastic layer only plays an anti-corrosion protection role. Therefore, the pressure-bearing capacity of the pipe is basically not affected by temperature changes and the aging of the plastic layer. Impact. The internal and external spray-coated 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 than plastic composite pipes, and low expansion coefficient and creep resistance similar to steel pipes. Buried pipes can withstand external pressures that are much greater than those of full plastic pipes.
