DN200-6000 Silicone Skin Non Metal Expansion Joint / Non Metallic Fabric

Metal Expansion Joint

Elbow Expansion Joint

Tension bends, where pipes are shaped into a U-shape or other configurations, function as a type of expansion joint that harnesses the elastic deformation properties of the shape to compensate for dimensional changes. Their benefits lie in excellent strength, long service life, and the ability to be produced on-site. However, they can be space-consuming, require higher steel consumption, and possess higher friction resistance. Despite these drawbacks, tension bends are widely utilized in various steam piping and long pipeline systems.

Bellows Expansion Joint

A bellows expansion joint, crafted from metal bellows, offers both axial expansion and contraction along the pipeline, as well as limited bending capabilities. To safeguard against exceeding the permissible compensation limit, protective rods or rings are fitted at both ends of the bellows, while guide supports are installed on the connected pipelines' extremities. Furthermore, angular and lateral expansion joints are available to compensate for rotational and lateral deformations in pipelines.

The benefits of these expansion joints include space efficiency, material conservation, ease of standardization, and mass production capabilities. However, a relatively shorter lifespan is a disadvantage. Typically, bellows expansion joints are employed in short pipelines with low temperatures and pressures. Nonetheless, with advancements in bellows production technology, the scope of applications for this type of expansion joint is broadening. Currently, bellows expansion joints can be utilized in pipe systems with a maximum pressure of 6.0 MPa.

Slip-Type Expansion Joint

The slip-type expansion joint  is a versatile device that utilizes inner and outer sleeves capable of relative axial movement to compensate for thermal expansion and axial rotation in pipelines. The space between the sleeves is sealed with stuffing box, ensuring that both ends of the pipes move on the same axis during operation.

The key components of this expansion joint include sleeves (core tubes), shells, and sealing materials. It is designed to handle hot water, steam, and grease media, offering a small volume with a large compensation amount. The inner sleeve slides against the outer sleeve to compensate for thermal expansion, while maintaining a high-performance self-sealing dynamic seal.

The seal between the shell and inner sleeve employs a new synthetic material that can withstand high temperatures, resist corrosion and aging. This material has a temperature range of -40 to 150 degrees Celsius, and can reach up to 350 degrees Celsius under special conditions. This ensures not only axial sliding but also prevents leakage of the medium inside the pipe.

Overall, the slip-type expansion joint provides a reliable and efficient solution for compensating thermal expansion and axial rotation in pipelines, while maintaining a secure seal and extending the lifespan of the system.

Non-metallic Expansion Joint

Rubber Expansion Joint

Composed of rubber and rubber-fiber composite materials, steel flanges, sleeves, and insulation materials, it is mainly used for flexible connections between various fans and ducts. Its functions include shock absorption, noise reduction, sealing, medium resistance, easy displacement and installation. It is an ideal accessory for shock absorption, noise reduction, smoke and dust removal in the field of environmental protection.

Fabric Expansion Joint

The fabric expansion joint is mainly made of fiber fabric, rubber, and other high temperature resistant materials. It can compensate for the vibration and deformation of fans and ducts.Fabric expansion joints can compensate for axial, lateral, and angular products, with features such as no thrust, simplified support design, corrosion resistance, high temperature resistance, noise reduction, vibration reduction,and others.It is particularly suitable for hot blast pipes and smoke and dust pipeline of power plant.The non-metallic compensator's fiber fabric and insulation cotton itself have the functions of sound absorption and vibration isolation, therefore they can effectively reducing the noise and vibration of boiler, fan, and other systems. Simple structure, light weight, and easy maintenance.

Compensating segment length(h/m)

Compensation volume(nm)

Axial displacement (x/m)

Lateral displacement (y/m)

Working Temperature (t°C)

Working pressure P(Kpa)

±10~±300,if the user requires, the pressure beyond the range, can be designed separately.

Flow rate