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RECOMMENDATIONS from Closed Loop Partners`s Clean Up Recycled PET study suggest that there is a range of interventions in the current system, including capital investment in new technologies in material recycling facilities, improved packaging design for recyclables, and [the establishment of a More reliable agreement [and a series of initiatives, PET recycling can be substantially increased. Research shows that these initiatives can reduce recovery costs by 10% and increase MRF, follow-up processors and end-users by 21%. These changes may make the overall PET recovery rate increased by 6% per year, nearly 800 million pounds. The survey and analysis of the study was conducted by consultancy Resource Recycling Systems with the help of Plastics Recycling Association and the National Association of PET Containers Resources. [This study identifies a set of levers that can drive brand owners to use additional investments in PET recovery. If the correct combination of these levers can be pulled, the cost of recycling PET will decrease and the frequency of use will increase," said Nestlé North America Chief Sustainability Officer Nelson Switzer said in a statement. Closed Loop Partners claims to [invest in sustainable consumer goods, recycle and develop a recycling economy investment platform." Investors include many well-known companies, including Wal-Mart, Coca-Cola Company, PepsiCo and Procter & Gamble. Ron Gonen is managing partner at Closed Loop Partners. In a statement, he said: [We believe there are opportunities for investment to benefit both the PET recycling industry and the end user, as recycled PET is an ideal material to compete with new materials."

The high-speed plastic single wall corrugated pipe extrusion line is a manufacturing system designed to produce plastic pipes with a corrugated structure. These pipes are commonly used in various industries such as telecommunications, automotive, and construction. The plastic single wall corrugated pipes produced by this extrusion line offer several advantages. They are lightweight, flexible, and easy to install, making them suitable for various applications. These pipes also have excellent resistance to chemicals, UV rays, and impact, ensuring their durability and longevity. We are now going to introduce the latest generation of our production line. The extrusion line consists of several key components, including an extruder, a corrugator, and a cooling system. The extruder is responsible for melting and mixing the plastic material, which is then fed into the corrugator. The corrugator uses a series of molds to shape the molten plastic into a corrugated structure. The cooling system cools down the pipes to ensure their dimensional stability.

Plastic is amazing. But like anything, you can have too much of a good thing. When plastic was invented in the 50s it was seen as a wonder – material. It`s cheap to produce, light, strong and can be moulded into a huge variety of shapes and sizes. Pretty much overnight, plastic transformed our world, in many ways for the better, but in many ways for the worse. 70 years later and the world is drowning in the stuff. Of all the plastic ever produced only a fraction of it has been recycled. When it gets into the natural environment, it can destroy habitats, kill animals that eat it and breakdown into micro-plastics; of which the impact on the environment and on our health we don`t fully understand. The best way of protecting the natural environment and our health is to recycle plastic responsibly and to reduce how much we use where possible. Not all plastics can be recycled, though. Plastic is often stamped with a number from 1 to 7 which will tell you if you can or can`t recycle that item. Read on to find out more about the types of plastic out there. How to recycle Empty and rinse the container and recycle from home, at work or on the go. There`s no need to remove bottle labels – this is done at the recycling plant by special machinery. How to recycle Recycle at home, at work or on the go. Flimsy plastics (plastic bags and film) can`t be recycled from home, but most supermarkets have plastic bag recycling points where you can drop these off for recycling. How to recycle PVC can rarely be recycled and definitely can`t be recycled from home. Put smaller items, like medicine blister packs in the bin. Larger things, like gutters and window sills can go to your local tip or reuse and recycling center. How to recycle Most councils don`t collect this plastic for recycling, so you`ll need to throw it in the bin. Terra Cycle does deal with lots of hard-to-recycle items though, so check them out here. Things like plastic bags, bread bags, films and frozen veg bags can be recycled at supermarket plastic bag recycling points. How to recycle PP is collected by lots of councils for recycling. If the container did contain food or liquid, make sure you`ve rinsed it clean. How to recycle Polystyrene can`t be recycled and should go in your rubbish bin. Avoid it if possible or try and reuse it. How to recycle This plastic can`t be recycled from home. If you have things like DVDs and sunglasses you no longer need, donate them to a charity shop if they`re in good condition or share on platforms like eBay, Freegle, Gively or many more. Terra Cycle offers a CD and DVD recycling programmer which you can use. Otherwise, these things will need to go in a rubbish bin.

The selection of the proper screw for a given processing environment should be based on the resin or resins to be processed. If a number of different resins are being processed with the same screw, that screw should be designed to optimize performance, allowing for all the resins to be processed with reasonable success. In order to select the proper screw design for a particular resin (or resins), an understanding of certain factors regarding the resins and their effect on processing is essential. There are three major factors relating to the resins to be processed that significantly influence the design of a screw and the material that should be used in its manufacture: Degree of Crystallinity, Viscosity and Additives in the resin. DEGREE OF CRYSTALLINITY The degree of crystallinity of a resin helps determine the resulting physical properties of a molded part and are important to the parts designer. Equally important to the plastics processor is the fact that crystallinity also influences the manner in which the resin changes from a solid to melt. The differences in melting characteristics between highly crystalline and less crystalline (or amorphous) resins include their resistance to deformation as heat is applied, their sensitivity to thermal conductivity and their sensitivity to shear, regardless of source. 1. Melting Point - One of the differences between the two types of resin (crystalline and amorphous) is their resistance to deformation as their temperature increases. Both resins soften somewhat at the glass transition temperature but the amorphous resin continues to soften gradually until it reaches a fluid state. Amorphous resins have no defined melting point. In contrast, the more highly crystalline resins remain in a relatively solid state until the temperature reaches their melting point. At the melting point temperature, crystalline resins quickly change to melt. (See Figure 1) 2. Thermal Conductivity - All plastics are poor conductors of heat. Amorphous resins are especially slow to absorb heat and increases in temperature. Amorphous resins tend to degrade or burn (rather than melt more quickly) when rapidly exposed to higher temperatures. (See Figure 2) 3. Shear Sensitivity - As a consequence of the two differences in melting characteristics discussed above, it can be understood why amorphous resins are considered to be more shear sensitive. High shear rates result in rapidly increased resin temperatures which amorphous resins do not tolerate well. It is well known that excessive melt temperatures in some resins can cause residual molded-in stresses that detract from part appearance or reduce the mechanical strength of the parts. From these considerations, it may be concluded that amorphous resins should be gradually changed from solid to melt. Screws with longer transition zones and deeper channel depths with lower compression ratios help protect amorphous resins from burning or degrading and help ensure optimum physical properties in the completed parts. In contrast, the higher crystalline resins can be processed more effectively by screws with shorter transition zones, more shallow channel depths and higher compression ratios. VISCOSITY (MELT INDEX) Viscosity, or the resistance of a melt to flow, is measured by a capillary rheometer (or extrusion plastometer) and is expressed as the Melt Index of a resin. A high melt index (MI) value corresponds to a low melt viscosity, and vice versa. A fractional MI resin refers to a resin with a MI of less than one. MI is also a measure of molecular weight, but because MI is easier to determine, it is often used rather than the molecular weight specification. A lower MI indicates a higher molecular weight, and vice versa. High molecular weight (low MI) resins are more viscous and process differently than medium or high MI resins. High MI resins are somewhat more difficult to melt. The higher the Melt Index, the more shallow the channel depths of the screw. More viscous resins require deeper channel depths. RESIN ADDITIVES Additives to thermoplastic resins influence the design of the screw and the materials from which the screw is made and, in addition, bear on the selection of cylinder lining materials. Some additives influence only the screw geometry while other additives affect geometry and materials to be used in making the screw or barrel lining. Reinforcement materials can affect all three considerations. Additives may be grouped into categories based on their impact on screw design and screw and barrel material selection. 1. Additives Affecting Screw Geometry All reinforcements and fillers affect screw geometry. They include fibers made from glass, carbon, graphite and other materials such as calcium carbonate, silica, glass spheres, mica, talc, powdered metals, ceramic, baryte (barium sulfate). anhydrous calcium sulfate and carbon black. Many other inorganic materials are used for fillers. These additives increase the viscosity of the melt and require screws with deeper channel depths and somewhat lower compression ratios. This design change is especially important with the use of fibers to prevent their breakage and lessen their effectiveness. 2.Additives Affecting Screw & Barrel Material Special screw materials (and barrel linings) are usually selected to aid in minimizing abrasive or corrosive wear. All of the abrasive reinforcements and fillers require that screws be made from special wear-resistant steels or been capsulated with an abrasion-resistant coating. The more abrasive additives include glass fibers, calcium carbonate, ceramic and metal powders, and some colorants such as titanium dioxide Premium barrel linings containing vanadium and tungsten carbides (and others) are used to protect those components against excessive wear. Other additives are corrosive and require screws made with corrosion-resistant alloys or special coatings. Flame retardants and coupling agents can develop a variety of corrosive acids at high temperatures. Barrel linings made from relatively iron-free materials and nickel alloys are necessary to avoid serious corrosive wear.

The extrusion molding temperature of plastic pipe production lines is a necessary condition to promote the plasticization of molding materials and the flow of plastic melts, which has a very important impact on the plasticization of materials and the quality and yield of products The theoretical temperature window of plastic extrusion is between the viscous flow temperature and the degradation temperature. To correctly control the extrusion temperature of the P plastic pipe production line, it is first necessary to understand the relationship between the temperature limit of the processed material and its physical properties. Only by understanding its characteristics and patterns can a better temperature range be selected for extrusion molding. Therefore, the temperature setting of each segment should consider the following aspects: firstly, the performance of the polymer itself, such as melting point, molecular weight size and distribution, melt index, etc. Secondly, consider the performance of the device. In some devices, the temperature of the feed section has a significant impact on the host current. Once again, observe whether the surface of the extruded tube blank is smooth by observing the tube mold. Judging whether there are bubbles or other phenomena.

BYD bid farewell to the fuel era and bring new opportunities to the high-speed hybrid engine market! On April 3rd, BYD announced on its official WeChat account that "it will stop the production of fuel vehicles starting from March 2022. In the future, BYD will focus on pure electric and plug-in hybrid vehicle businesses in the automotive sector." With the disclosure of the announcement, it also means that BYD will become the first domestic and even global car company to announce the cessation of fuel vehicle production, which is equivalent to announcing the arrival of a new era in the automotive industry. So what impact does the arrival of the new car era have on the high-speed mixer market? Firstly, it has reduced the consumption of fossil fuels, especially oil, by automobiles, providing more development space for the plastic industry that is completely linked to oil. As we all know, gasoline and plastics were developed based on petroleum. By reducing the consumption of petroleum by cars, more oil will flow to the plastic industry, thus enabling better development of the plastic market. As one of the essential equipment for plastic processing, high-speed mixer is bound to obtain more orders; Then, the development of new energy vehicles will inevitably drive the vigorous development of automotive batteries, and the processing of positive and negative electrode materials for batteries also relies on the key equipment of high-speed mixers. So, the cross generational change of fuel to electricity not only brings about changes in the automotive industry, but also affects other changes such as plastic, plastic processing equipment, and battery processing equipment. Kede Machinery uses high-speed mixers as the entry point, and can also enjoy the benefits brought by this transformation.

Why do we use high-speed mixers and high-speed mixers for PVC resin powder and calcium carbonate The surface activity of PVC epoxy resin powder and calcium carbonate is a process with strict processing regulations. Mix them together, and if they cannot reach a certain temperature and time, there may be poor plasticization and agglomeration. PVC epoxy resin powder and calcium bicarbonate need to be pre mixed before they can be mixed at high speed. Generally, low mixing machines cannot achieve the effect of short time, rapid heating, high work efficiency, and labor saving. The mixing time of the high-speed mixer is ten minutes for each pot, and the opening of the meter cover and feeding are all operated pneumatically. Generally, the low mixer must be manually operated by manual labor.

With the expansion of the application scope of plastic pipe production line products, the types of plastic pipes are also decreasing. Apart from the early development of PVC pipes for supply and drainage, chemical industry pipes, agricultural drainage and irrigation pipes, and polyethylene pipes for gas use, in recent years, PVC core layer foam pipes, PVC, PE, double wall ripple pipes, aluminum plastic composite pipes, cross-linked PE pipes, plastic steel composite pipes, polyethylene silicon core pipes, etc. have been reduced. 1)Rigid polyvinyl chloride (UPVC) pipes 2) Chlorinated polyvinyl chloride (CPVC) pipes 3) Polyethylene (PE) pipes 4) Crosslinked polyethylene (PE-X) pipes 5) Three types of polypropylene (PP-R) pipes 6) Polybutylene (PB) pipe 7) Engineering plastic (ABS) pipes 8) Fiberglass reinforced plastic (RPM) pipes 9) Aluminum plastic composite (PAP) pipes 10) Steel plastic composite (SP) pipe, Consumption of plastic pipe production line products and pipe fittings. Application is a cross industry and cross part style engineering. The original data belongs to the kerosene chemical industry. Provide the necessary specialized materials, create new materials for resettlement and the construction materials industry, and apply the products in the development of housing, agriculture, and urban common methods.

Is it better to have multiple molds and more PE pipe production line equipment? Let's briefly say that the the first mock examination four out PE pipe production line, that is, the the first mock examination produces four lines of pipes. On the premise of ensuring product quality, this equipment reduces the equipment input cost, plant input cost and production input cost, greatly improving the output and reducing the production time. The diameter range of production pipes is 16mm-32mm. The one out four PE pipe production line has increased production by 70% while maintaining the product quality of the one out two PE pipe production line. There is no electricity consumption in the cutting machine part of the one out four pipe line. Total noise level: After the production line starts normally, the basic noise level is reached. The one out four PE pipe production line has no cutting debris and basically no dust pollution due to the sawblade cutting part and automatic cylinder pushing. For two pipelines and water supply pipelines, if the production capacity is 6 tons per day, the speed of a single pipeline must be above 20 meters, which is impossible to achieve in reality and cannot be cooled down, and cutting at a line speed of 20 meters is also impossible.

How are double walled corrugated pipes connected. Many people have this confusion: how does it connect? The most suitable connection method for double wall corrugated pipes is the flared connection. Those who have seen this type of pipe will find that its two ends are different, one is a flared structure, and the other is a small end structure. Through this structure, two pipes can be perfectly inserted together, with one end of the expansion facing upstream of the drainage and the small end facing downstream of the drainage, ensuring a safer connection without leakage. Nowadays, many corrugated pipe brands can provide online double-layer expansion technology, but when you cut the socket into pieces, you will find that most of them are unqualified, especially if the two layers cannot fully fit, which poses a great risk. And the sockets of our product perfectly fit the two layers from beginning to end. For different sockets, you can easily see the differences. Imagine what would happen if you buried unqualified corrugated pipes underground. In addition to appearance, more consideration is now being given to online double layer sockets to provide the best corrugated pipe solution!

Daily maintenance of screw barrel of injection molding machine Daily maintenance of material barrel 1. Do not start the machine when the barrel screw has not reached the pre-set temperature. 2. To prevent metal fragments and debris from falling into the hopper, if processing recycled materials, a magnetic hopper needs to be added to prevent iron filings from entering the material barrel. 3. When using anti saliva, it is necessary to ensure that the plastic inside the material barrel is completely melted to avoid damaging the transmission system parts when the screw moves back. 4. When using new plastic, the remaining material from the material barrel should be cleaned thoroughly. 5. When the temperature of the molten plastic is normal but black spots or discoloration are constantly observed in the injection molded product, the screw should be checked for wear on the rubber head, rubber ring, and rubber meson. 6. When product injection molding, try to make the material plasticize evenly to reduce the transmission torque borne by the screw and increase its service life.

Our company has launched a new business: providing new molds for corrugated pipe manufacturers who are using old equipment, regardless of whether you use any brand of corrugated pipe machine, whether it is a vertical molding machine or a horizontal molding machine. When you encounter such problems: 1. Your old pipe waveform may not be suitable for the new PE/PP material, as the material performance has greatly improved. 2. Your competitors can provide corrugated pipes with lower meter weight, which poses a threat to your market. √ 10 years of experience in waveform design and optimization of corrugated pipes. Currently, over 700 corrugated pipe equipment have been installed in 36 countries; √ Based on the largest and most fiercely competitive corrugated pipe market, Zhongyun has helped numerous customers achieve success in their corrugated pipe business through extreme optimization of pipe waveform; √ High precision molds/modules manufactured using world-class CNC machine tools, such as Toshiba from Japan, DMG MORI Flexible Line from Italy, PAMA from Italy, Swiss+GF+Mikron, and MAZAK from Japan, with a machining accuracy of 0.003mm; √ Use advanced European instruments for quality control in the constant temperature testing room, such as Sweden Hexagon's advanced coordinate measuring instrument, Leica laser tracker, and Romer joint arm. The detection accuracy is 0.0018mm.

In midsummer, when you go to the processing workshop, you usually see technicians sweating profusely and often smell the smell of engine oil. At the beginning of this summer, the company decided to install a central air conditioning system with fresh air function in the processing workshop to improve the working environment of employees and improve product quality. Recently, the air conditioning equipment has been installed in place and fresh and comfortable air has been continuously supplied to the workshop. The indoor temperature in the processing workshop can be controlled within a comfortable range of 24-26 degrees. At the same time, the fresh air system has effectively improved the air quality, making the entire workshop exceptionally fresh and cool. The temperature of precision workpieces is also better maintained to avoid deformation, further improving the processing quality of the equipment. The brand new air conditioning equipment has brought a more comfortable and comfortable working environment to employees. This is a positive measure taken by the company to care for employees and care for their lives. It has been recognized and praised by the majority of employees, greatly enhancing everyone's work enthusiasm and enthusiasm. Employees are the wealth of a company and the foundation for its development. Zhongyun always cares about the warmth and well-being of its employees and strives to create a good work and living environment for them. The company carefully selects gifts during holidays to improve employee welfare; The restaurant keeps up with the times in terms of decoration and continuously improves the dining environment; Preparing cool and delicious drinks and fruits for employees in hot weather, preventing heatstroke and cooling down... These detailed actions are the best manifestation of the company's care for employees. The attention and emphasis on subtle aspects condenses the company's deep care for its employees. The company will continue to improve the working and living environment of its employees, continuously improve their happiness index, and enhance their sense of belonging and pride.

Last month, our company successfully tested the ZC-300H model from a British customer in the final assembly workshop, producing double wall corrugated pipes with OD350mm and ID110mm specifications. The client is a large plastic pipeline manufacturer in the UK. This equipment is equipped with a German Flanders gearbox, Siemens extruder AC motor, Siemens servo motor, as well as a high-quality vacuum pump system and mold improvement. As of now, we have successfully completed two trial production of OD350mm and ID110mm double wall corrugated pipes, and the customer has highly praised the production line. ZC-300H can produce: 1. Power protective sleeve: Outer diameter 63/75/90/110/120/160/180/200/250/315mm. 2. Drainage double wall corrugated pipe: Inner diameter 100/150/200/250/300mm. These are the most popular sizes on the market. Welcome to your inquiry.

Polyvinyl chloride: After regeneration, the color changes significantly, with a light brown color after one regeneration extrusion and almost opaque brown color after three rounds. The specific viscosity remains unchanged during the second cycle, but tends to decrease after more than two cycles. Whether it is hard or soft polyvinyl chloride, stabilizers should be added during regeneration. To make the reprocesses shiny, the mixed ABS1% to 3% can be added during regeneration. Polyethylene: After regeneration, the functionality of polyethylene decreases and the color turns yellow. After multiple extrusions, the viscosity of high-density polyethylene decreases, while the viscosity of low-density polyethylene increases. Polypropylene: During one regeneration, the color remains almost unchanged and the melt index increases. More than twice the color intensifies, but the melt index still increases. After regeneration, the fracture strength and elongation have decreased, but there are no problems with use. Polystyrene: After regeneration, the color turns yellow, so recycled polystyrene is generally colored. The degree of decline in various functions of recycled materials is directly proportional to the number of regenerations. The fracture strength does not show significant changes when the dosage is less than 60%, and the ultimate viscosity does not show significant changes when the dosage is less than 40%.

The material performance of plastic pipe production lines is an important basis for quality assurance. The molecular weight and distribution range of resin have a significant impact on the performance of the product. The lower the molecular weight, the wider the distribution range, and the greater the MI (melt flow rate) reflected. High compression density. The service life of shear plasticization decreases with the decrease of pipe strength, making it more prone to quality problems such as pipe breakage and rapid aging. Therefore, well-known domestic floor heating companies generally use high-quality imported PE-Xa special resins such as XL1800 and 8100X, with an MI (190 ℃, 21.6kg) of about 2g/10mm. Manufacturing PE-Xa pipes with domestically produced LLDPE7042 is cheap, but the MI is too large, the molecular weight is low, and the density is low, resulting in low strength, rapid aging, and short service life. Therefore, it is easy to burst. After use, the pipeline is cut through rework, so reconnection cannot be avoided. The resin has a high volatile component and small holes are opened on the surface or hidden areas of the pipe, with varying degrees of stress concentration, which affects the high temperature resistance of the product and shortens its service life. Therefore, in addition to the volatile substance certification of resin processing enterprises, plastic pipe production lines will not be affected by moisture or water pollution during transportation and storage. At the same time, attention should be paid to the order and techniques of supply to ensure the mixing time and uniformity of raw materials, generally controlled within 15 minutes, so that the resin and various additives are evenly dispersed. Ensure stable product performance and long service life. The amount of crosslinking agent added should be accurate, and the degree of crosslinking should reach a certain height, which can meet the standard requirements and ensure the stable quality of the crosslinking agent. If the performance of the crosslinking agent is poor, only a large amount of addition is needed to ensure the degree of crosslinking. The residual monomers after crosslinking will affect the performance and service life of the product. Therefore, good domestic underfloor heating enterprises generally adhere to the use of expensive but high-quality plastic pipe production line joint agents. Crosslinking is the process of generating free radicals. In order to capture residual free radicals and eliminate unstable atoms after crosslinking, additional main and auxiliary antioxidants were added to control thermal aging, while also using the pipeline during the process. It can effectively prevent exposure to high temperatures. Under aging and oxidation, the performance of the material gradually decreases and its service life can be extended.

PE pipe equipment has different forming structures to choose from to adapt to different materials, production speeds, and quality requirements. At present, there are two common forming equipment for PE pipe equipment: cylindrical sizing sleeves and sheet composite sizing sleeves. The reasonable selection of pipeline installation equipment plays an important role in pipeline quality and production economy. Among these two sizing devices, the cylindrical sizing sleeve is widely used and has a wide range of applicability. For cylindrical sizing sleeves, the stability and uniformity of the water flow introduced by the water ring directly affect the extrusion quality of the PE pipe device, and the cooling rate of the molten material in the sizing sleeve is the internal quality. influence. Pipe wall. The sheet-like composite sizing sleeve is mainly used for producing small diameter high-speed extruded PE pipes, but the extrusion speed can be above 35m/min depending on the pipe diameter and processing material. The sheet-shaped sizing device consists of multiple thin copper sheets, with a circular sizing hole in the middle and a support on the outside. The distance between each layer of thin copper plate is regularly distributed along the direction of billet introduction. The distance gradually increases, and the distance between the copper plates near the introduction end of the billet narrows, preventing the plasticized billet from accumulating between the sheets and being squeezed out. You can gradually increase the distance.

The most suitable connection method of double-wall bellows is flared connection. Anyone who has seen this type of pipe will find that its two ends are different, one is a flared structure, and the other is a small end structure. Through this structure, the two pipes can be perfectly connected, with one end of the flare facing the upstream of the drainage, and the small opening facing the downstream of the drainage, so as to ensure that the connecting part is safer and leak-free. Now many bellows brands can provide online double-layer flaring technology, but when you cut the socket into pieces, you will find that most of them are unqualified, especially if the two layers can not fit completely, which has a great risk. The two layers of our socket fit perfectly from beginning to end. For different sockets, you can easily see the difference. Imagine what will happen if you use unqualified corrugated pipes buried underground. In addition to appearance, now more attention is paid to online double-layer sockets. Let Zhongyun Group, which provides the best bellows solution, help your bellows business!

two types of pipe corrugator: Internal blow moulding Vacuum forming Blow Moulding: This technology consist of blowing low pressure (0,1-1,5 bar) through the die head spider into the center of the continuously extruded hot plastic tube. The air is retained by a plug with metallic or silicone washers. The hot plastic material is expanded by the internal air pressure against the corrugation machined in the mould blocks which chill and holds the tube against the moulds to provide the desired geometry. Corrugated products formed by internal air must have constant I.D. dimension. Vacuum forming: This technology consists of pulling the hot plastic tube against the mould blocks by vacuum suction applied through the moulds applied to the plastic tube outside diameter surface. Vacuum from the moulds keep the tube against the moulds to provide the desired geometry. Corrugated products formed by vacuum may have variable I.D. dimensions. Applications cable protection TV, telephone glass fiber electricity control and computer cables automobiles, machines and airplanes medical applications washing machines dishwasher

How to connect double wall corrugated pipes? Many people have such a problem on Baidu or Google. For people in the industry, this is a simple question; for people outside the industry, some people ask this question. Although the problem is simple, we are still willing to explain it to everyone. Double-wall corrugated pipes are not hot-melt sockets, hot-melt butt joints, electric fuse sockets, etc., like PE solid-wall pipes, because the structure of PE solid-wall pipes is relatively simple and can be applied to a variety of connection methods. Double-wall corrugated pipe, also called HDPE double-wall corrugated pipe, has a smooth and flat inner wall and a corrugated outer wall. Its main purpose is drainage and sewage. Due to the special structure of the crest and trough on the outer wall of the double-wall corrugated pipe, it is not easy to perform electrothermal fusion connection. The most suitable connection method for double wall corrugated pipes is the socket connection. Friends who have seen this kind of pipe will find that the double wall corrugated pipes are different at both ends, one is a flared structure, and the other is a small head structure. The two pipes can be perfectly inserted together through this structure, and it`s smart to make flared end towards to the drainage upstream, and the small end towards the drainage downstream, thus ensure the connection part much more safety from leakage.