Canvas Expansion Joint

At Unick Control System, we take pride in manufacturing high-quality expansion bellows, both rubber and metallic, meticulously designed to meet our clients' exact specifications. Our expansion bellows are engineered to absorb thermal expansion, vibration, and mechanical stresses, ensuring enhanced performance and durability in a wide range of industrial applications, including power plants, chemical industries, and HVAC systems. Using advanced materials and cutting-edge technology, we deliver products that offer exceptional flexibility, pressure resistance, and longevity. Whether itâ??s rubber bellows for superior elasticity or metallic bellows for high-temperature and pressure environments, we work closely with our clients to provide customized solutions that meet their operational needs and ensure seamless functionality.

Expansion joint,Expansion joint Supplier
Size : DN50~DN1000
 Pressure : Max 4.0 Mpa
 Bellows : Carbon Steel / Stainless Steel
 Other parts : Carbon Steel / Stainless Steel

Expansion joint
Expansion joint can also be called pipe expansion joint, compensator, expansion. Expansion joint is divided into: corrugated expansion joint, sleeve expansion joint, square natural compensation expansion joint and other major types,
1. Compensation for expansion deformation caused by heating of absorption pipeline in axial, lateral and angular directions.
2. Absorb equipment vibration to reduce the influence of equipment vibration on pipeline.
3. The amount of deformation of pipelines by absorbing earthquake and subsidence.
Because of the heat expansion and cold contraction of the pipe, so for the pipe, it is necessary to produce the stress and push tension of the pipe wall; The stress on the wall of the pipe affects the strength of the pipe, and the push and pull force increases. The fixed bracket of the pipe should be made large to withstand the push and pull force generated by the pipe expansion. Therefore, the variable opening method compensated by the ductile iron pipe mechanical joint fittings is used to reduce the stress and thrust of the pipe wall.
The expansion joint is mainly used to compensate the expansion deformation caused by the temperature change of the pipeline, and also to compensate the length of the pipeline due to the installation and adjustment. It is mainly divided into three structural forms: wholesale elbow expansion joint, bellows expansion joint and casing expansion joint.

Product Features of Rubber Expansion Joint


To provide stress relief in ducting system by absorbing any difference in dimension caused by thermal change.
To protect equipment by reducing equipment vibration.
To provide simple connection of misaligned pipes.
Accommodate expansion and contraction movement in axial, lateral and angular direction.
Prevent the propagation of electricity
Dampen sound transmission

Materials

Rubber : Neoprene, Nitrile, EPDM, Natural, Butyl, Hypalon, Silicone, SBR, Flurocarbon rubber
Fabrics : Canvas, Rayan, Polyester, Nylon, Glass Fabric
Metal Flanges : Stainless Steel, MS, Aluminium

Type, Size and Pressure Rating
Type : Single arch type, multi arch type, sleeve, Joint type, Enlarge Flange type, wide arch type.
Size : 50 to 3000 mm
Pressure (base on dia) : Upto 25 kg/cm2
Permissible movement : Axial (compression) - upto 200 mm
Axial (elongation) - upto 75 mm
Transverse - upto 75 mm
Face to Face length : 50 to 700 mm

The auto punch bellow forming machine is divided into several ranges: DN100-1200mm, DN100-1600mm, DN1500-5000, customized.
Auto expansion joint machine adopts our patent technology of rotating salver and the cones retract system; FUGE bellow forming machines use Siemens PLC and German Balluff sensors and servo motors to be more precise; the punch bellow forming machine owns 3 working positions and can form 3 bellows at the same time.
The mechanical expansion joint forming machine is powerful enough for multiple layers of bellow and different materials, such as SS, Inconel.

We are pleased to introduce ourselves as one of leading manufacturer & exporter of Rectangular Expansion Joints & Bellows in India. We are among few manufacturer in India who manufacture full range of Expansion Joints--Metallic, Non Metallic, Circular, Rectangular, Square, Fabric, Canvas, EPDM, Multilayer, etc. The material are designed as per customer pressure & temperature rating & application. The end fittings are tailor made as per customer requirements and design.

We are pleased to introduce ourselves as one of leading manufacturer & exporter of EPDM Expansion Joint in India.

We manufacture full range of Expansion Joints--Metallic, Non Metallic, Circular, Rectangular, Square, EPDM, Fabric, Multilayer, Canvas etc suitable for any application.

The material are designed as per customer pressure & temperature rating. The end fittings are tailor made as per customer requirements and design.
These expansion joints are used to absorb vibration, axial, lateral & angular movement in the pipeline.

We are exporting Bellows to more than 20 countries and are receiving repeat orders from most of them.

Type: Single Type, Double Type, BSP/NPT Thread Type
Size Range: DN25-DN1600
Material of Rubber ball: CR, NBR, EPDM, HYPALON, VITON
Material of flange: Galvanized Steel, Stainless Steel
Working temperature: -20â?? to +115â??
Ball length for Single Sphere: 130mm, 150mm, 95mm-300mm
Ball length for Double Sphere: 175mm-345mm
Ball length for Union Type: 200mm for DN15-DN50, 240mm for DN65-DN80.
Thread End Connection: BSP or NPT thread
Flange End Connection: EN1092-1 PN10/PN16, ANSI150, BS4504, AS2129 Table D/E.
Working Pressure: PN6, PN10, PN16, PN25
Application: water, warm water, seawater, weak acids, alkalis, etc...
Easy installation and remove; absorbs vibration, noise and shock


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Types: Single Sphere, double-sphere; Flange Type, Union Type

Flange drilling: ANSI class 125/150, DIN PN 10/PN16, JIS 5K/10K
Working pressure: 1.6mPa (16 kgf/cm2)
Working degree: -15 to +115 degrees Celsius
Working medium: Vapour, compressed air, cold & hot water, seawater, oil, weak acid, alkali

Material list:
Body: Neoprene, EPDM, NBR
Lining: Chinlon Cord Fabrics
Frame: Hard Steel Wires
Flange: Carbon Steel.