The clay pipe is connected by pipe fitting, reliable performance, to ensure no leakage, is a current type of environmental protection pipe. The production range is from 400mm to 3000mm. The carat pipe has the advantages of corrosion resistance, aging resistance, no pollution, light weight, smooth inner wall, large water transfer, reliable sealing, quick construction and so on. Mainly used in municipal construction, irrigation engineering, power generation, water diversion, mine water and other fields. It will become the mainstream product of urban drainage pipe network, and gradually replace metal pipe, PCCP pipe, cement pipe, and additional plastic pipes.
HDPE pipe fitting suppliers say carat pipe performance characteristics:
1. Excellent physical properties. High density polyethylene (HDPE) has excellent rigidity, strength, flexibility and creep resistance. Compared with HDPE, HDPE has better hot melt connection performance, which is conducive to the installation of plastic pipe.
2, corrosion resistance, lengthy service life, in the coastal area of our country, the underground water level on the steep side, the land humidity is high, and the PE pipe can withstand various kinds of chemical media erosion, do not need corrosion protection treatment. In addition, the service life of up to 100 years.
3. The hot winding forming welding joint has superior quality. The flat material belt and the coating material belt in the molten state extruded from the extruder's mouth die are evenly wound on the heated roller mold according to the predetermined position to ensure the quality of the melting joint of the structural wall pipe. Especially in the structural design, the melt joint of the flat material belt is covered by the material belt covering support tube, which improves the overall external pressure resistance of the product. The horizontal layer and the reinforced structural layer of the pipe are fused in the melting state, the welding quality is strong, there is no internal stress, and the overall strength of the pipe is strong.
4, plastic pipe belongs to flexible pipe, under external pressure load, flexible pipe and rigid pipe to bear the load mechanism is entirely different. Flexible pipes can have a large deformation before being damaged by pressure, while rigid pipes cannot have a large deformation before being damaged by external pressure. When the rigid pipe is under external pressure, the load entirely passes through the pipe wall to the bottom of the pipe bed, producing a bending moment in the pipe wall. With the increase of the pipe diameter, the bending moment and stress of the pipe wall increase sharply, so the concrete drainage pipe with large diameter frequently needs to add reinforcement: and the flexible pipe deformation before the compression damage - transverse expansion, The backfill soil around the pipe can prevent the flexible pipe from deformation and expansion, and the external pressure load is transferred and distributed to the surrounding backfill soil. Therefore, under the same external pressure load, the stress in the wall of the flexible pipe is tiny, and it and the surrounding backfill soil bear the load, and the pipe acts in the same way. Therefore, the plastic buried drainage pipe does not need the same strength and stiffness as the rigid concrete pipe. Under the reasonable stiffness, it can sufficiently meet the requirements of use, which has been confirmed by the application practice of the developed countries in Europe.
5. Good toughness and flexibility. PE pipe is a kind of high toughness pipe, its elongation at break is more than 500, the uneven settlement and dislocation of the pipe foundation is extremely strong adaptability, excellent seismic resistance, therefore, suitable for earthquake risk areas, the practice around the world has proved that PE pipe is a excellent seismic resistance pipe. It is reported that in the 1995 Kobe earthquake in Japan, PE pipe and water supply pipe were the pipes that were not damaged. In addition, the flexibility of PE pipe is that PE pipe can be coiled (especially narrow diameter PE pipe), reducing a large number of connection pipe fittings. The direction of PE pipe is easy to alter according to the requirements of the construction method. During construction, obstacles can be bypassed within the allowable bending radius of the pipe to reduce the difficulty of construction.
6, the circulation capacity is large, economically cost-effective. PE tube inner wall is smooth, no scaling. The surface equivalent to roughness ratio of PE pipe is 1/20 of the steel pipe, the flow capacity of PE pipe under the same diameter, the same length and the same pressure is about 30% larger than that of the steel pipe, so the economic advantage is obvious. Compared with metal pipe, PE pipe can reduce the project investment by about one third (diameter of 200 mm or more large pipe cost is slightly higher), can coil narrow diameter pipe, can significantly reduce the project cost.
7. Excellent installation performance. The pipe connection adopts the technology of embedded electric fuse in the socket with the same material, and the connection quality is superior. Can do 100 no leakage, to ensure the pipeline system life of the same and operation. At the same time, because the product under the same application conditions as other pipe weight, convenient transportation, convenient construction, can reduce the construction cost, in the application range, do not need concrete bedding and concrete pipe base trench qualified can be directly applied pipe, essentially do excavation, pipe down, side backfill, simplify the construction procedure, shorten the construction period. In the project acceptance, closed air inspection is used instead of closed water test, not only the acceptance speed, but also the complicated work and a large amount of test costs in closed water test.
8, good seal. The PE pipe itself adopts fusion connection (hot melt or electric melt), which essentially ensures the interface material, structure and the identity of the pipe body itself, and realizes the joint and pipe. The tensile strength and blasting strength of the interface are higher than that of the pipe body, and it can resist the circumferential stress and axial stress generated by the internal pressure. Therefore, compared with rubber ring connections or other mechanical connections, there is no leakage risk caused by connection distortion, and the sealing performance is extremely excellent.
9, decent stress cracking resistance: PE pipe has a low notch, great shear strength, excellent scar resistance, environmental stress resistance is extremely prominent.
10, low temperature impact resistance is excellent: PE pipe low temperature embrittlement temperature is extremely low, can be used in the temperature range of -60 degrees Celsius. And in the northern areas of our country, when the field paved polyethylene buried water supply in winter, it is not suitable for the laying construction at below zero temperature, because the polyethylene pipe is easy to crack.
11. Excellent wear resistance. The wear resistance of polyethylene pipe and steel pipe is 4 times that of steel pipe.
12, with excellent resistance to 222 scratches. Studies have proved that PE grade PE tubes have better SCG resistance and scratch resistance. The PE100 grade pipe has better scratch resistance.
13, excellent resistance to rapid crack transmission ability. Cracking means that when cracking occurs in the pipeline, the crack is transmitted at a extremely rapid speed, and the pipeline may be destroyed instantaneously, with unimaginable consequences. The practice shows that PE pipe in plastic pipe has stronger resistance to crack transmission than alternative pipes.
14, winding pipe materials, high density polyethylene and polypropylene can be 100% recycled.