🧿 PE Steel Mesh Plastic Composite Pipe's Temperature Resistance

PE steel mesh plastic composite pipe, by combining a high-strength steel mesh skeleton with polyethylene material, truly enhances the overall performance of the pipe, and its temperature resistance is also higher than that of ordinary plastic pipe.

Long-term Operating Temperature: Generally speaking, this composite pipe can operate stably over a temperature range of -20°C to 80°C. Some sources mention an applicable temperature range of -40°C to 60°C, or even indicate short-term operating temperatures up to 100°C.
Why can it withstand such high temperatures: This is primarily due to its internal high-strength steel mesh skeleton. It absorbs most of the pipe's primary stresses, effectively restraining plastic creep. This results in a smaller decrease in pipe strength with increasing temperature than pure plastic pipe (approximately less than 5% decrease in strength for every 10°C increase in temperature). Therefore, the reinforcement of the steel mesh skeleton gives PE steel mesh composite pipe better temperature and pressure resistance than ordinary PE pipe (maximum pressure resistance can reach 3.5 MPa or even higher).

It should be noted that prolonged exposure to temperatures near the upper temperature limit may still affect the lifespan of polyethylene materials. Therefore, it is recommended to refer to the specific product specifications and application environment when selecting and applying the pipe.

When a PE steel wire mesh composite pipe leaks in a high-temperature environment, the appropriate repair method should be selected based on the extent of the damage and the specific circumstances. Before any repair, ensure that the internal pressure of the pipe has been released, the medium has been drained, and the pipe has cooled to a safe temperature to avoid burns and other accidents.

🧿 Repair Methods for High-Temperature Pipe Leaks

The following table summarizes common leak scenarios and their repair methods:

Leak Situation Recommended Repair Method Summary of Key Steps Applicability

Minor Damage (e.g., small holes, minor cracks) Repair Method with Electric Fusion Sleeve/Saddle Fittings: Cut or clean the damaged area, cover the leak with an electric fusion sleeve or saddle fitting, and heat it with an electric fusion welder to fuse it to the pipe. Suitable for localized damage

Leaking joints (electrofusion or heat-melt connections): Re-electrofusion/heat-melt connections: Cut off the existing joints and re-connect the pipes and fittings by electrofusion or heat-melting according to construction requirements. Joint problems

Damage at flexible joints with spigot-and-socket rubber rings: Connect with double-socket ferrules or flexible sleeves (repair joints): Remove the damaged pipe section, replace with a new pipe, and then reconnect using double-socket ferrules or flexible sleeves (repair joints). Damage at flexible joints

Extensive damage (e.g., cracked pipe section, multiple leaks): Replace the entire damaged pipe section and replace with a new pipe. Joints can be connected using electrofusion, heat-melt, or flanges. Note that the final weld should be connected with an electric fusion sleeve or flange to ensure a secure seal. Severe Damage

Damage caused by external factors (such as foundation settlement, temperature fluctuations, and changes in external loads). Repair the pipeline and eliminate the external factors. First, repair the pipeline according to the above methods. However, appropriate measures must be taken simultaneously (such as strengthening the foundation, installing compensators, and reducing external loads) to eliminate or mitigate the external factors that caused the damage. Otherwise, the problem may recur. Comprehensive Problems

Very Minor Damage (When Electric Fusion Repair is Impractical) Use a Multi-Layer Sealing Method Using an Epoxy Resin Mixture and Glass Cloth. Drain the pipeline, polish the leak, repair the weld with a PE welding rod, clean the weld and surrounding area with acetone, apply an epoxy resin mixture, and apply multiple layers of glass cloth (usually at least five layers). Allow to cure. This is a temporary or emergency repair method, suitable for emergency situations or when other methods are unavailable. Temporary or Emergency Repair

🧿 Benefits of Using High-Temperature Leak Repair Clamps

When repairing high-temperature pipeline leaks, using high-temperature leak repair clamps (also known as loose sleeves, emergency joints, or patchers) is a very efficient and reliable method, especially for situations where rapid restoration of service is necessary. Its main benefits include:

1. Excellent high-temperature resistance: High-quality high-temperature leak repair clamps are typically made of metal (such as stainless steel) or special high-temperature-resistant engineering plastics and equipped with high-temperature sealing rings (such as fluororubber and silicone rubber). They can withstand high temperatures and are suitable for the operating temperature range of PE steel wire mesh composite pipes, or even higher, ensuring sealing reliability and service life in hot environments.

2. Quick installation and reduced downtime: Leak repair clamps typically utilize a half-type (split) or sleeve-type design. Installation eliminates the need for extended water shut-offs and cooling (if safety permits), specialized welding equipment, and skilled welders. Simply clean the pipe surface, align the leak, and tighten the bolts to seal, significantly reducing repair time and downtime losses.

3. High adaptability: High-temperature leak repair clamps are available in a variety of sizes and styles to accommodate repairs of varying pipe diameters, leak locations (straight pipes, elbows, tees, etc.), and leak types (holes, cracks, failed joints, etc.). 4. Reliable Sealing and High Pressure Capacity: A well-designed leak repair clamp, through bolt tightening and the compression of high-performance sealing elements, achieves uniform sealing pressure, providing excellent sealing effectiveness and withstanding high internal pipe pressures.
5. Reusability: Some high-quality leak repair clamps can be reused for other repairs after removal, provided the sealing element is intact or a new seal ring is replaced, offering excellent economical efficiency.

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

PE wire mesh plastic composite pipes can withstand long-term temperatures up to 80°C and even higher short-term temperatures, primarily due to the reinforcement provided by the internal wire mesh skeleton.

If a leak occurs, repair options include electric fusion, pipe section replacement, or the use of leak repair clamps/sleeves, depending on the extent and location of the damage. For damage caused by external factors (such as foundation settlement), it's crucial to eliminate the external cause while repairing the pipe.

Using high-temperature leak repair clamps offers significant advantages when addressing leaks: they are heat-resistant, quick to install, adaptable, provide a reliable seal, and are reusable, effectively reducing downtime and economic losses.

We hope this information is helpful! If you encounter more specific circumstances when selecting or repairing pipes, such as the specific medium being transported, pressure, or exact leak characteristics, you can refer to the above methods and make adjustments accordingly.