Corrugated metal pipes are flexible pipes made of metal with a corrugated wall structure, providing excellent flexibility and extensibility. This design allows them to withstand significant pressure and deformation, making them widely used in applications requiring vibration absorption, displacement compensation, or noise isolation. Corrugated metal pipes are typically made of stainless steel, copper alloys, or other high-strength metals, offering good corrosion resistance and high-temperature resistance.
The working principle of corrugated metal pipes is based on the elastic deformation capability of their corrugated structure. When subjected to external forces, the corrugated sections can expand, contract, or bend, absorbing displacement caused by mechanical vibration, thermal expansion, or installation misalignment. This characteristic makes them crucial for protection in piping systems, preventing pipe rupture or connector damage due to stress concentration.
In terms of applications, corrugated metal pipes are commonly found in the following fields:
1) Petrochemical industry, used to connect pumps, compressors, and other equipment to absorb vibration;
2) Power industry, as cable protection conduits;
3) Aerospace industry, used in fuel and hydraulic systems;
4) Construction industry, as seismic-resistant connectors;
5) Automobile manufacturing, used in exhaust systems.
From a manufacturing perspective, metal corrugated pipes are mainly produced using methods such as hydroforming, mechanical forming, or welding. Hydroforming can produce a more refined corrugated structure, while welding is suitable for large-diameter pipes. Based on the corrugation shape, they can be classified as U-shaped, Ω-shaped, and S-shaped, each type possessing different elastic properties and pressure-bearing capacity.
Several factors need to be considered when selecting metal corrugated pipes: working pressure range (typically 0.1-10 MPa), temperature range (-200℃ to +600℃), media characteristics (corrosiveness, abrasiveness), and installation space limitations. During installation, care should be taken to avoid excessive stretching or twisting; it is recommended to retain a certain amount of free length to ensure compensating capabilities.