KINJOINT SSEJ-250W-SG is a welded stainless steel bellows expansion joint with tie rods for HVAC, mechanical and industrial piping systems. It uses Schedule 40 welded ends and SST304 stainless steel bellows, with 16 bar and 25 bar working-pressure configurations and an operating-temperature range of −50°C to +450°C. Published SSEJ-250W-SG configurations provide ±25 mm or ±50 mm axial movement. Kinetics Middle East provides technical selection and project support for UAE, GCC and MENA piping applications.
Engineered for Performance.
KINJOINT SSEJ-250W-SG is an engineered welded stainless steel bellows expansion joint with tie rods designed to accommodate dimensional changes caused by thermal expansion and contraction in piping systems.
The flexible bellows are manufactured from SST304 stainless steel, while the SSEJ-250W configuration uses Schedule 40 welded pipe ends for integration into welded HVAC, mechanical and industrial piping systems.
The SG configuration incorporates tie rods/control hardware to control movement within the engineered expansion-joint assembly. Kinetics publishes SSEJ-250W-SG configurations for 16 bar and 25 bar working pressures, with a working-temperature range from −50°C to +450°C and axial-movement options of ±25 mm and ±50 mm.
Kinetics Middle East supports consultants, MEP contractors, mechanical contractors, piping engineers and project teams requiring stainless steel expansion joints for UAE, GCC and wider MENA projects.
The November 2024 Kinetics product datasheet identifies SSEJ-250W as the welded-end model, specifies tie rods through the SG suffix, and lists the applicable construction materials.
The SSEJ-250W-SG ±25 mm movement configuration is published with:
The dedicated Kinetics drawing also warns that control units must be used to protect the expansion joint from excessive movement where the piping is not properly anchored.
For piping systems requiring greater axial travel, Kinetics also publishes an SSEJ-250W-SG ±50 mm movement configuration.
Published operating data includes:
The ±50 mm model-specific drawing uses different bellows arrangements according to nominal size, so the exact configuration and overall length must be selected from the applicable Kinetics drawing rather than inferred from the ±25 mm version.
The November 2024 KINJOINT general product datasheet provides standard SSEJ-250W dimensional data from DN15 through DN600. It also states that larger sizes, movements and working pressures can be supplied on request.
The model-specific SSEJ-250W-SG movement drawings published on the Kinetics website extend through DN1000 for applicable configurations. Therefore, the exact size, movement and overall length should always be confirmed against the selected project drawing.
KINJOINT SSEJ-250W-SG welded stainless steel expansion joints are suitable for engineered piping systems requiring controlled accommodation of thermal expansion and contraction.
Typical applications include:
Final product selection must be based on nominal pipe diameter, working and design pressure, operating temperature, calculated movement, process medium, pipe layout, anchors, guides and supports.
The flexible bellows element is manufactured from SST304 stainless steel, providing the flexibility required to accommodate controlled thermal pipe movement.
SSEJ-250W-SG is published in both 16 bar and 25 bar working-pressure configurations.
The published operating-temperature range is −50°C to +450°C.
Kinetics provides separate SSEJ-250W-SG technical drawings for ±25 mm and ±50 mm axial movement, allowing the product to be selected according to calculated thermal pipe growth.
The W configuration uses Schedule 40 welded pipe ends, making this page specifically relevant to welded mechanical and industrial piping installations.
The SG suffix identifies the tie-rod configuration. Kinetics describes tie rods as an optional feature used to control movement in its expansion-joint range.
The published construction includes an SST304 inner sleeve. Kinetics states that liners can help protect the inner bellows surface from erosion and flow-induced vibration.
Metal bellows expansion joints provide engineered piping flexibility within a compact installation compared with conventional pipe loops. The Kinetics datasheet specifically identifies reduced space and maintenance requirements as advantages of bellows expansion joints.
The product datasheet identifies Kinetics Middle East L.L.C. in Dubai, UAE, providing a clear manufacturer/supplier entity connection between KINJOINT expansion joints and Kinetics Middle East.
The SSEJ-250W-SG must be described carefully because tie rods, limit rods and control rods are not interchangeable engineering terms.
Kinetics’ own product data describes the SG configuration as incorporating tie rods to control movement, while the model-specific drawing also refers to control units and warns against excessive movement when the piping is inadequately anchored.
For this reason, the page should not claim that the rods automatically eliminate all anchor requirements or that every SG configuration restrains pressure thrust in exactly the same manner.
The Expansion Joint Manufacturers Association (EJMA) distinguishes between tie rods and limit/control arrangements and explains that restraint hardware directly affects allowable expansion-joint movement.
Correct anchors and guides are essential to the reliable operation of metallic bellows expansion joints.
Kinetics specifically instructs users to consult the company regarding proper anchoring and guiding to prevent expansion joints from extending or buckling because of pressure thrust.
The SSEJ-250W-SG model-specific drawing further warns that control units must be used to protect the joint from excessive movement where the piping is not correctly anchored.
The expansion joint, tie-rod/control arrangement, anchors, guides and supports should therefore be treated as parts of one engineered piping system.
Before installation:
EJMA states that torsional movement can reduce bellows life or cause failure, while Kinetics requires appropriate anchoring and guiding for its expansion joints.
SSEJ-250W-SG is the welded stainless steel bellows expansion-joint configuration with tie rods/control hardware.
SSEJ-250W-SG-ES adds an external protective shroud around the expansion joint.
Use this page specifically for the rods-only SSEJ-250W-SG configuration.
For the version with additional external bellows protection, view:
SSEJ-250W-SG-ES Stainless Steel Expansion Joint with Rods & Shroud
The Kinetics datasheet explicitly uses the ES suffix for the external-shroud option and states that shrouds protect the outer bellows surface from damage.
For the broader threaded, welded and grooved SSEJ-250 product family, view:
KINJOINT SSEJ-250 Stainless Steel Expansion Joints
For the protected version with rods and an external shroud, view:
SSEJ-250W-SG-ES Stainless Steel Expansion Joint
For larger-size and higher-pressure stainless steel expansion-joint applications, view:
KINJOINT SSEJ-500N / SSEJ-500H Stainless Steel Expansion Joints
For flexible hose-and-braid thermal movement compensation, view:
KINJOINT SSEL Stainless Steel Expansion Loop
For technical selection, project submittals or quotations:
Kinetics Middle East provides engineered expansion-joint, flexible piping, vibration-isolation, acoustic and HVAC solutions for consultants, contractors and project teams in the UAE and regional markets.
For SSEJ-250W-SG technical selection, provide:
The official November 2024 product sheet identifies Kinetics Middle East L.L.C. in Dubai, UAE and advises users to consult its technical staff where application conditions require review.
KINJOINT SSEJ-250W-SG is supported by Kinetics Middle East technical documentation, including Product Data Sheet KME-SSEJ-FLT-2024, Edition November 2024, together with dedicated SSEJ-250W-SG drawings for ±25 mm and ±50 mm axial-movement configurations. Project teams should select the final expansion-joint configuration using the approved Kinetics datasheet, dimensional drawing and piping-system design conditions. Kinetics Middle East L.L.C. provides technical application support from Dubai, UAE.
KINJOINT SSEJ-250W-SG is a welded stainless steel bellows expansion joint with tie rods/control hardware designed to accommodate thermal movement in engineered piping systems.
The W identifies the welded-end configuration. Kinetics specifies Schedule 40 welded ends for SSEJ-250W.
Kinetics’ November 2024 datasheet instructs users to add the SG suffix for the tie-rod configuration.
The published SSEJ-250W-SG drawings specify 16 bar and 25 bar working-pressure configurations.
The published working-temperature range is −50°C to +450°C.
Kinetics publishes dedicated SSEJ-250W-SG configurations for ±25 mm and ±50 mm axial movement.
The bellows are manufactured from SST304 stainless steel.
The Kinetics datasheet specifies carbon steel tie rods.
The SG configuration is the rods/control-hardware version. Kinetics uses the ES suffix where an external shroud is added.
SSEJ-250W-SG incorporates tie rods/control hardware. SSEJ-250W-SG-ES adds an external protective shroud around the bellows.
The piping system must be appropriately anchored and guided according to the approved design. Kinetics specifically warns that inadequate anchoring can allow excessive movement or buckling caused by pressure thrust.
Yes. The official product datasheet identifies Kinetics Middle East L.L.C. in Dubai, UAE.
DATA SHEET
1 NEW KINJOINTS SSEJ-150-250-300 DATASHEET
DRAWINGS
KINJOINT SSEJ-250W-SG stainless steel expansion joints are designed for HVAC, chilled-water, heating-water, district cooling, mechanical plantroom, utility and industrial piping systems requiring controlled thermal movement with Schedule 40 welded connections. Published configurations are available at 16 bar and 25 bar with ±25 mm or ±50 mm axial movement. Final selection must be based on pipe size, pressure, temperature, calculated movement, process medium, anchors and guides.
SST304 bellows: Stainless steel flexible bellows construction.
Welded connections: Schedule 40 welded pipe ends.
Pressure options: 16 bar and 25 bar.
Temperature range: −50°C to +450°C.
Movement options: ±25 mm and ±50 mm axial movement configurations.
Tie rods: SG configuration incorporates carbon-steel tie rods/control hardware to control movement.
Inner sleeve: SST304 internal sleeve in the published construction.
Compact design: Accommodates thermal pipe movement without the space required by conventional rigid expansion loops.
Wide size capability: Standard 2024 datasheet dimensions through DN600, with larger/model-specific sizes available according to Kinetics technical drawings and project requirements.
Regional support: Kinetics Middle East technical support for UAE, GCC and MENA projects.
Verify the correct SSEJ-250W-SG size, 16/25 bar pressure rating and ±25/±50 mm movement configuration before installation. Confirm the Schedule 40 welded-end dimensions and inspect the bellows, tie rods and control hardware for damage. Maintain the approved rod/control-unit arrangement and install all anchors, guides and supports according to the engineered piping design. Protect the bellows from impact, weld spatter and arc strikes, avoid torsional twisting and do not force the expansion joint to correct unintended pipe misalignment. Do not exceed the approved pressure, temperature or movement rating. Refer any deviation from the approved piping arrangement to Kinetics Middle East before commissioning.
