PVC Pipe
Detailed Description of UPVC Pipes for Underground Cable Protection Pipe:
The polyvinyl chloride (PVC-U) power pipe usually adopts the extrusion molding process. The PVC materials that have been fully mixed and plasticized are added into the extruder. Driven by the screw, the materials are heated to a certain temperature and plasticized in the barrel, and then extruded through the mold to form a pipe with specific shape and size. During the extrusion process, the pipe will also be cooled and shaped to ensure its dimensional accuracy and surface quality. In the production process, it is necessary to precisely control the process parameters such as the processing temperature, screw rotation speed, and traction speed to ensure the quality and performance of the pipe.
Material Characteristics and Advantages of Polyvinyl Chloride (PVC-U) Power Pipe
Good Electrical Insulation Performance: The PVC material has excellent electrical insulation performance, which can effectively prevent current leakage, avoid mutual interference between cables, and ensure the safe and stable transmission of electricity.
Strong Corrosion Resistance: It has good tolerance to chemical substances such as acids, alkalis, and salts, and is not easily corroded. It can be used in various harsh soil environments and chemically polluted environments, thus extending the service life of the pipe.
High Mechanical Strength: It has high compressive strength and impact resistance, and can withstand a certain degree of external pressure and impact. It is not easy to deform or break, protecting the internal cables from damage.
Good Aging Resistance: During long-term use, it can resist the influence of factors such as ultraviolet rays and oxidation, and is not prone to aging or embrittlement, maintaining good performance.
Lightweight: The PVC-U power pipe is relatively light in weight, making it convenient for handling, transportation, and installation. It reduces the construction difficulty and labor intensity, and improves the construction efficiency.
Convenient Construction: The connection method of the pipe is simple. Usually, socket connection or hot melt connection is adopted, which is firm in connection and has good sealing performance, effectively preventing water and impurities from entering the pipe.
Smooth Inner Wall: The inner wall of the pipe is smooth with a small friction coefficient. When the cable is threaded through the pipe, the resistance is small, facilitating the laying and replacement of the cable.
High Cost-effectiveness: Considering factors such as its material cost, service life, and construction cost, the PVC-U/PVC-C power pipe has a high cost-performance ratio and can save costs for power engineering construction.
Pipeline Detection Items:
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Determination of Melt Flow Rate |
Simple Supported Beam Impact Test |
Tensile Yield Stress Test |
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Hydrostatic Test |
Vicat Softening Test |
High Temperature Stress Relief Test |
| Specification dn*en (mm) | Mean Outside Diameter de (mm) | Nominal wall thickness en (mm) | Solvent Cement Joints (SCJ) | Rubber Ring Joints (RRJ) | ||||||
| Depth of Socket L (mm) | Mean inner diameter in the middle of socket di (mm) | Minimum socket length Amin (mm) | First stage minimum length of socket Bmin (mm) | Minimum ID of socket in second stage dimin (mm) | ||||||
| dn | Limit Deviation | Thickness | Limit Deviation | min (mm) | max (mm) | |||||
| 50*2.0 | 50 | -0.3 +0.6 | 2.0 | -0.2 +0.3 | 60 | 49.8 | 50.7 | - | - | - |
| 50*2.8 | 50 | -0.3 +0.6 | 2.8 | -0.3 +0.3 | 60 | 49.8 | 50.7 | - | - | - |
| 50*5.0 | 50 | -0.3 +0.6 | 5.0 | -0.5 +0.5 | 60 | 49.8 | 50.7 | - | - | - |
| 63*5.0 | 63 | -0.3 +0.6 | 5.0 | -0.5 +0.5 | 65 | 62.8 | 63.7 | - | - | - |
| 75*2.3 | 75 | -0.3 +0.6 | 2.3 | -0.2 +0.2 | 70 | 74.8 | 75.7 | - | - | - |
| 75*2.8 | 75 | -0.3 +0.6 | 2.8 | -0.3 +0.3 | 70 | 74.8 | 75.7 | - | - | - |
| 75*5.0 | 75 | -0.3 +0.6 | 5.0 | -0.5 +0.5 | 70 | 74.8 | 75.7 | - | - | - |
| 90*2.8 | 90 | -0.3 +0.6 | 2.8 | -0.3 +0.3 | 70 | 89.8 | 90.7 | - | - | - |
| 90*3.2 | 90 | -0.3 +0.6 | 3.2 | -0.3 +0.3 | 70 | 89.8 | 90.7 | - | - | - |
| 90*4.5 | 90 | -0.3 +0.6 | 4.5 | -0.4 +0.4 | 70 | 89.8 | 90.7 | - | - | - |
| 110*3.0 | 110 | -0.4 +0.8 | 3.0 | -0.3 +0.3 | - | - | - | 100 | 60 | 111.0 |
| 110*4.0 | 110 | -0.4 +0.8 | 4.0 | -0.4 +0.4 | - | - | - | 100 | 60 | 111.0 |
| 110*5.0 | 110 | -0.4 +0.8 | 5.0 | -0.5 +0.5 | - | - | - | 100 | 60 | 111.0 |
| 110*7.0 | 110 | -0.4 +0.8 | 7.0 | -0.7 +0.7 | - | - | - | 100 | 60 | 111.0 |
| 160*3.2 | 160 | -0.5 +1.0 | 3.2 | -0.3 +0.3 | - | - | - | 120 | 60 | 161.2 |
| 160*4.0 | 160 | -0.5 +1.0 | 4.0 | -0.4 +0.4 | - | - | - | 120 | 60 | 161.2 |
| 160*5.0 | 160 | -0.5 +1.0 | 5.0 | -0.5 +0.5 | - | - | - | 120 | 60 | 161.2 |
| 160*8.0 | 160 | -0.5 +1.0 | 8.0 | -0.8 +0.8 | - | - | - | 120 | 60 | 161.2 |
| 167*5.0 | 167 | -0.5 +1.0 | 5.0 | -0.5 +0.5 | - | - | - | 140 | 60 | 168.5 |
| 167*6.0 | 167 | -0.5 +1.0 | 6.0 | -0.6 +0.6 | - | - | - | 140 | 60 | 168.5 |
| 167*8.0 | 167 | -0.5 +1.0 | 8.0 | -0.8 +0.8 | - | - | - | 140 | 60 | 168.5 |
| 167*8.5 | 167 | -0.5 +1.0 | 8.5 | -0.8 +0.8 | - | - | - | 140 | 60 | 168.5 |
| 192*5.8 | 192 | -0.5 +1.0 | 5.8 | -0.6 +0.6 | - | - | - | 160 | 60 | 193.8 |
| 192*6.5 | 192 | -0.5 +1.0 | 6.5 | -0.6 +0.6 | - | - | - | 160 | 60 | 193.8 |
| 192*7.5 | 192 | -0.5 +1.0 | 7.5 | -0.7 +0.7 | - | - | - | 160 | 60 | 193.8 |
| 192*8.5 | 192 | -0.5 +1.0 | 8.5 | -0.8 +0.8 | - | - | - | 160 | 60 | 193.8 |
| 200*4.0 | 200 | -0.5 +1.0 | 4.0 | -0.4 +0.4 | - | - | - | 180 | 60 | 202.0 |
| 200*5.0 | 200 | -0.5 +1.0 | 5.0 | -0.5 +0.5 | - | - | - | 180 | 60 | 202.0 |
| 200*6.0 | 200 | -0.5 +1.0 | 6.0 | -0.6 +0.6 | - | - | - | 180 | 60 | 202.0 |
| 200*8.0 | 200 | -0.5 +1.0 | 8.0 | -0.8 +0.8 | - | - | - | 180 | 60 | 202.0 |
| 200*9.0 | 200 | -0.5 +1.0 | 9.0 | -0.9 +0.9 | - | - | - | 180 | 60 | 202.0 |
| 200*10.0 | 200 | -0.5 +1.0 | 10.0 | -0.9 +0.9 | - | - | - | 180 | 60 | 202.0 |
Polyvinyl Chloride (PVC-U) power pipes are mainly applied in the following scenarios:
Cable Buried Laying: In the urban power grid, PVC-U power pipes provide reliable protection for cables, preventing them from soil corrosion, mechanical damage, etc.
Residential Power Inlet: In residential communities, PVC-U power pipes are used for the power inlet pipelines of residential buildings, safely transmitting the electricity from the community's distribution substation to each residential building.
Internal Power Transmission in Industrial Plants: There are numerous production equipment and a large power demand in industrial plants. PVC-U power pipes are used inside the industrial plants to protect the power cables connecting the substations and various production workshops. Their properties such as high strength and corrosion resistance can adapt to the complex environment of industrial plants.
Municipal Street Lighting: PVC-U power pipes are widely used in the street lighting systems of municipal public areas such as urban roads, bridges, and squares. They connect the street lamp power sources to each street lamp and have significant advantages in the construction and maintenance of municipal street lighting projects.
