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Company:Shijiazhuang shentong plastic Industry Co.,LTD

Email: eileen@shentongsuye.com



Address:No. 1-2-402, Dongping Road 5 Jiuxing Court, Qiaodong District, Shijiazhuang, Hebei, China

Water systems "hidden works" is a very important issue, and are based on modern decoration pipes buried wall construction, if water leaks and burst to irreparable consequences.
In the past, mainly for water supply pipeline of cast iron pipes. The main outdoor sand mold cast iron pipes, for indoor use is made of galvanized iron pipe. However, due to several years after the use of easy to produce a lot of rust, bacteria, serious harm to human health. States have provisions since June 1, 2000 phase out sand casting fittings and cold galvanized iron pipe, hot dip progressively restrict the use of cast iron pipe, promote the use of aluminum-plastic composite pipe, new plastic pipe. Thus, the pipeline is currently used by three major categories. The first is a metal tube, such as hot dip cast iron pipe lining plastic, brass, stainless steel tubes. The second category is complex metal plastic pipe, such as plastic complex pipe, aluminum-plastic composite pipe. The third category is plastic pipe, such as PP-R (high density cross-linked polypropylene mesh plastic). States also provide a variety of drinking water pipes and pipe fittings, the health sector must have this document before sale.
Water pipe structure constructed
l galvanized pipe
As water, use a few years, a large amount of rust inside the tube outflow yellow water pollution is not only ware, and mixed with not smooth inner wall of the breeding of bacteria, corrosion caused by heavy metal content in the water is too high, serious harm to human health. (Countries have prohibited the bar when drinking water pipes)
l brass
Resistant to corrosion, it eliminates bacteria advantages, is water in the upper materials, the way the interface brass ferrule and welding are two kinds. Card sets exist for a long time aging water leakage problems, so most users install brass welded, soldered interface is welded together by oxygen, so it is possible with PP-R pipes like never leak. One drawback is that brass heat quickly, so the hot water pipe outside the famous brass manufacturers are covered with plastic to prevent heat dissipation and a blowing agent. Another disadvantage is the expensive brass, very few community water supply system is brass. If you're going to change the water, and feel good, then brass, proposals must be welded interface mode.
l stainless steel tube
It belongs to the very expensive plumbing, construction difficulties, rarely used, similar performance and copper.
l plastic tube
1.UPVC tube
It is actually a plastic tube, the interface is generally glued, frost and heat capacity of UPVC is not good. So hot and cold water are rarely used, PVC pipe for wire and pipes and sewage pipes, found that in recent years the scientific community, to make become more flexible PVC phthalate chemical additives, the human body, kidney, liver, testicles great impact, will cause cancer, kidney damage, damage to the human body functions recycling system, affecting development. (Only good with hot water with cold water, and in winter and easily brittle)
2.PPR tube
As a new pipe material, it can be used as cooling tube, can also be used as a hot water pipe, due to its non-toxic, light, pressure, corrosion resistance, is becoming a promotion material. Also applies to hot water pipes, and even clean drinking water pipeline. PPR pipe interface with hot-melt technology, between the tubes completely fused together, so once installed pressure tested, not like plastic tubes exist a long time aging water leakage, and PPR pipes will not scaling. The main defect PPR pipes are: high temperature, pressure resistance slightly worse, long-term working temperature should not exceed 70 ℃; each finite length, and can not bend construction, pipeline and more if long distance or corner in the construction on to use a large number of joints; pipe fittings cheap, but the price is relatively high.
3.PB tube
PP-R pipe PP-R pipe
Polybutylene (PB) resin was first synthesized in 1954 by the Italian professor G. Natta, 1964 industrial production began, the Austrian Association of Plastic first appeared polybutylene (PB) pipe heating system in 1965, exciting that the system is still running. In the 50 years since then, polybutylene (PB) piping systems application has been continuously promote, connecting pipe radiator heating system is used within the building, floor radiant heating system and hot and cold water piping system life. Polybutylene (PB) resin is a polymer composed of carbon and hydrogen, as compared with traditional materials such as metals and ceramics, it is easy to process recycling, low energy consumption throughout the life cycle, the green environment friendly materials. From a structural point of view, polybutylene (PB) is a linear isotactic semi-crystalline thermoplastic materials, processing and use of toxic pollution, can be repeatedly thermoformed. Therefore, polybutylene (PB) combination of health, processability, surface finish, strength, flexibility and connectivity advantages, made a comprehensive balance of physical properties, thermodynamic properties and functionality, etc., giving poly butene (PB) plastic pipe many unique characteristics, it is possible a fluid delivery system, especially in the field of hot water delivery system within the building opened up a vast arena.
4.PE-RT pipes
PE-RT that is heat-resistant polyethylene, Polyethylene of raised temperature resistance is the abbreviation, is a non-crosslinked polyethylene can be used for hot water pipes, it was also highlighted the characteristics of its non-crosslinked, called it " high-temperature non-crosslinked polyethylene. " It is a uses a unique molecular design and synthesis process to produce medium-density polyethylene, which uses ethylene and octene copolymer way to obtain a unique molecular structure by controlling the number and distribution of side chains to improve PE resistance heat. Due to octene short branches make PE macromolecules can not crystallize in a sheet-like crystal, but throughout several crystals, forming a link between the crystals, it retains the PE of good flexibility, high thermal conductivity and inert, while the pressure to make it better, this modified method similar to the common on the market today PPR. PE-RT pipe can be used for all levels of use specified in the ISO10508 hot water pipes!
5.PPH (polypropylene tubes)
Applied to the row (sewage) water pipes, waste pipes, rainwater pipes, exhaust pipe of high-density polypropylene pipe shall comply with DIN53457 (ISO / R1133, ISO / R179, RAL), its attachment method should be adopted and butt welding sets construction methods
6.PP-B (polypropylene block copolymer)
Since the construction using fusion technology. Therefore also known as hot melt tube. Non-toxic, light, pressure, corrosion resistance, is becoming a promotion material, but the choice is still relatively small renovation project. The choice is still relatively small. In general, this material is not only suitable for cold water pipes, but also for hot water pipes, and even clean drinking water pipeline.
7.PEX tube
Advantages of cross-linked polyethylene pipe (PEX) Generally this material with heat pipe welding .pex: good pressure resistance, nominal pressure 1.25MPa, de16mm burst pressure greater than 6MPa, de20mm burst pressure greater than 5MPa; wide temperature range : -70--95 ℃ (short-time 110 ℃); acid corrosion, can be used for a variety of chemical delivery; excellent high temperature resistance, low temperature performance; pipe outer wall smooth, low resistance, without fouling; clean, non-polluting, it can be removed references to "yellow water", "rust water" bitter; use of special fittings, quick and easy installation, no tapping, threading, welding; there are just soft and pliable, saving fittings; light weight, galvanized steel pipe length up only 1/10; has good thermal insulation properties; long life, at 70 ℃, working pressure ≤0.8MPa, continuous use life of 50 years.
l plastic composite pipe
1. plastic composite pipe
Is the first alternative to cast iron pipe water supply pipe, its basic structure should be five, that is, from the inside out followed by plastics, adhesives, aluminum, adhesives, plastics.
Plastic composite pipe has good insulation properties, corrosion of the inner and outer wall is not easy, because the wall is smooth, fluid resistance is small; and because can be bent, it is convenient for installation and construction. As the water supply pipe, aluminum-plastic composite pipe has sufficient strength, but if lateral force is too large, it will affect the strength, so should make clear tube construction or buried in the wall, but not buried. Plastic composite pipe is connected to the card sets, so that the construction is necessary to pass a stringent test pressure test connection is secure. Second is to prevent frequent vibration, so that the card sets loose. Third, the longitudinal direction should leave enough installed capacity, so as not to pull off.
2. plastic composite pipe
Plastic composite pipe products to seamless steel tubes, welded steel pipe as the base pipe, polyethylene powder coating the inner wall of high adhesion, corrosion, sanitary food-grade coating or epoxy paint. Using pre-treatment, pre-heating, interior painting, leveling, treated water inside galvanizing process made of plastic composite pipe, is the traditional galvanized pipe upgrade products. Product implementation of the Ministry of Construction CJT120-2000 industry standards. Diameter range DN15 - DN1200 with flange and can be coated with a pressure tank length 6m, 9m, 12m and not length between the length of the wall thickness of the coating 100 microns to 500 microns, typically 350 microns. Pipe joints threaded connection, flange connection, clamp connection before processing chemicals leaching tank, physical sand blasting method Thermoplastic polyethylene powder coating varieties (PE), a thermosetting epoxy resin powder (EP) and other powder coating
Product Features: Health, non-toxic, non-fouling, non-breeding micro-organisms, to ensure the quality of the fluid 2. chemical resistant, corrosion-resistant soil and marine life, cathodic disbondment 3. Installation process maturity, convenient, and ordinary galvanized pipe 4. The connection similar weather is good for the desert, salt and other harsh environments 5. smooth wall, improve transport efficiency, long service life.
4. The outer layer of plastic composite pipe weld type
Spliced outer plastic composite pipe comprising an outer layer co-extruded plastic layers of polypropylene random copolymer, polypropylene random copolymer in the co-extruded plastic layer is connected to the inner surface of the hot-melt adhesive layer, a hot melt adhesive the inner surface of the adhesive layer of the aluminum layer is connected to the inner surface of the aluminum layer is connected to a hot-melt adhesive layer, a hot melt adhesive on the inner surface of the connection layer co-extruded plastic layer of polyethylene; utility model both plastic composite pipe excellent high temperature properties and small thermal deformation characteristics and reliability of the PP-R pipe hot melt connection, and can be widely used in hot and cold water and drinking water systems, heating pipes, floors, walls, heating systems, solar heating and cooling systems, industrial fluid delivery system, central air conditioning systems, compressed air piping system and other fields.