PVC solid wall pipe for underground communication pipe

PVC solid wall pipes for underground communication are made of unplasticized polyvinyl chloride (PVC-U) and are widely used in underground communication pipeline systems. They provide reliable protection for optical cables and electrical cables. Below is a detailed introduction to this product:

Material and Composition

PVC-U is a thermoplastic synthesized from vinyl chloride monomer through polymerization. It is characterized by high strength, corrosion resistance, and excellent electrical insulation properties. By adding appropriate stabilizers, lubricants, fillers, and other additives, the performance of PVC-U can be further enhanced to meet the requirements of underground communication pipelines. The PVC solid wall pipe body is uniformly composed of PVC-U material, ensuring consistent performance throughout the pipe.

Physical and Chemical Properties

Corrosion Resistance: PVC solid wall pipes exhibit strong resistance to acids, alkalis, salts, and other chemicals. They do not rust or corrode even when buried underground for extended periods, eliminating the risk of pipe damage due to corrosion and ensuring the long-term stability of communication lines. Compared to traditional metal pipes and concrete pipes, their corrosion resistance is far superior.

High Strength and Ring Stiffness: The pipes possess high mechanical strength and excellent ring stiffness, enabling them to withstand significant external pressure and ground subsidence without deformation. This protects the cables inside from damage and ensures the reliability of communication lines. For instance, Contech's SDR23.5 solid wall PVC pipes have a minimum pipe stiffness of 153 psi.

Excellent Electrical Insulation Properties: PVC-U is an excellent electrical insulator with high volume resistivity, effectively preventing electrical leakage and ensuring the safe operation of communication cables. This makes it ideal for use as conduit for electrical cables.

Good Wear Resistance: The pipes exhibit strong wear resistance, allowing them to endure long-term friction from soil and other surrounding substances. This ensures minimal performance degradation over time and extends the service life of the pipes.

Smooth Inner Walls: The inner walls of PVC solid wall pipes are smooth, with a low friction coefficient. This facilitates the pulling of cables during installation and maintenance, reduces construction difficulty and labor costs, and avoids damage to cables caused by rough pipe surfaces.

Ultraviolet (UV) Resistance: Some PVC solid wall pipes are treated with UV stabilizers, enabling them to withstand prolonged exposure to sunlight without degradation. This ensures stable performance even in outdoor environments.

Product Specifications

PVC solid wall pipes for underground communication come in various sizes to meet the needs of different projects. For example, Pestan's PVC pipes for cable protection offer diameters of 110 mm, 125 mm, 160 mm, and 200 mm, with standard lengths of 6 meters and 12 meters. Common wall thicknesses include 3.2 mm for 110 mm pipes and 3.7 mm for 125 mm pipes. Contech manufactures solid wall PVC pipes in compliance with ASTM D3034 standards, with nominal diameters of 4" and 6" and minimum wall thicknesses of 0.162" and 0.241" for SDR26 pipes, respectively.

Application Scenarios

Telecommunication and Power Engineering: PVC solid wall pipes are widely used in underground communication pipelines for telecommunication and power projects, protecting optical cables and electrical cables. They ensure the safe transmission of communication and power signals, supporting the stable operation of communication and power systems. For example, they can be used in fiber-to-the-home (FTTH) and neighborhood broadband projects, as well as in power cable conduits.

Municipal Engineering: In urban infrastructure construction, PVC solid wall pipes are used for underground drainage and sewage pipelines. They contribute to the effective organization and protection of underground cables, enhancing the overall level of urban infrastructure.

Road and Bridge Engineering: PVC solid wall pipes can serve as embedded sleeves for roads and bridges, protecting communication and power cables during construction and use. This ensures the safety of cable lines and the normal operation of transportation facilities.

Other Fields: They are also applicable in agriculture for irrigation pipelines and in aquaculture for fluid transport pipelines. In chemical and mining industries, they can transport fluids, offering reliable solutions for fluid transportation.

Advantages

Lightweight: PVC solid wall pipes are lightweight, making them easy to transport and install. This reduces labor intensity and construction timelines, lowers construction costs, and improves construction efficiency.

Convenient Installation: The pipes feature a socket-type connection method, allowing for quick and easy assembly. No heavy machinery is required, and construction can be completed efficiently. Additionally, the pipes can be easily cut and adjusted on-site to accommodate specific project requirements.

Good Sealing Performance: The pipes use elastic sealing rings for socket connections, ensuring excellent sealing performance. They effectively prevent groundwater infiltration and leaked liquids, safeguarding the communication cables inside and preventing environmental pollution.

Long Service Life: Under normal usage conditions, the service life of PVC solid wall pipes exceeds 50 years. Their long lifespan reduces replacement frequency and maintenance costs, providing a cost-effective solution for underground communication projects.

Standards and Certifications

PVC solid wall pipes for underground communication are manufactured and tested in accordance with various national and international standards, such as ASTM D3034, ISO 6993, SABS966, GB/T32018, and AS/NZS 4765. These standards regulate the dimensional tolerances, raw material properties, performance requirements, and testing methods of the pipes, ensuring stable quality and reliable performance. For example, ASTM F0512-19 specifies requirements for impact resistance, strength, joint tightness, pipe stiffness, and extrusion quality of smooth-wall PVC conduits and fittings.

Environmental Performance

PVC solid wall pipes are made from environmentally friendly raw materials. During production, they consume relatively low energy and generate minimal carbon emissions. At the end of their service life, the pipes can be recycled and reused, aligning with sustainable development goals and reducing environmental impact.