PP pipe grade high working degree up to 95 °C, at 1.0MPa pressure for long-term use temperature of 70 °C, to meet the upper limit of hot water supply, working pressure PN1.0MPa, service life up to more than 50 years, at room temperature service life up to more than 100 years, easy installation, reliable connection, PP pipe not only simple production process, less equipment investment and light weight, weight is only 1/9 of steel pipe, 1/ of purple steel pipe/ 10. The construction intensity of the workers is reduced, because the pipe material is processed and made of raw materials.

PP pipeIt has good hot melt function, easy and reliable installation, the strength of the connection part is greater than that of the pipe wood, the inner wall of the straight pipe is smooth, there will be no scaling, the friction resistance of the lead stroke is smaller than that of the box pipe, the cross-sectional area of the pipe fittings is not small when connected, and the local resistance coefficient is small for the sub-metal pipe. The raw material of the pipe is polyolefin, its molecule is only composed of C and H elements, the raw and auxiliary materials fully meet the health standards, the corrosion resistance is good, there is no chemical effect on all ions in the water, it will not rust, and the waste can be directly used in the production of pipes and pipe fittings after cleaning and crushing. In the process of production and construction, there is no pollution to the environment, and it belongs to the edge color building materials.

In the process of elastoplastic bending of the pipe, the outer material of the pipe is elongated and deformed under the action of tangential tensile stress, and the material of the side wall of the pipe will be deformed and unstable and some tensile cracking, so the forming limit of the pipe bending can be determined according to the plasticity of the material, that is, the elongation, and the plastic melt is necessary to pass through the shunt equipment in the machine head before entering the mold. The molten material from the extruder gradually becomes a ring, and the material is very well plasticized, so the head should be equipped with diverting equipment such as diverting cones and diverting brackets.