Axial expansion joints are designed to compensate axial movements (extension and compression) in its longitudinal axial direction due to thermal expansions and absorb the mechanical vibrations and reduce sound on pipe line systems (pumps, compressors, fans).
The standard expansion values of axial expansion joints (metal bellow expansion joints) are 30 mm and 60 mm. Upon customer request special expansion values and sizes will designed and produced. If smoothness is needed or if high frequency vibrations or turbulence are expected in the flow media Axial Expansion Joints (Metal Bellow Expansion Joints) should be used with Liner. Liner material also can able to eliminate resonance caused by the fluid passing trough the bellows and minimize the contact surface of the fluid. Contact surface of the expansion joint can be minimized by using axial expansion joints with liner.
Application of Axial Expansion Joint
Cold & Hot Water Pipelines
Steam Lines
Ship Building & Marine Applications
Central Heating & Cooling Applications
Boiler, Pressure Vessel & Hear Exchanger Applications
Exhaust Systems
Oil & Gas Pipeline Systems
Industrial Applications
Technical Futures
Bellow Material Stainless Steel AISI304(Opt. AISI316, AISI321)
Intermediate Pipe Material Carbon Steel St37.2(Opt. AISI304, AISI316)
Connection Types Fixed Flanged, Loose (Rotatable) Flanged, Weld Neck End
End Material Carbon Steel St37.2 (Opt. AISI304, AISI316)
Operating Temperature -20 °C/+400 °C
Operating Pressure PN6/PN10/PN16/PN25/PN40/PN64
Nominal Diameters DN25(1) to DN3000(120)
Design EJMA Standards
Parameters: Diameter: DN15-DN8000 Pressure: 0.1Mpa-4.0Mpa Connection form: 1. Flange connection 2. Pipe welded Axial displacement: 18MM~400MM Standard: GB/T12777-2019 Working temperature: -196â??~+450â?? Flange standards: ANSI, DIN, JIS, GB, BS Flange material: SS304, SS316L, SS321, carbon steel Bellows: SS304, SS316L, SS321 Inner tube: SS304, SS316L, SS321, carbon steel Ear plate/Tie rod/Nut: SS304, carbon steel Feature: 1. Absorb axial, lateral and angular displacement 2. Deflection in any direction 3. The most economical and practical 4. Heat resistance, high pressure resistance, corrosion resistance, fatigue resistance and durability Application: Single axial expansion joints are widely used in aerospace, marine, petroleum, chemical, oil refining, power plants, machinery, construction, and information industry. And single axial expansion joints are also important to other industrial equipment manufacturing and pipeline engineering connections to effectively ensure the high safety of the transportation of toxic, flammable and explosive media in the pressure pipeline, avoiding the pollution of the ocean, sky, plants and other environmental pollution caused by leakage pollution.
PE (Polyethylene) Expansion Joint Filler Board is a pre-moulded, high performance joint filler board. It has a closed cell and cross linked structure. It has an excellent recovery of 95% (after compression upto 50% of original thickness), which makes it the most suitable product for the said usage. It is an exclusive product specially designed to be used as expansion joint filler in concrete, brick, block work and isolation joints. It is also rot free and has no bitumen. What are the features and advantages of filler board? Resilient â?? Our EJF boards delivers 95% compression recovery after deflection (compression), that it is the most important and excellent attribute for any expansion joint filler boards. Weathering Effect â?? Joint filler board is resilient and additionally absolutely does not distort under less load transfer from wet concrete. Closed cellular composition â?? Very low water absorption consequently non deteriorating and also resilient Bitumen free â?? Non-staining and easy to apply. Chemically Resistant â?? to almost all types of acids, alkalies and hydrocarbon group materials. Simple â?? Easy to handle, carry, load/unload, install. Load absorption is higher and transfers to the structures very little. What is the use of filler board? Expansion joints at airport runways and taxi tracks The next usage are in mall parking lots as well as structures Furthermore these are applied to Isolation Joints to infill sections In addition to water-proofing also used in concrete flooring. Water retaining as well as water eliminating structures Inter-connecting pathways between buildings Basements, flyovers as well as subways. These kind of boards used in concrete roads as well as toll plaza flooring. Bridges, verandas, abutments and pier hinge joints For more details please visit: https://www.kampun.com/expansion-joint-filler-boards-kampun-hd100-board/
Structure: Bellow Material: SS321/SS304/SS316L on request Pipe Material: Carbon Steel, the material can be customized on request Connection Types: Flange or Welded End Flange Material: Carbon Steel, the material can be customized on request Inner Sleeve: SS321/SS304/SS316L on request Feature: 1.Easy to absorb large expansion movements 2.Reducing the number of axial expansion joints saves on time and cost 3.Minimum application area 4.Preventing axial inaccuracies increases the system safety 5.Using internal guide rings in their design provides highly stable structure for connections Application: External pressure pipeline expansion joints are suitable for pipeline systems that require a large amount of axial compression or extension. Typically used in steam distribution systems and LNG applications. They can be buried or above ground. Piping must be properly anchored and guided.
PTFE flexible rubber expansion joint Single Rubber Joint Pipe Expansion Joint 1. Acid resistance Flexible Rubber Joint can greatly reduce pipeline system vibration and noise, can solve the problem of joint displacement, axial expansion, etc. 2. According to different materials manufacture, flexible rubber joint can be made into many kinds: acid resistance, alkali resistance, corrosive resistance, oil resistance, heat resistance, adapt to many mediums and different environment. 3. Material is polar rubber, good sealing, light weight, easy installation, long service life, avoid contacting with sharp metal device. 4. If use overhead, can match with elastic support, when installation, bolt with diagonal method to tighten up. 5. If pipeline pressure is high, use bolt connect the flange both ends. 6. Flange connection standard is GB4216.3-4216.5. No. Part Meterial 1 Body NR, CR, IIR, NBR, FKM, EPDM 2 Inner & Outer Rubber NR, CR, IIR, NBR, FKM, EPDM, PTFE 3 Body Carcass Nylon cord fabric 4 Reinforcing Ring Multi-strand coppering steel wire 5 Flange Cast and forged carbon steelStainless steelPlastic (CPVC, PVDF, PPH, UPVC, RPP) MAIN DATA Nominal Diameter(DN) Length L Axial displacement Horizontal Isplacement Angular deflection mm inch mm Extension Compression mm (a1+a2) 32 1¼ 95 6 9 9 15º 40 1½ 95 6 10 9 15º 50 2 105 7 10 10 15º 65 2½ 115 7 15 11 15º
Expansion joint,Expansion joint Supplier Size : DN50~DN1000  Pressure : Max 4.0 Mpa  Bellows : Carbon Steel / Stainless Steel  Other parts : Carbon Steel / Stainless Steel
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
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.
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.
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 -
