The polypropylene PP-R resin modified by the curved elastic organic polymer material technology and the adaptive structure design are specially designed for the hot-melt socket connection of the aluminum alloy-lined plastic composite pipe system, which is called the curved elastic double-melt pipe fitting.
The curved elastic double-melt pipe fitting is specially developed according to the characteristics of the vector structure system. It has many powerful functions such as plastic bearing, flexible deflection, double welding guarantee, and socket positioning. It is suitable for aluminum alloy-lined plastic composite pipe system. The special connecting piece provides important connection guarantee for the structural safety, perfect function and excellent performance of the aluminum alloy lined plastic composite pipe system. It is the core component of the long-term maintenance-free application of the aluminum alloy lined plastic composite pipe system for 50 years.
1. Provide system connection security
The two-way welding (axial socket welding and ring radial deposition welding) of the curved double-melt pipe fittings is an integral structure, which undoubtedly provides a very important connection guarantee for the aluminum alloy-lined plastic composite pipe system.
Not only that, the radial radial welding of the curved double-melt pipe fittings can completely seal the welding gap generated by the axial socket welding, and the welding leakage point is exhausted, and the joint strength and the bearing load are improved, and the safety guarantee is impeccable.
2, with the unique function of self-propelled telescopic compensation
The curved elastic double-melt pipe fittings can be divided into several independent parts while bearing the aluminum alloy-lined plastic composite pipe connection. Under the condition of thermal expansion and contraction temperature change, the pipe linear expansion displacement change along the axial line can be double-melted by the curved elastic The unique deflection structure of the pipe is naturally absorbed, which provides an axial displacement space for the thermal expansion and contraction of the pipe. Therefore, it is not necessary to provide a telescopic compensation device. The rigid installation can solve the problem of thermal expansion and contraction deformation of the pipe system, simplifying the pipeline. The design saves the space used by the pipeline, and the system structure is more secure and firm.
3, the ring radial reinforcement structure is set, simple, but not simple
The Shangzhi engineer used the circumferential stiffening structure in the double-melting pipe fittings of the curved bullets, which not only increased the pipe series value of the pipe fittings to S2.0, but also the compressive strength ≥ PN2.5MPa, and strengthened the plastic load of the flexural deformation of the pipe structure. Moreover, it is ensured that under any temperature change condition, the linear expansion displacement of the inner liner PP-R pipe (inner pipe) of the aluminum alloy-lined plastic composite pipe is always placed in the protection of the rigid structure of the pipe fitting and the aluminum alloy pipe (outer pipe), completely eliminating Safety hazards of aluminum alloy lined plastic composite pipe system structure.
4. Structure setting to prevent welding and shrinkage reduction
The structure of the double-melting pipe fittings of the curved bullets is provided with a space for retaining and welding the fluid material of the filler, preventing the pipe from reducing the diameter of the pipes and reducing the water-passing capacity, and even clogging the construction accidents of the pipes.
5. Setting of the socket welding and marking line to ensure the construction quality
The construction quality is an important factor for the pipeline system to be qualified for delivery and to ensure long-term safe operation. For this reason, the socket welding positioning mark is set on the surface of the corresponding curved double-melting pipe fitting according to the specifications of each pipe. In this way, when performing the pipe connection operation, it is only necessary to carry out the positioning and paying, hot melt, and socket insertion according to the marking line on the surface of the pipe fitting, simplify the connection operation steps, improve the construction efficiency, reduce the operation error, and the construction quality is naturally effective. Improve and guarantee
