pvc pipe repair treatment

pvc pipe repair treatment methods are as follows :
1 stick Interface slight leakage : leakage of the adhesive bonding of the processing method can be used to trap the adhesive patch . This method must first be drained within a pvc pipe water , and to form a negative pressure within the pvc pipe , and then the adhesive note  electrofusion coupling mould on the site of the leakage gap , due to the negative pressure within the pvc pipe , adhesives sucked gap , and reached only the purpose of the drain .
2 bonding flange leaks : the water drained , lifted gate . The pvc pipe spigot end connection flange joints wipe with adhesive brushing .
3.pvc small area of ​​the pipe due to external causes damage , cracks, and the physical properties of the surrounding unchanged bonding method can also be processed ( patch ) . Method: the memory of water drain pipe , the pipe will be damaged parts of the surface roughening ; cross section of the same pipe diameter , whichever half ( covering an area larger than the damaged area ) , the inside of the selected segment wipe fight hair , damaged parts in the pipeline painting the inner surface of the tube sheet  pipe reducing coupling mould and the selected patch adhesive sheet to cover the repair pipe pvc pipe damaged parts of the surface compression and fastening pipe card or wire ( two ) .
4 between the flange and valve gasket leaking valve at both ends of the pipe section shall be adjusted to the same level symmetrical with the gate and then tighten bolts.
.. 5 welding repair method : a welded parts should be made dried , and clear their dust, oil and other fats surface ; bonding interface when welding repair , the adhesive must be cleaned before welding.
b.pvc pipes and fittings slight leakage without affecting the structural safety under conditions , can be repaired by welding rod pvc-u , the ambient temperature is not lower than 5 degrees Celsius. When using the multilayer welding , after a period of time to cool , then the  chinese mould next layer welding. When welding , the need to maintain the proper temperature and pressure , hot air temperature should be 260 degrees -290 degrees Celsius. Overheating of the material easily deformed or carbonized high pressure may cause rupture of the weld after cooling .
c. bead should be beyond repair parts around the edge of each 9mm-13mm.

The overall strength of China's mold industry to be improved

At present, China hardware tool and die industry has entered the world. China's hardware industry is now at least 70% of private enterprises, the main force of China's hardware industry development. China has gradually become a big country and export world's largest metal processing and metal has become one of the world's largest producer, has a vast potential market and the consumer.
From the market, the domestic market  pipe reducing coupling mould demand for high-grade mold large, according to forecasts, "Twelve Five" period, the total market steady upward trend mold, but the mold must meet the requirements of domestic users in terms of quality, delivery, etc. demand. Moreover, appliance, automotive, plastics industry, the greatest demand for molds. China had become the mold production centers to enhance the overall strength of the need to accelerate
In the new wave of integration in the world economy, global manufacturing to accelerate the transfer to mainland China has become a trend, China will gradually develop into a world-class manufacturing base. Obvious advantages of Guangdong Pearl River Delta region in particular, will become the world's manufacturing center die within a decade. With the increasing domestic demand in China can be expected to die by 2013 China will have a larger growth industry. Especially in the automotive industry, has Shorter Pipe Clip  led to the rapid development of China's mold industry, promote the rapid transformation and upgrading of mold enterprise.
The industry believes that, strengthen independent innovation in the industry change the growth mode, optimize the industrial structure, have a greater need high levels of mold machinery and equipment, providing a broad development space for the development of mold industry. More importantly, "five" the implementation of development policies and emerging strategic industries, regional development planning and policy to revitalize the equipment manufacturing industry will die industries are providing new growth point. With Male/ Female Tee mould  manufacturing in developed countries have to transfer to China, China's mold industry is facing a new round of development opportunities. Forecasts, and the internal and external drives Qi moving environment, to 2015, China's mold output will reach 350 billion yuan.

Market policy effects appear mold industry benefited

The economic situation in the world market is still not very optimistic about the various countries of the world are working to change the current economic situation in order to break through the constraints of market economy status quo . For its part, the industry 's efforts to effect the parties is very significant , manufacturing has been the point of the amount of China's industrial development is a very important part , holds many lessons for China, as a manufacturing country will not change the pattern of the short term , China's manufacturing power of transformation  Shorter Pipe Clip strategy is also being implemented in full swing among this year's development is a major manufacturing industry is also an important part of the mold is very optimistic that the process is constantly accelerating. From the current development trend of China's mold industry hardware point of view , in 2013 the development of China 's mold industry is significantly better than 2012 , then this trend will continue as a going better yet , let's look together , die mold our experts on 2013 forecast industrial situations. Chinese economy is in a growth phase transitions and critical period of seeking a new equilibrium . Mould market demand began to pick up , to the good development trend of increasingly uncertain estimated 2013 Chinese consumption and export growth will be roughly flat with 2012 , but the investment growth faces downward pressure , although the annual GDP growth rate of around 8 % of the expected insist on the possibility of it large, but by manufacturing overcapacity , rising costs , low profits and other factors, growth is expected to only be carried out cautiously pessimistic , full- year high to low very likely . Looking to 2013 , in the mold , the global economy will remain in a period of adjustment after the financial crisis , the overall situation may be slightly better than 2012 , but the situation is still complex , and uncertain factors increase the risk of continuing to carry out sluggish and slow growth is still the main tone. Supporting role in the mold industry transformation and upgrading of the manufacturing sector has been widely recognized , although less than last year's momentum of world economic recovery , the European debt crisis and the fermentation serious impact on China's economy , China's mold industry is still achieved rapid growth , according to the China Die network understanding China's mold exports reached $ 3.731 billion , an increase of 24.16% . our daily production and life in the use of a variety of tools and products , large machine tool base, body shell , an embryo as small head screws , buttons and various kinds of household appliances shell , all PE Electrofusion Pipe Fitting  closely related with the mold . Determines the shape of the mold shape of these products, processing quality and precision mold will determine the quality of these products. Because different materials for various products , appearance, size and purpose of the mold into the casting mold , forging , die casting mold , stamping mold and other non- plastic molds and plastic molds. 1 . Industrialized countries due to manufacturing costs and other reasons, including the high-end middle and low mold mold part of the demand mainly through external procurement . China's mold levels and export capabilities fully meet the need, and therefore a huge mold export market space.
2 ...... After 30 years of development, China's mold industry system is basically complete , greatly improve the technical level , management capabilities continue to progress. Outlook 2013 , by speeding up transformation and upgrading, enhancing innovation, improve product level, the mold industry growth of 10% is a safe . Meanwhile, as China's mold comparative advantage in international markets persists, the annual export growth rate of around 20% is still possible .
3 expand domestic demand to implement the strategy will promote the development of China's manufacturing industry . Which the development of the automobile , home appliances , IT industry , packaging , building materials, daily necessities , such as mold large user industry , the market will continue to provide a large space for the development of mold industry . For example, the automobile manufacturing process more than 90% using molds, auto-related molds accounted for more than one-third of China's total mold Germany, Japan , the United States accounted for more than 40% , mainly depends on the development of automobile molds launch of new models ; plastic products for more than 90 % owned by molding , plastic mold and therefore accounted for 45 % of the total of China's mold , plastic products in China 2012 nearly 60 million tons , and annual growth of 15 % to 20 %, according to the development trend of China's mold industry should do good correlation of preparation, production Plastic Adapter Union mould  and marketing arrangements to do a year . Mould domestic manufacturing industry occupies a special position in the manufacturing system, which determines the level of development of the overall level of manufacturing . Experts pointed out that "five " period, the overall goal of China's strategic emerging industries intelligent mold manufacturing equipment development is the development of intelligent mold to boost efficiency, precision and improve the overall level of high-performance molds to meet the " intelligent manufacturing " complementary required to drive the mold in order to improve the overall level of service of strategic emerging industries , making intelligent mold level has been greatly enhanced , and lay a solid foundation for China's mold industry in 2020 into the world die power.

Domestic mold industry needs to accelerate the transition to deal with the cost advantage of weakened

Nearly a decade , China's automobile industry has made considerable progress . Prospects Industry Research Institute , " China's auto production and sales demand forecasts and mold industry transformation and upgrading Analysis Report " shows that domestic car sales by 2001 the rapid increase of 2,358,500 to 18,505,100 in 2011 , a compound annual growth rate of over 20% , in which the automotive panel die demand CAGR car plastic pipe fitting mould  is up more than 30% . At present , China 's mold industry output value of over $ 100 billion industry, one of the main application as a mold downstream automotive industry, China is about 1 /3 of the mold products for the automotive service industry .
Although in recent years the domestic mold exports increasing level of international competitiveness has improved . But mostly concentrated on middle and low areas , low mold technical level, low value-added, high-precision molds also part dependent on imports , so the domestic mold industry in various fields to strengthen integration.
Throughout the development process, related industries and businesses need long-term perspective , the potential lower mind, pay close attention to new technologies, new technology research side , and gradually form a division of labor , there is collaboration in all areas of research and development pattern, introduced with proprietary mold products. Now China's mold industry through the introduction of foreign capital , absorb the advanced experience of foreign mold manufacturing , advanced technology and high-level talents , our mold design and manufacturing level has been greatly  Plastic Adapter Union mould improved. " With the increasing domestic demand in China can be expected to die by 2013 China will have a larger growth industry , especially the automotive industry, has led to the rapid development of China 's mold industry , promote the rapid transformation and upgrading of mold enterprise ." Luo Baihui mold experts believe , strengthen independent innovation in the industry change the growth mode , optimize the industrial structure, have a greater need high levels of mold machinery and equipment, providing a broad development space for the development of mold industry . More importantly , "five " the implementation of development policies and emerging strategic industries, regional development planning and policy to revitalize the equipment manufacturing industry will die industries are providing new growth point. With manufacturing in developed countries have to transfer to China , China's mold industry is facing a new round of development opportunities. Forecasts , and the internal and external drives Qi moving environment , to 2015, China's mold will reach 350 billion yuan sales value . Currently, China is facing the dual End Cap mould  pressures of technical superiority and developing countries , the price advantage of the developed countries. In the competitive advantage of high-end mold China mold industry to become a huge challenge , India, Thailand and Eastern European countries a few years , industry has developed very rapidly in recent mold , mold its price also has a strong competitive advantage , China 's mold industry , the cost of and price advantage will gradually diminish and eventually disappear.

Domestic mold industry to accelerate the integration process in various fields

In recent years, the domestic mold exports increasing level of international competitiveness has improved . But mostly concentrated on middle and low areas , low mold technical level, low value-added, high-precision molds also part dependent on imports , so the domestic mold industry in various fields to strengthen integration.
China mold industry after decades of accumulated technology and in recent years to increase international exchanges , pay close attention to technological innovation in production technology have achieved significant breakthroughs in business with more competitive , the  PE Electrofusion Pipe Fitting industry expects 2015 sales value of China's mold will reach 350 billion yuan .
Throughout the development process, related industries and businesses need long-term perspective , the potential lower mind, pay close attention to new technologies, new technology research side , and gradually form a division of labor , there is collaboration in all areas of research and development pattern, introduced with proprietary mold products. Now China's mold industry through the introduction of foreign capital , absorb the advanced experience of foreign mold manufacturing , advanced technology and high-level talents , our mold design and manufacturing level has been greatly improved. More importantly , "five " the implementation of development policies and emerging strategic industries, regional development planning and policy to revitalize the equipment manufacturing industry will die industries are providing new growth point. With manufacturing in developed countries have to transfer to China , China's mold industry is facing a new round of development opportunities. Forecasts , and the internal and external drives Qi moving environment , to 2015, China's mold will reach 350 billion yuan sales value . China's mold industry is currently experiencing competitive pressures are mainly price advantage and technological superiority of developed countries to developing countries , need to know not only the development and progress of industrial molds China , Southeast Asia and Eastern European countries in recent years, the development of industrial molds are very fast , its advantages in terms of mold price obviously, this weakens the cost and price advantage of China 's mold industry has always been a certain extent . In addition, Western Europe, Japan and South Korea on the strength of the high-end market, but also to mold China mold industry is facing enormous challenges , " With the increasing domestic demand in China can be expected to die by 2013 China will have a larger growth industry , especially the automotive industry , has led to the rapid  chinese mould development of China's mold industry , promote the rapid transformation and upgrading of mold enterprise . " Luo Baihui mold experts believe , strengthen independent innovation in the industry change the growth mode , optimizing industrial structure , have a greater need high levels of mold machinery and equipment, providing a broad development space for the development of mold industry. Although China is the largest producer of the mold , the mold is not producing power. Our metal mold industry is constantly exploring the development of innovative technology, precision molds , has been able to independently produce plastic molds for mobile phone cameras , multi-cavity molds, and other small modulus gear ; rear axle gear box car die casting , escalators overall pedal casting molds and other large sophisticated die casting mold and die casting automotive engine casing also achieved good results. However , the overall market in China's mold sophisticated high-end mold is still relatively dependent on imports , mainly middle and low product is still expanding market development will take time. However , on this basis , a serious shortage of research funding , research is weak , there is no conducive to innovation in public technical support system. To narrow the gap , we must increase research and development, based on innovation, improve the quality sectors of the economy . At present, China's mold industry is entering a critical period of development. The development of the manufacturing sector in particular, the automotive industry , to promote the domestic mold market continues to expand, our foreign customers to purchase the number of mold growing international trend of China's mold manufacturing gradually shift is obvious . China Die Mold Industry Association forecast that domestic market continues to improve, China's mold industry will maintain a growth rate of around 20 %. 2013 Government continues to hand steady growth, thus stimulating investment growth accelerated again. It is predicted that China Investment Association , the 2013 investment will be more than 45 trillion yuan . In recent years , the domestic mold industry investment and construction in full swing, as an economic phenomenon , has attracted more and more attention and attention. Mold industry cluster to optimize the industrial structure, promote industrial upgrading and transformation of economic growth, improve the level of economic development , enhance regional economic competitiveness and prosperity party people have a very important strategic significance.
1:100 driving effect according to the argument , to the end of 2013 , Chinese investment can be more than 45 trillion yuan , then mold industry new investment will account for about 1% , then, the mold industry, the scale of investment will reach 450 billion yuan , which is one can foresee good prospects . As China's economy continues to develop, China 's manufacturing industry has also begun to develop Chinese characteristics mold , which industry experts put forward eight requirements: 1 , creativity , innovation and development . Necessary part of the development of innovative technology industry for China's mold industry is concerned , this is the main thing.
2, the supply and demand cooperation for the upgrade. At this stage, China's mold industry is a relatively large supply  plastic coupler fittings mould and demand instability problem of excess production of low-end products , high-end products rarely now more critical in the transformation and upgrading . 3 , a boutique brand quality . Many products on the domestic market gradually die mature stage, and increase brand awareness can better provide a broader market for the mold . 4 , to promote low carbon green growth . Pollution prevention, energy conservation is a prerequisite for the development of the industry. 5 , self- regulate insurance harmony. The quality of the industry is to enhance the basic product . 6 , organization building specialization. Improve the professional talent pool mold industry is the focus of future development . 7 , the industry coalition advocating standards. Industry alliances and technical cooperation development is an excellent mold transition implementation. 8, the exhibition business expand horizons. The exhibition was held to carry out other activities , whether domestic or international , has a great space for the exchange industry .

Domestic mold industry system by significantly expanding the potential market is

The most important aspect is to support the development of national industry , and gradually practice coupled with enterprise reform , the front line of China's industry has a great help.
After years of industrial development, China mold manufacturing has made ​​certain achievements , such as the formation  2 inch pvc coupling mould of the car has "four " industrial system. Today, industrial production increasing demands for mold manufacturing also put forward higher requirements . China mold manufacturing is based on existing technology to accelerate research and development to meet market demand . China 's cheap labor cost advantage and overall good momentum of sustained and rapid economic development, China's mold industry to bring good development prospects , projected to 2018 , China became one of the world's largest mold manufacturing base.
Progress over the years in the mold industry , prompting the emergence of a large number of leading companies , such as automotive panel die there , " four people" , the mold industry has 95 companies were awarded the " China mold of key enterprises" ; in the industrial  plastic injection mould layout , China's mold industry is expanding to the mainland and north from the more developed Pearl River Delta, Yangtze River Delta region , there are some new mold production more concentrated areas. More importantly , China's mold industry is not only large , but also more abundant grade , large-scale , sophisticated, complex, long-life high-level representatives of the mold to mold the proportion reached 35% or more .
But the overall level of the mold industry is still lagging behind the international advanced level, mold output still can not meet the market demand mold , mold on the domestic market  electrofusion coupling mould to meet the rate of less than 80% , especially high levels of mold technology in high-end mold , to meet the rate of less than 60% .
Therefore , China's mold industry should vigorously develop advanced science and technology , widening the scope of application of technology in a timely manner will die of advanced technology into productivity to meet the growing demand of China's mold market and promote the rapid development of China's economy and growth .

The main categories of plastic molds

According to different molding methods can be divided into the corresponding requirements of the different process types of plastics processing molds , mainly injection mold , extrusion mold, plastic mold, high mold foamed polystyrene and the like. 1, plastic injection ( plastic ) molds it is mainly the production of thermoplastic products in the most common type of mold, plastic injection mold corresponding processing equipment is plastic injection molding , plastic injection molding machine in the  PE Electrofusion Pipe Fitting first heat heating barrel bottom melted and then push in the plunger or a screw injection molding machine , injection machine nozzle and the mold after the casting system into the mold cavity , and cooled and solidified plastic molded article obtained release . The structure usually consists of molded parts , injection system , the guide member , the introduction of some institutions , thermostat systems, exhaust systems, supporting members and other components. Manufacturing materials commonly used plastic mold steel modules, the material used mainly for carbon structural steel, carbon tool steel , alloy tool steel, high speed steel. Injection molding processing methods usually only suitable for hot plastic goods products production, injection molding process to produce a wide range of plastic products , from daily necessities of life to all kinds of complex mechanical , electrical appliances , vehicles and other parts are made of injection molding , it is the production of plastic products, the most widely used as a processing method . 2 , plastic compression molds
Including pressure injection molding and compression molding two structures mold type. They are mainly used for forming a class of thermosetting plastic mold , it corresponds to the device is a pressure molding machine. The plastic properties of the compression molding method , the mold is heated to a molding temperature ( generally 103 ° -108 °), and then compression-molding the powder into a good measure of the mold cavity and the loading chamber , closing the mold , heat and high pressure in the plastic viscous flow was softened , after a certain curing time setting, into a desired shape of the article . Pressure injection molding and compression molding except that End Cap mould  no separate loading chamber , before forming the first mold is closed , the room warms up in the feed of plastic viscous flow state was in the mold cavity pressure adjusting squeeze hardened molding. Compression molding of thermoplastic mold also used some special molten thermoplastic such as difficulty ( such as poly vinyl fluoride ) rough ( cold forming ) , high optical performance resin lenses , light foam nitrocellulose car steering wheel . Compression molds mainly by the cavity , chamber , guide mechanism , introduced parts, heating systems and other components. Pressure injection molds are widely used in packaging aspects of electrical components . Pressure plastic mold manufacturing and injection molds used basically the same material . 3 , plastic extrusion dies
Used to produce a continuous shape forming a kind of mold plastic products , also known as extrusion head, is widely used in processing pipe, bar, single wire, sheet, film , wire and cable coating , profiles , etc. . Corresponding production equipment plastic extruder, the principle is solid plastic is melted at a screw rotation of heating and pressurizing conditions of the extruder , plasticized by the particular shape of the die made ​​of the same cross-sectional shape of the die and continuous plastic products. Manufacturing materials are carbon steel, alloy tool , and some in the extrusion die components will need to wear resistant materials such as diamond studded . Extrusion process is generally applicable only thermoplastic engineering plastics products manufacturing , with injection molds and compression molds have obvious differences in the structure. 4 , plastic blow mold for molding plastic containers are hollow products ( such as beverage bottles , cosmetic containers and other packaging ) in a mold , in the form of blow molding process according 2 inch pvc coupling mould  to the principles of the main extrusion blow molding , injection blow molding, injection stretch blow molding ( commonly known as " injection stretch blow" ) , multi-layer blow molding, sheet blow molding. Blow molding hollow articles is usually referred to as a device corresponding to the plastic blow molding machine , blow molding is only applicable to the production of a thermoplastic product varieties . Blow mold structure is relatively simple, the materials used are manufactured mostly of carbon and more . 5 , plastic is plastic mold plastic plates, sheets of material forming a mold plastic products, some of the more simple , the principle is the use of a vacuum pump or compressed air method bloom forming method of the fixed die or punch in on plastic plates, sheets, in the case of heating and softening deformation posted on the desired mold cavity molding products , mainly for some daily necessities , food , toys and packaging products production. Plastic mold due to low pressure molding , mold material so multi-use aluminum or non-metallic materials , the structure is relatively simple. 6 , high foam polystyrene mold is the application of polystyrene ( consisting of polystyrene beads and foaming material ) forming a mold of various materials to the desired shape foam packaging materials. The principle is in the mold can be made of polystyrene can be molded into steam , including simple hand-operated hydraulic straight- mold and mold are two types of foam , is mainly used to produce industrial goods packaging products. Such mold material with aluminum, stainless steel, bronze and the like.

Mold industry focus the strategic restructuring

Standing in a global perspective , China's demand is a big country mold , mold is also a big country . However, to meet the economic development needs of the industry , you must import large quantities of high- mold products. Therefore , be sure to pay attention to the domestic mold industry strategic adjustment of product structure , improve market access threshold to avoid the low end of the homogenization phenomenon.
It is understood that sales of  Pipe Plug
  domestic mold industry as a whole has nearly 250 billion yuan . In recent years, the development of a new mold industry cluster development of the industry characteristics , the formation of Kunshan , precision mold production base industry clusters ;
However , due to the late start of China's mold industry technology , with the developed countries there is not a small gap. In recent years , China's mold industry through the introduction of  pipe reducing coupling mould foreign capital , absorbing the advanced experience of mold manufacturing , advanced technology and high-level talents , our mold design and manufacturing level has been greatly improved , the current development momentum of China's mold industry for the better , with the , the machine tool industry should pay attention to the new demands of its development , the two sides in order to achieve a win-win situation.
At this stage, given the importance of domestic machine tool industry is not in the mold industry equipment and domestic equipment market share in this market is low , the mold tool industry experts suggest should pay close attention to the development of mold industry , attention PE Electrofusion Pipe Fitting  to mold industry equipment market , should be long-term development starting from a strategic perspective to understand , and the full study and correct positioning of the market. Thus, the domestic mold industry in the future development , be sure to pay attention to the strategic adjustment of its product structure , so that the structure of the complex , high-precision high-grade die faster development .