1. Industrial Heating and Power Generation Systems

Steam Pipeline Networks

Used in power plant main steam pipelines (200–540°C), reheater pipelines, and industrial boiler steam outlets to compensate for thermal expansion (axial displacement ≤300mm, lateral displacement ≤150mm).

Example: 600MW thermal power units require rectangular compensators with dimensions up to 4000×2000mm to handle large-diameter steam duct expansion.

Hot Air and Flue Gas Systems

Applied in boiler combustion air ducts (300–900°C), waste incineration flue gas pipelines, and steel mill reheating furnace flues, resisting high-temperature oxidation and thermal shock.

2. Petrochemical and Chemical Industry

High-Temperature Process Pipelines

Installed in catalytic cracking units (500–750°C), reforming furnaces, and ethylene cracking furnaces to compensate for thermal deformation of rectangular process ducts.

Corrosion-resistant types (e.g., Hastelloy C-276 linings) are used in sulfuric acid, nitric acid, or chloride media systems.

Exhaust Gas Treatment Facilities

Used in desulfurization and denitrification (FGD) systems of chemical plants, with fluororubber seals and glass fiber linings to resist 120–200°C wet flue gas corrosion.

3. Environmental Protection and Waste Treatment

Waste Incineration Plants

Installed in flue gas ducts (800–1100°C) between incinerators and air preheaters, with multi-layer stainless steel (310S) bellows and ceramic fiber linings to withstand high-temperature particle erosion.

Dust Collection and Ventilation Systems

Applied in baghouse dust collector inlet/outlet ducts (150–300°C) and cement kiln exhaust pipes, with wear-resistant linings (e.g., alumina ceramics) for abrasive dust environments.

4. Building and HVAC Engineering

Large-Scale Ventilation Systems

Used in rectangular air ducts of airports, stadiums, and underground garages (temperature ≤80°C), with lightweight EPDM rubber bellows for noise reduction and vibration absorption.

District Heating Networks

Installed in pre-insulated rectangular steam pipes (150–250°C) of urban heating projects, often combined with guide supports to ensure axial compensation.

5. Metallurgical and Mining Industries

Iron and Steel Manufacturing

Applied in hot blast stove gas pipelines (300–600°C), continuous casting machine cooling water ducts, and sintering machine flue systems, with heat-resistant alloy (Inconel 600) bellows for long-term high-temperature operation.

Mineral Processing Facilities

Used in rectangular ducts of ore drying kilns (200–450°C) and pulverized coal transportation systems, requiring anti-static designs and explosion-proof structures.

6. Special Applications in Aerospace and Nuclear Industry

Aerospace Ground Support

Used in rectangular exhaust ducts of rocket engine test stands (1500–2000°C), with tungsten-alloy reinforced bellows and water-cooling jackets for extreme temperature resistance.

Nuclear Power Plants

Installed in safety-related ventilation ducts (Class 1E) of nuclear power stations, with seismic-resistant designs and radiation-resistant 316L stainless steel materials, meeting ASME Section III standards.

Key Application Parameters and Standards

Application Field Temperature Range Pressure Range Main Standards

Power plant steam systems ≤540°C ≤4.0MPa ASME B31.1, GB/T 12777

Petrochemical high-temperature ≤800°C ≤2.5MPa API 6A, GB 50316

Environmental protection ≤1200°C ≤0.1MPa EN 13480, CJ/T 3016

Building HVAC ≤120°C -30kPa~+10kPa SMACNA, GB 50738