Wholesale PE Fittings Manufacturer - Choose Dengquan Plastic Industry for Better Cost Performance. In our daily lives, PVC pipes are used extensively. PVC, which stands for polyvinyl chloride, is primarily composed of polyvinyl chloride, with additional components added to enhance its heat resistance, toughness, ductility, and other properties. PVC is a widely loved and commonly used synthetic material today. Below, the editor from Dengquan Plastic Industry will briefly introduce PVC pipe specifications and prices. PE pipes are currently widely used plastic pipes, surpassing traditional metal and concrete pipes in usage. Almost all new construction projects choose PE pipes as water supply pipes. It can be said that in terms of performance, PE materials far exceed traditional materials. Additionally, PE pipes still occupy an advantageous position in terms of cost and transportation, which explains their popularity among the public. Dengquan Plastic Industry is a professional manufacturer of PE pipes, introducing advanced production technologies from both domestic and international sources. The annual designed production capacity reaches 50,000 tons, with a full range of specifications and models, ensuring ample supply and raw material production. Products are also tested to meet national and enterprise standards. Dengquan Plastic Industry has 20 years of experience in the pipe market, better meeting various customer needs, making it one of your best choices. 1. Drainage pipe materials should be selected based on the nature of the drainage, components, temperature, groundwater erosion, external loads, soil conditions, and construction conditions. When conditions permit, underground plastic drainage pipes should be prioritized. The following guidelines should be followed: for gravity flow drainage pipes, underground plastic pipes, concrete pipes, or reinforced concrete pipes should be selected; drainage pipes leading to community wastewater treatment facilities should use plastic drainage pipes; for special sections such as crossing culverts and rivers, or pressurized pipe sections, steel pipes or cast iron pipes can be used. If using plastic pipes, they should be additionally fitted with a metal casing (the casing diameter should be 200mm larger than the outer diameter of the plastic pipe); when the drainage temperature exceeds 40 degrees Celsius, metal drainage pipes or high-temperature resistant plastic pipes should be used; pipelines for transporting corrosive wastewater can use plastic pipes; the ring bending stiffness of plastic drainage pipes under roads and driveways should not be less than 8kN/sqm, while those under non-traffic areas in communities and other locations should not be less than 4kN/sqm. 2. Drainage pipes inside buildings should use plastic drainage pipes and fittings, or flexible joint cast iron drainage pipes and corresponding fittings. 3. In environments where the temperature may fall below 0 degrees Celsius, metal drainage pipes should be used; drainage pipes with continuous or frequent drainage temperatures exceeding 40 degrees Celsius, or instantaneous drainage temperatures exceeding 80 degrees Celsius, such as wastewater drainage systems in public bathrooms, hotels with hot water supply systems, drainage systems for high-temperature drainage equipment, and horizontal branches and horizontal risers in public building kitchens, should use metal drainage pipes or high-temperature resistant plastic drainage pipes. 4. Pressure drainage pipes can use pressure-resistant plastic pipes, metal pipes, or plastic-coated composite steel pipes. 5. For buildings with high standards or in environments requiring noise control, if the noise from the water flow in ordinary plastic drainage pipes does not meet the noise control requirements, corresponding air sound insulation or structural sound insulation measures should be taken, such as using specialized sound-absorbing pipes and fittings, adopting sound insulation-effective wall materials (solid walls, lightweight partition walls, sound insulation walls filled with foam plastic, etc.), installing rubber pads on pipe brackets, wrapping sound-absorbing insulation materials around the pipe walls where they pass through floors, and setting up vent pipes for fixtures. 6. When selecting plastic drainage pipes for laboratories, teaching buildings, or hospitals that discharge acidic or alkaline wastewater, attention should be paid to the corrosion of the wastewater's acidity, alkalinity, and chemical composition on the plastic pipe materials and joint materials. 7. In high-rise buildings with a height exceeding 100 meters, drainage pipes should use flexible joint cast iron drainage pipes and their fittings. 8. Vent pipes can use plastic pipes and flexible joint cast iron drainage pipes. 9. Connection methods: (1) For the connection of UPVC, CPVC, SNA+PVC pipes and fittings, it is advisable to use matching adhesives for socket bonding; vertical pipes can also use elastic sealing rings for connection. PVC water supply pipe specifications mainly include: 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630, with 110 being the most commonly used specification. Many people also care about the wall thickness of the water supply pipe. In fact, the wall thickness of water supply pipes varies under different pressure ratings, making it difficult to summarize in one sentence. However, manufacturers usually have specific tables to address this issue. Therefore, if you want to understand more in-depth questions such as wall thickness, it is better to consult the manufacturer's customer service. PVC water supply pipes come in a variety of specifications and models, mainly related to their performance. Due to characteristics such as strong corrosion resistance, low fluid resistance, high mechanical strength, hygiene and non-toxicity, good water tightness, long service life, and light weight, PVC water supply pipes are used in many projects, naturally leading to a wide range of required specifications, which manufacturers are eager to fulfill by producing various specifications of PVC water supply pipes for selection. Are there any installation requirements for PVC pipes? Proper installation of PVC pipes can significantly improve water flow, preventing issues such as poor flow and blockages. Additionally, aesthetics must be ensured, so the installation and laying of PVC drainage pipes also require various methods and skills. Below are the installation requirements and specifications for PVC pipes shared by the PVC pipe manufacturer. 1. The fusion joint area of the electrofusion fittings and pipes must be kept dry. 2. The connection surfaces of the pipes and fittings must be kept dry, clean, and free of oil. 3. The cut ends of the pipes must be perpendicular to the pipe axis. Pipe cutting is generally done using pipe shears or pipe cutting machines; if necessary, a sharp hacksaw can be used, but burrs and sharp edges must be removed from the cut pipe ends. 4. The hot melt tool should be powered on, and operation can begin only when the working temperature is reached and the green indicator light is on. 5. During heating, the pipe ends should be inserted into the heating sleeve without rotation, to the marked depth, while simultaneously pushing the fittings onto the heating head to the specified marked position. The heating time should follow the instructions provided with the welding tool. 6. Once the heating time is reached, the pipes and fittings should be immediately removed from the heating mold at the same time and inserted straight and uniformly to the marked depth without rotation, forming a uniform flange at the joint. 7. Within the specified time, the freshly welded joint can still be adjusted, but it must not be rotated. 8. When welding elbows or tees, the orientation should be noted according to the design drawings, and the positions should be marked along the linear direction of the fittings and pipes. 9. The standard heating time for electrofusion connections should be provided by the manufacturer and adjusted according to changes in environmental temperature. 10. During pipe installation, bending should not occur. When passing through walls or floors, do not force adjustments. When laying with other metal pipes, the clearance should be greater than 100mm, and polypropylene pipes should be placed inside the metal pipes. 11. Indoor exposed pipe installations should be done after the civil decoration is completed. Before installation, it should cooperate with civil construction to correctly reserve holes, and the size should be 50mm larger than the outer diameter of the pipe. When pipes cross floors, steel sleeves should be installed, with the sleeves protruding 50mm above the floor. 12. Strict waterproof measures should be taken when pipes cross floors or roofs, with fixed supports set on both sides of the crossing points. 13. Pipes buried beneath floor layers and inside walls should undergo pressure testing and acceptance inspections for concealed works and record keeping. 14. When pipes pass through foundation walls, metal sleeves should be installed to ensure your installation is more secure. Introduction to PVC Pipe Specifications PVC can be divided into soft PVC and hard PVC. Hard PVC accounts for about two-thirds of the market, while soft PVC accounts for one-third. Soft PVC is generally used for flooring, ceilings, and the surface layer of leather. However, due to the presence of plasticizers in soft PVC (which is the distinction from hard PVC), it can become brittle and is not easy to preserve, thus limiting its range of use. Hard PVC does not contain plasticizers, hence it has good flexibility, is easy to shape, is not brittle, is non-toxic and non-polluting, and has a long shelf life, making it highly valuable for development and application. PVC has poor combustion performance; it extinguishes when removed from fire and is classified as a flame-retardant plastic. Furthermore, it has good electrical insulation properties, making it suitable for protective sleeves for wires and cables. PVC pipes have high resistance to water pressure, external pressure, and impact strength, making them suitable for various piping projects, and their applications are indeed widespread. Factors Affecting PVC Drainage Pipe Prices PVC pipe prices vary under different conditions and demands. For example, different specifications, such as pipe diameter and wall thickness, will lead to different prices. Additionally, different brands have different market positioning, and there are differences in materials used, hence varying quality and price. It is essential to note that when purchasing PVC drainage pipes, it is crucial to buy reliable quality, as the price of PVC pipes themselves is not high, and the differences between brands are not significant. However, quality differences could lead to more losses. Therefore, the quality of PVC drainage pipes is of greater importance. Factors Affecting PE Pipe Prices 1. From the perspective of PE pipes themselves, the raw material is a decisive factor in pipe pricing. Some PE pipe manufacturers use recycled materials to reduce costs, which may not meet pressure standards, and the stretch length may not meet requirements, especially regarding hygiene. Moreover, pipes made from recycled materials have rough inner walls and contain impurities. Although this reduces material costs, the quality is significantly affected. Therefore, when purchasing PE pipes, it is crucial to understand market conditions and avoid purchasing overly cheap pipes. 2. Regarding the types and specifications of PE pipes, they are used in various applications, such as water supply pipes, conduit pipes, and corrugated pipes. These pipes differ in structure, technology, and performance, resulting in cost differences. People need to determine the price level based on the specific type of pipe, and the variations in pipe diameter, wall thickness, length, and material usage will also affect the price level of PE pipes. How much does PVC pipe cost per meter? This is a common question among PVC pipe buyers. The price per meter of PVC pipe is closely related to product categories, specifications, models, manufacturers, brands, and quality. Therefore, this question is relatively vague. Understanding these factors allows for specific pricing based on the actual situation. Prices for different types of PVC pipes can vary greatly. Below, I will provide examples of PVC water pipe prices per meter. Generally speaking, the approximate prices for PVC water pipes by manufacturers are: 50*2 of 4=5.5 RMB/m, 75*2.3 of 6=8 RMB/m, 110*3.2 of 14-17 RMB/m, 160*4 of 30-32 RMB/m, 200*5 of 50-54 RMB/m (the diameter following indicates wall thickness in mm). The above prices are for market reference only. PVC pipes are not only used in our daily lives but are also commonly used in industry. Some large buildings have underground pipelines made of PVC, differing only in specifications from those used in households. Therefore, the application scope of PVC pipes is very extensive. If you are very interested in this topic, I encourage you to continue reading as I will provide a detailed introduction to the prices and specifications of PVC plastic pipes. The price of PE100 water supply pipes is determined by various factors, including manufacturers, brands, specifications, models, and pressure ratings. For example, the "Dengquan" brand produced by Dengquan Plastic Industry, with a nominal pressure of SDR26 and an outer diameter of 110mm, is priced at 73.43 RMB/m (for reference only). In contrast, the SDR13.6 nominal pressure of 1.25Mpa and an outer diameter of 160mm is priced at 340.25 RMB/m (for reference only). When purchasing, customers should determine which specifications and models to buy based on their project requirements. Dengquan Plastic Industry's PE pipes are classified as green building materials, used not only for hot and cold water systems but also for pure drinking water systems. Under the prescribed long-term continuous working pressure, the water temperature transported through the pipes can reach 95°C. This eliminates concerns about pipe scaling and yellow stains or rust in water basins and bathtubs. The thermal conductivity is only one-fifth that of metal pipes, providing insulation and energy-saving effects for hot water pipelines. The product is lightweight and has high strength: its specific gravity is only one-eighth that of metal pipes, offering good toughness and impact resistance. The inner and outer walls of the product are smooth, with low flow resistance, soft colors, and beautiful shapes. The pipes are connected using hot melt methods, requiring no threading, enabling quick connections in seconds. The connections with metal pipes and water appliances use copper fittings, ensuring safety and reliability. The pipeline system has a lifespan of over 50 years under specified usage conditions. PE pipes are mainly applied in urban water supply networks, irrigation diversion projects, and agricultural sprinkler irrigation projects. The pipe connections use hot melt and electrofusion methods, achieving integration between the joints and pipes, effectively resisting axial and radial stress generated by internal pressure. Additionally, no heavy metal salt stabilizers are added during production, making the material non-toxic, non-scaling, and bacteria-free, thus avoiding secondary pollution of drinking water. PE pipes are available in medium-density polyethylene and high-density polyethylene. They are divided into SDR11 and SDR17.6 series based on wall thickness. The former is suitable for transporting gaseous artificial coal gas, natural gas, and liquefied petroleum gas, while the latter is mainly used for transporting natural gas. Compared to steel pipes, the construction process is simple, with certain flexibility, and most importantly, no anti-corrosion treatment is required, saving a significant amount of work. However, the mechanical properties are not as good as steel pipes, and special attention must be paid to the safety clearance for thermal heating, and they must not be exposed to the air and sunlight. They are also sensitive to chemicals, and measures must be taken to prevent sewage pipe leaks from causing harm. Factors Affecting PE Pipe Prices 1. From the perspective of PE pipes, the raw material is a decisive factor in pipe pricing. Some PE pipe manufacturers use recycled materials to reduce costs, which may not meet pressure standards and may not meet hygiene standards; moreover, pipes made from recycled materials often have rough inner walls and contain impurities. While this lowers material costs, the quality is significantly affected, so when purchasing PE pipes, it is crucial to understand market conditions and avoid purchasing overly cheap pipes. 2. Regarding the types and specifications of PE pipes, they have various applications, such as water supply pipes, conduit pipes, and corrugated pipes. These pipes differ in structure, technology, and performance, leading to cost variations. It is important for people to determine the price level based on the specific type of pipe, as variations in pipe diameter, wall thickness, and length will also affect the cost of PE pipes. How much does PVC pipe cost per meter? This is a common question among PVC pipe buyers. The price per meter of PVC pipe is closely related to product categories, specifications, models, manufacturers, brands, and quality. Therefore, this question is relatively vague. Understanding these factors allows for specific pricing based on the actual situation. Prices for different types of PVC pipes can vary greatly. Below, I will provide examples of PVC water pipe prices per meter. Generally speaking, the approximate prices for PVC water pipes by manufacturers are: 50*2 of 4=5.5 RMB/m, 75*2.3 of 6=8 RMB/m, 110*3.2 of 14-17 RMB/m, 160*4 of 30-32 RMB/m, 200*5 of 50-54 RMB/m (the diameter following indicates wall thickness in mm). The above prices are for market reference only. PVC pipes are not only used in our daily lives but are also commonly used in industry. Some large buildings have underground pipelines made of PVC, differing only in specifications from those used in households. Therefore, the application scope of PVC pipes is very extensive. If you are very interested in this topic, I encourage you to continue reading as I will provide a detailed introduction to the prices and specifications of PVC plastic pipes. The price of PE100 water supply pipes is determined by various factors, including manufacturers, brands, specifications, models, and pressure ratings. For example, the "Dengquan" brand produced by Dengquan Plastic Industry, with a nominal pressure of SDR26 and an outer diameter of 110mm, is priced at 73.43 RMB/m (for reference only). In contrast, the SDR13.6 nominal pressure of 1.25Mpa and an outer diameter of 160mm is priced at 340.25 RMB/m (for reference only). When purchasing, customers should determine which specifications and models to buy based on their project requirements. Dengquan Plastic Industry's PE pipes are classified as green building materials, used not only for hot and cold water systems but also for pure drinking water systems. Under the prescribed long-term continuous working pressure, the water temperature transported through the pipes can reach 95°C. This eliminates concerns about pipe scaling and yellow stains or rust in water basins and bathtubs. The thermal conductivity is only one-fifth that of metal pipes, providing insulation and energy-saving effects for hot water pipelines. The product is lightweight and has high strength: its specific gravity is only one-eighth that of metal pipes, offering good toughness and impact resistance. The inner and outer walls of the product are smooth, with low flow resistance, soft colors, and beautiful shapes. The pipes are connected using hot melt methods, requiring no threading, enabling quick connections in seconds. The connections with metal pipes and water appliances use copper fittings, ensuring safety and reliability. The pipeline system has a lifespan of over 50 years under specified usage conditions. PE pipes are mainly applied in urban water supply networks, irrigation diversion projects, and agricultural sprinkler irrigation projects. The pipe connections use hot melt and electrofusion methods, achieving integration between the joints and pipes, effectively resisting axial and radial stress generated by internal pressure. Additionally, no heavy metal salt stabilizers are added during production, making the material non-toxic, non-scaling, and bacteria-free, thus avoiding secondary pollution of drinking water. PE pipes are available in medium-density polyethylene and high-density polyethylene. They are divided into SDR11 and SDR17.6 series based on wall thickness. The former is suitable for transporting gaseous artificial coal gas, natural gas, and liquefied petroleum gas, while the latter is mainly used for transporting natural gas. Compared to steel pipes, the construction process is simple, with certain flexibility, and most importantly, no anti-corrosion treatment is required, saving a significant amount of work. However, the mechanical properties are not as good as steel pipes, and special attention must be paid to the safety clearance for thermal heating, and they must not be exposed to the air and sunlight. They are also sensitive to chemicals, and measures must be taken to prevent sewage pipe leaks from causing harm. Factors Affecting PE Pipe Prices 1. From the perspective of PE pipes, the raw material is a decisive factor in pipe pricing. Some PE pipe manufacturers use recycled materials to reduce costs, which may not meet pressure standards and may not meet hygiene standards; moreover, pipes made from recycled materials often have rough inner walls and contain impurities. While this lowers material costs, the quality is significantly affected, so when purchasing PE pipes, it is crucial to understand market conditions and avoid purchasing overly cheap pipes. 2. Regarding the types and specifications of PE pipes, they have various applications, such as water supply pipes, conduit pipes, and corrugated pipes. These pipes differ in structure, technology, and performance, leading to cost variations. It is important for people to determine the price level based on the specific type of pipe, as variations in pipe diameter, wall thickness, and length will also affect the cost of PE pipes. How much does PVC pipe cost per meter? This is a common question among PVC pipe buyers. The price per meter of PVC pipe is closely related to product categories, specifications, models, manufacturers, brands, and quality. Therefore, this question is relatively vague. Understanding these factors allows for specific pricing based on the actual situation. Prices for different types of PVC pipes can vary greatly. Below, I will provide examples of PVC water pipe prices per meter. Generally speaking, the approximate prices for PVC water pipes by manufacturers are: 50*2 of 4=5.5 RMB/m, 75*2.3 of 6=8 RMB/m, 110*3.2 of 14-17 RMB/m, 160*4 of 30-32 RMB/m, 200*5 of 50-54 RMB/m (the diameter following indicates wall thickness in mm). The above prices are for market reference only. PVC pipes are not only used in our daily lives but are also commonly used in industry. Some large buildings have underground pipelines made of PVC, differing only in specifications from those used in households. Therefore, the application scope of PVC pipes is very extensive. If you are very interested in this topic, I encourage you to continue reading as I will provide a detailed introduction to the prices and specifications of PVC plastic pipes. The price of PE100 water supply pipes is determined by various factors, including manufacturers, brands, specifications, models, and pressure ratings. For example, the "Dengquan" brand produced by Dengquan Plastic Industry, with a nominal pressure of SDR26 and an outer diameter of 110mm, is priced at 73.43 RMB/m (for reference only). In contrast, the SDR13.6 nominal pressure of 1.25Mpa and an outer diameter of 160mm is priced at 340.25 RMB/m (for reference only). When purchasing, customers should determine which specifications and models to buy based on their project requirements. Dengquan Plastic Industry's PE pipes are classified as green building materials, used not only for hot and cold water systems but also for pure drinking water systems. Under the prescribed long-term continuous working pressure, the water temperature transported through the pipes can reach 95°C. This eliminates concerns about pipe scaling and yellow stains or rust in water basins and bathtubs. The thermal conductivity is only one-fifth that of metal pipes, providing insulation and energy-saving effects for hot water pipelines. The product is lightweight and has high strength: its specific gravity is only one-eighth that of metal pipes, offering good toughness and impact resistance. The inner and outer walls of the product are smooth, with low flow resistance, soft colors, and beautiful shapes. The pipes are connected using hot melt methods, requiring no threading, enabling quick connections in seconds. The connections with metal pipes and water appliances use copper fittings, ensuring safety and reliability. The pipeline system has a lifespan of over 50 years under specified usage conditions. PE pipes are mainly applied in urban water supply networks, irrigation diversion projects, and agricultural sprinkler irrigation projects. The pipe connections use hot melt and electrofusion methods, achieving integration between the joints and pipes, effectively resisting axial and radial stress generated by internal pressure. Additionally, no heavy metal salt stabilizers are added during production, making the material non-toxic, non-scaling, and bacteria-free, thus avoiding secondary pollution of drinking water. PE pipes are available in medium-density polyethylene and high-density polyethylene. They are divided into SDR11 and SDR17.6 series based on wall thickness. The former is suitable for transporting gaseous artificial coal gas, natural gas, and liquefied petroleum gas, while the latter is mainly used for transporting natural gas. Compared to steel pipes, the construction process is simple, with certain flexibility, and most importantly, no anti-corrosion treatment is required, saving a significant amount of work. However, the mechanical properties are not as good as steel pipes, and special attention must be paid to the safety clearance for thermal heating, and they must not be exposed to the air and sunlight. They are also sensitive to chemicals, and measures must be taken to prevent sewage pipe leaks from causing harm. Factors Affecting PE Pipe Prices 1. From the perspective of PE pipes, the raw material is a decisive factor in pipe pricing. Some PE pipe manufacturers use recycled materials to reduce costs, which may not meet pressure standards and may not meet hygiene standards; moreover, pipes made from recycled materials often have rough inner walls and contain impurities. While this lowers material costs, the quality is significantly affected, so when purchasing PE pipes, it is crucial to understand market conditions and avoid purchasing overly cheap pipes. 2. Regarding the types and specifications of PE pipes, they have various applications, such as water supply pipes, conduit pipes, and corrugated pipes. These pipes differ in structure, technology, and performance, leading to cost variations. It is important for people to determine the price level based on the specific type of pipe, as variations in pipe diameter, wall thickness, and length will also affect the cost of PE pipes. PE pipe specifications and prices introduction 1. PE pipes are black, with nominal pressure ranging from 0.6 to 1.6 (Mpa), and nominal outer diameters ranging from 20 to 800 (mm). The material is HDPE, with a continuous working temperature of 0 (°C), priced between 8.00-10.00 RMB. 2. PE water supply pipe fittings with a nominal outer diameter of 110 (mm) are made of HDPE, used for drinking water pipes, with a nominal pressure of 16 (Mpa) and wall thickness of 0.8 (mm), priced between 6.5-8.50 RMB. The above prices are for reference only, actual prices may vary during purchase. PE pipe specification classification Often receive calls inquiring about PE pipes, sometimes mentioning non-standard specifications. This indicates that many customers still do not fully understand the classification of PE pipe specifications. Let's briefly discuss the classification of PE pipe specifications. From the perspective of pressure levels, PE pipes are mainly divided into 0.6Mpa, 0.8Mpa, 1.0Mpa, 1.25Mpa, and 1.6Mpa. Mpa is a pressure unit, for example, 0.6Mpa means a pressure of 10 kilograms. From the perspective of PE pipe diameters, they can be roughly divided into: 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000, and 1200, all measured in mm. The diameter refers to the outer diameter, and the wall thickness varies with different pressure ratings. With this knowledge, you can purchase the required PE pipes according to your project needs. For some unconventional pipes, such as those used for PE conduit or drainage pipes, a smaller pressure may sometimes be acceptable, such as 0.4Mpa, which can help save costs. Dengquan Plastic Industry's strict brand quality management and advanced testing equipment ensure the quality of its pipes. Its leading products include PP-R cold and hot water supply pipes, PE water supply pipe series, PVC-U water supply pipe series, PVC-U drainage pipe series, PVC-U underground sewage pipe series, PVC-U normal power cable pipe series, PVC-U construction electrical sleeves series, among other series and over a thousand varieties. PE (high-density polyethylene) is an environmentally friendly and healthy drinking water pipeline, made from imported PE100 raw materials, manufactured according to GB/T13663 standards. The product has good weldability, resistance to environmental stress cracking, and meets international and national standards. PE pipes are mainly used for water supply and drainage pipelines, mining pipelines, and for transporting wastewater and flowable solids or mixtures in the chemical and pharmaceutical industries. The internal resistance is 25% lower than that of metal pipes, significantly improving transportation efficiency. The raw material sources for PE are abundant. From the molecular structure (C2H4), PE's molecular structure is simpler than that of other polymers. In its development, PE pipes continuously overcome their shortcomings. The heating and welding of PE pipes require a certain operational space and skilled operation techniques. Later, electric heat-welded couplings were invented, connecting two pipe sections or fittings through an electric heat-welded sleeve. This connection method is used for connecting PE pipes in trenches or in confined spaces. The material performance of PE pipes is also improving, transitioning from PE63 and PE80 to PE100, and will eventually develop into PE115. PE100 means that at 200°C, this grade of PE material can maintain a minimum strength (MRS) of 10Mpa after 50 years. PE80 corresponds to 8.0Mpa. With the increase in the grade of PE materials, for the same pipe, the wall thickness of PE115 pipes will be less than that of PE100 pipes, reducing the amount of PE material used and lowering costs, which is beneficial for the application of PE pipes in large diameter pipelines. The connections of PE pipes require heating and a certain cooling time, with each welding taking about 20 minutes. The larger the diameter of the pipe, the longer the heating and cooling time, so the installation time for PE pipes is relatively extended.