1. What is PP-R plastic aluminum steady-state composite pipe?
PP-R plastic aluminum steady-state composite pipe is evolved from the traditional PPR pipe. The inner pipe is ordinary PP-R pipe, the outer layer is plastic protective layer, and the middle is aluminum layer. The pipe is compatible with ordinary PP-R pipe. The rigidity of the metal and the metal tube achieves stable mechanical properties through the integrated aluminum layer, and has excellent comprehensive physical properties such as small linear expansion coefficient, non-oxygenation, ultraviolet resistance, high strength, and high temperature resistance.
PP-R plastic aluminum steady-state composite pipe is a five-layer composite pipe. The PP-R pipe and the aluminum layer are organically combined at a high temperature through a special hot-melt adhesive to form a polypropylene-hot melt adhesive-aluminum layer. -Special composite structure of hot melt adhesive-polypropylene, the inner and outer PP-R materials can ensure the hygienic performance of the material in water supply applications, wherein the inner PP-R size is close to the ordinary PP-R tube, which is the main pressure Body, while the middle layer of aluminum acts as a strengthening protection, achieving stable physical and mechanical properties through five layers of organic bonding, so that the composite tube has high stiffness, high temperature resistance, high toughness, low linear expansion coefficient of three high and one low characteristic. It compensates for the limitations of ordinary PP-R pipes in the application of risers, wall mounted pipes and hot water pipes, and is a major comprehensive upgrade of ordinary PP-R pipes.
Second, the characteristics of PP-R plastic aluminum steady-state composite pipe
PP-R plastic aluminum steady-state composite pipe integrates the advantages of ordinary PP-R pipe and metal pipe, and has the hygienic and corrosion resistance of plastic pipe, and the anti-ultraviolet, non-osmotic, and surface-mounted of metal pipe. Features such as deformation, which make it have higher strength and more stable mechanical properties, with the following outstanding advantages:
1, no oxygen, no algae growth
2, the expansion coefficient is small, the surface is not deformed
3, high stiffness, high toughness, high temperature resistance
4, anti-UV, prevent material aging
5, heat preservation and energy saving, more economical
6, the connection is firm, no leakage, easy to install
PP-R plastic aluminum steady-state composite pipe in the pressure bearing, the main pressure bearing is the PPR layer in the inner pipe, which is the same as the ordinary PPR pipe, can use the standard size ratio SDR value to characterize the load bearing the pipe Capability, can use the pipe series S to select the pipe, determine the wall thickness of the pipe, the service life, can guarantee the service life of 50 years. Since the outer layer is also covered with an aluminum layer and a plastic layer, the total wall thickness is significantly higher than that of the same series of ordinary PP-R tubes, so the safety and reliability are further improved on the basis of ordinary PP-R pipes.
PP-R plastic aluminum steady-state composite pipe in the connection mode, the connection mode is the same as ordinary PPR pipe, can be connected with ordinary PPR pipe fittings through hot-melt socket, thus completely eliminating the ordinary aluminum-plastic composite pipe, aluminum-plastic PPR composite pipe The pipe connection is not reliable, and the interface is prone to water leakage. However, before the hot-melt socket welding of the PPR plastic aluminum steady-state composite pipe, the aluminum layer protective layer of the pipe socket portion needs to be removed by a special tool.
Third, PP-R plastic aluminum steady-state composite pipe application range
1. Water supply system for civil buildings, indoor and outdoor mounted pipelines
2, high temperature hot water, central air conditioning, radiator heating field, residential heating pipe network
3. Pipe network for air conditioning equipment, heating pipes, floors, wall heating devices
4. Industrial water systems such as pure water, beverages and dairy products
5, chemical, petrochemical, such as transporting various corrosive liquid pipe networks
6, solar heating, cooling device
7, factory compressed air pipe network
8, radiator heating, hot water circulation system
9, central air conditioning piping system
10. North building snow plant
PP-R plastic aluminum steady-state composite pipe determines its special function due to its special structure. Its three high and low characteristics are the scientific upgrade of PP-R pipe system, which makes up for the limitations of ordinary PP-R pipe. . Because this pipe is a perfect combination of metal and plastic pipe, it combines the advantages of two materials into one, eliminates their own defects, shows excellent performance, and greatly expands the application field of PP-R pipe.
Aluminum Oxide Grinding Wheels
White alumina grinding wheel is made by sintering first-grade sand, high-quality alumina and binder at high temperature, also known as ceramic grinding wheel. Wear-resistant and durable. It has high hardness, brittle abrasive grains, sharp edges and corners, strong grinding ability, low calorific value, high temperature resistance, acid and alkali corrosion resistance, high efficiency and good self-sharpening. The grinding products are smooth and delicate
White alumina Bench Grinding Wheel, suitable for grinding steel with hard material and strong heat sensitivity. Such as grinding of hardened steel, high carbon steel, general high speed steel, alloy steel, stainless steel, etc. Mainly used for grinding and forming grinding of tools, cutting tools, molds, gears, threads, thin-walled parts, etc
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Kemei produce and aim on the following types grinding tools, such as aluminum oxide grinding wheel, silicon carbide Grinding Wheels , mounted points, Diamond Grinding Wheels, CBN Grinding Wheels and all types of saw blades and cut off wheels.
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Aluminum Oxide Grinding Wheels,Red Corundum Wheel,High Speed Grinding Wheel,Brown Corundum Wheel
Henan Jinlun Superhard Material Co., Ltd , https://www.kmgrindingwheels.com