🧿PE Composite Pipe Technical Specifications and Emergency Repair Advantages

PE Composite Pipe Maximum Pressure Rating

The maximum pressure rating of PE composite pipe is not a fixed value; it is affected by a variety of factors, including material type, structural design, standards and specifications, and operating temperature.

Common PE pressure pipes: The PE water pipes we commonly encounter typically have nominal pressure ratings of 0.6 MPa, 0.8 MPa, 1.0 MPa, 1.25 MPa, and 1.6 MPa.

High-performance composite materials: Specialized PE composite pipes, such as polyethylene/aluminum/polyethylene (PE-AL-PE) composite pressure piping systems, offer even higher pressure capabilities. According to CSA B137.9-2020, the rated pressure of such pipes at 23°C can reach 1380 kPa (approximately 1.38 MPa).

Theoretical Higher Pressure: The pressure-bearing capacity of PE pipes can theoretically be increased by increasing the pipe thickness indefinitely. However, this significantly increases cost and manufacturing complexity, making it impractical in practice. The pressure-bearing capacity of a pipeline is primarily related to the Standard Dimension Ratio (SDR), the ratio of outer diameter to wall thickness. The smaller the SDR, the thicker the pipe wall, and generally the higher the pressure-bearing capacity.

Key limiting factor: Temperature significantly affects the maximum allowable working pressure of PE pipe. When the ambient temperature exceeds 20°C, the maximum working pressure that PE pipe can withstand needs to be reduced.

Differences between PE steel mesh reinforced composite pipe and steel reinforced plastic composite pipe

🧿 Advantages of Using High-Pressure Repair Parts

When faults occur in high-pressure pipeline systems (particularly in power transmission and distribution, oil and gas, etc.), the use of specialized high-pressure repair parts or emergency repair equipment (such as repair towers and quick connectors) offers significant advantages, primarily in the following aspects:

1. Rapid restoration of power/transmission: The core advantage of equipment such as repair towers is their ability to quickly bypass the faulty line section and establish a temporary line to quickly restore power or transmission. This minimizes the economic losses and social impact of power or transmission outages. 2. Lightweight and Portable: Modern emergency repair components often utilize new materials and modular designs. For example, a carbon fiber emergency repair tower weighs only 30% of a traditional aluminum alloy tower, making it easier to transport. Modular components facilitate transportation and rapid on-site assembly.
3. High Strength and Reliability: Although these emergency repair components are temporary designs, they still possess high mechanical strength and reliability. For example, the carbon fiber emergency repair tower boasts a tensile strength of up to 800 MPa, enabling it to withstand harsh environments.
4. Adaptability and Flexibility: Well-designed emergency repair components can adapt to various complex terrains and emergency conditions. For example, an adjustable fixing device at the tower base allows for all-terrain assembly.
5. Significantly Improved Operational Efficiency: Combining these advantages, the use of advanced emergency repair technologies and equipment can significantly improve emergency operation efficiency. For example, the carbon fiber emergency repair tower developed by State Grid Jilin Power Supply Company is expected to increase operational efficiency by 50%.

Baoshuo's leak repair clamps are available in various sizes, including 304.316L stainless steel, corrosion-resistant bidirectional stainless steel, oil-resistant, and high-temperature resistant fluororubber and silicone rubber, depending on the pipeline's internal media requirements.

The housing is typically made of metals such as ductile iron and carbon steel, which are corrosion-resistant and high-strength. It can last the same life as the original pipe, eliminating the need for frequent repairs. Baoshuo brand carbon steel half joints are available in a variety of rubber materials, including NBR, EPDM, FKM, and silicone rubber. The half joint body is available in Q235 carbon steel and 304 and 316L stainless steel.

The following are Baoshuo brand oil-resistant pipe repair clamps, high-temperature-resistant pipe repair clamps, acid- and alkali-resistant pipe repair clamps, stainless steel pipe repair clamps, high-pressure-resistant pipe repair clamps, and large-diameter pipe repair clamps.

🧿 Summary and Recommendations

Practical Advice

When selecting and using PE composite pipe and considering emergency repair plans, please note the following:

Follow Standards and Specifications: When selecting PE pipe, be sure to adhere to mandatory national and industry standards (such as GB 50028) and technical regulations (such as CJJ 63). In particular, PE pipe is generally intended for underground use only and is strictly prohibited for use as above-ground or overhead pipes within buildings. Pressure Rating Selection: When determining the required pressure rating, consider not only the operating pressure but also factors such as temperature derating, pressure fluctuations (such as water hammer), and long-term service life, allowing for an appropriate safety margin.
Connection Reliability: Regardless of the composite pipe selected, joint reliability is crucial. Ensure compliance with specifications and use qualified fittings and welding machines that are compatible with the pipe material.
Emergency Repair Plan: For critical high-pressure pipelines, develop detailed emergency repair plans, stockpile critical repair supplies, and conduct regular drills to ensure a rapid response in the event of a failure.

We hope this information helps you better understand the characteristics of PE composite pipe and high-pressure repair parts. If you have further questions, please feel free to ask.