PSP steel-plastic composite pipe connection connection there are two kinds of connection, one is double hot melt connection, the other is the internal expansion flare connection.
One, double hot melt connection
Generally used for DN160 below, DN160 above is the use of flange connection. It is characterized by full plastic sealing connection, to avoid contact between the steel belt and air and water, the pipe and water have a good protective effect, the connection is convenient and reliable no leakage.
Two, internal expansion and flare connection
DN20-DN25 with a compression connection, DN32-DN63 with a screw type expansion connection, DN75-DN110 with a bolt type expansion connection, DN160-DN200 with a flare connection, of course, this is also based on the design drawings and the owner's needs to be adopted, and some of the project DN63 or more on the flare connection.
PSP steel-plastic composite pipe expansion flare connection is characterized by the connection is convenient, reliable, there will be no leakage, do not have to take into account the surrounding temperature, a little close to the traditional screw connection. Plastic lined steel pipe connection is a silk buckle, with the traditional galvanized steel pipe connection is the same.
Expanded Information:
1, with more than the strength of the plastic pipe of higher strength, rigidity, impact resistance, with a low coefficient of expansion similar to the steel pipe and creep resistance, buried pipe can withstand much more than the all-plastic pipe of the external pressure.
2, no need to do any anti-corrosion treatment can be installed, saving the project cost.
3, PSP steel-plastic composite pipe with self-tracing, magnetic metal detector can be traced, without the need for additional buried tracking or protection of markers, to avoid excavation damage, for repair and maintenance to provide great convenience. This point lined steel pipe also has.
4, with excellent sealing performance, resistance to pull off, easy to install, but also has a pipe, pipe line of various deformation adaptive capacity.
5, the complete steel pipe layer is the main pressure-bearing layer of the pipe body, so the pressure-bearing capacity of the pipe is not affected by changes in the performance of the plastic layer.
6, has a certain degree of flexibility, can be bent, so that the loading and unloading, transportation, installation of adaptability and high reliability of operation. Underground installation can effectively withstand the sudden impact load due to settlement, slippage, vehicles and so on.
7, PSP steel-plastic composite pipe and plastic-lined steel pipe, they have smooth walls, low fluid resistance, no scaling, in the same pipe diameter and pressure than the metal pipe head loss is 30% lower, you can get a larger transmission flow.