China MPP Power Cable Protection Pipe - High Voltage Cable Pipe Suppliers & Factory
Product Features
Effectively protects cables and prevents electrical short circuits, ensuring system safety.
Maintains stable performance in high-temperature environments and resists chemical corrosion.
Offers high compressive and impact resistance to withstand external mechanical loads.
Lightweight design allows quick installation and connection via hot fusion welding methods.
The material is pollution-free, fully recyclable, and offers a long operational service life.
Superb Performance
Overall Merit
MPP cable protection pipe integrates environmental protection, health, sealing, anti-corrosion, shockproof, high quality, low price, simple construction and other advantages. It has good economic and social benefits in the field of electric power, and has a wide application prospect.
Main Welding Methods and Operation Points
The following are the main welding methods and operation points of MPP power threading pipe:
Hot Melt Welding (Most Commonly Used)
Clean the end face of the pipe and use alcohol to remove oil, moisture and impurities.
Check the welding machine power supply, hydraulic oil and heating plate status, and set the temperature to 200-225℃ (increase appropriately when the temperature is low).
After the pipe is fixed, the end face is milled to ensure that the misalignment is ≤ 10% of the pipe wall thickness.
After the heating plate reaches the required temperature, quickly put the pipe in and pressurize it to create a flange on the end face (the flange height must meet the required temperature).
After maintaining pressure and absorbing heat for 2 minutes, the plate is quickly removed and the pipe ends are butt-jointed without rotation within a limited time (usually 5-10 seconds).
After docking, apply steady pressure and allow natural cooling for ≥ 20 minutes. Forced cooling is prohibited.
Electrofusion Welding
Scan the barcode of the electric fusion sleeve to automatically obtain the welding machine parameters (voltage, time).
Remove impurities from the joint and ensure that the gap between the pipe and the sleeve is uniform.
Start the welding machine and monitor the voltage fluctuation throughout the process. The process ends when the melting status indicator light goes out.
Do not move the pipe during the cooling period.
Other Connection Methods
The rubber seal needs to be positioned accurately and tapped into place with a mallet to prevent damage.
Check the sealing regularly, suitable for low pressure scenarios.
The bolts need to be tightened symmetrically and evenly, and the matching metal parts should be hot-dip galvanized for corrosion protection.
Suitable for large pipes that need to be disassembled frequently.
General Precautions
Environmental Control: When the ambient temperature is below -5℃ or there is strong wind, thermal insulation protection is required.
Quality Inspection: After welding, check the flatness of the weld to see if there are bubbles or cracks; perform pressure test if necessary.
Safe Operation: Avoid pinching during hot melt butt welding, and personnel need professional training.
Parameter & Specifications
Summary of MPP power cable protection pipe specifications and models
Specifications and models are mainly distinguished according to the outer diameter, wall thickness and length. Detailed classification of common specifications is shown below:
1. Combination of Outer Diameter and Wall Thickness
2. Length Specification
Common single pipe length is 6 meters, 9 meters, 12 meters.
3. Classification and Application Scenarios
Excavation Type: Suitable for conventional cable laying projects.
Non-Excavation Type (Pipe jacking/pull pipe): Used for cable protection in special sections such as roads, railways and riverbeds without large-scale damage to the ground.
Suggestions for Selection:
Small diameter (such as DN90mm, DN110mm) is mainly used for general cable laying, wall thickness is relatively thin;
Large diameter (such as DN200mm and above) is suitable for ultra-high voltage cables or complex environments (such as crossing roads), and a larger wall thickness should be selected to enhance the pressure bearing capacity.
4. Connection Mode
The connection mode of MPP cable protection pipe is also part of its specifications. Common connection modes include socket connection, hot fusion connection, electric fusion connection, etc. Different connection modes are suitable for different application scenarios and engineering requirements, and choosing the appropriate connection mode can ensure the safety and reliability of cable pipeline.
When selecting MPP cable protection pipes, it is essential to consider the specific project requirements, construction conditions, and the specifications and characteristics of the cables, ensuring that all specifications are compatible. Additionally, to ensure the quality and safety of the cable pipes, it is crucial to choose reputable manufacturers and high-quality products. During the construction process, it is necessary to follow relevant construction standards and technical requirements to ensure the installation quality and effectiveness of the cable pipes.
In short, MPP cable protection pipe has a variety of specifications, and the selection of appropriate specifications and connection mode is very important for cable protection. In practical application, it is necessary to consider and choose comprehensively according to the specific situation to ensure the safety, reliability and economic practicality of cable pipeline.