Industrial Metal Bellows
FlexEJ's industrial metal bellows range allow us to configure a metal expansion joint for your application based on a standard convolution matched to any weld end or flange in the materials of your choice. Length to order.
IndustrialShort Axials
IndustrialLong Axials
IndustrialPump Bellows
Industrial Metal Bellows
What are Industrial Metal Bellows?
FlexEJ Industrial Metal bellows offer...
- Design
Extensive range of configurable metal bellows suitable for a wide range of industrial services. - Performance
High quality EJMA calculated bellows manufactured by punch forming in 316 stainless steel. - Application
FlexEJ will help you select the right bellows for the application. - Configurable
Flanges, weld ends, materials, lengths can all be specified to order.
How to specify a metal expansion joint
We design and manufacture metal expansion joints so you are not restricted to our range of standard products, some of which are available in our web shop. For simpler applications a standard product may be entirely suitable but if not we will design to meet your exact requirements.
Metal bellows have a defined fatigue life based on movement cycles. Understanding the movements, if they are concurrent or not and the realistic number of times the movements can occur is fundamental to metal bellows design.
Metal bellows work well up to around 500ºC, above that we use insulation to control the actual bellows metal temperature if the media is above this temperature. Pressure and temperature must be known to select a metal expansion joint.
The most common material used for metal bellows is Stainless Steel - 304, 321, 316 - and for more demanding applications Nickel Alloys - 625, 800, 825. Corrosion is the most likely failure mode for the bellows itself so the correct material selection is important.
Our standard ranges have set lengths for each diameter / movement range but we can design to meet your exact requirements. Making the bellows longer will increase the available movement. Most commonly a flange, we can provide to any specification, or pipe weld ends. Our HVAC standard product is available with BSP Union ends and Copper Pipe ends. If you are uncertain about what flange type you already have installed our Flange Finder will help you identify it.
Call our expert team on +44 (0) 1384 881188 or email us at sales@flexej.co.uk or use Live Chat on this web site - we are here to help, please get in touch.
FlexEJ's Industrial Metal Bellows
FlexEJ has the following ranges of industrial metal bellows available:
Long Axial Industrial bellows
DN100 to DN300
LONG AXIAL INDUSTRIAL BELLOWS
Fully Configurable
FlexEJ's Long Axial range offers large axial movements. Stainless Steel 316 bellows, designed to EJMA, manufactured by punch forming together with flanges to any specification and material or pipe ends in any material. Length to order. These expansion joints are rated for applications up to 12 Barg @ 300°C.
FlexEJ can design and build metal expansion joints to your exact specification, details here...
Industrial Short Axial metal bellows
DN40 to DN250
INDUSTRIAL SHORT AXIAL METAL BELLOWS
Fully Configurable
FlexEJ's Short Axial range offers moderate axial movements. Consequently they are shorter end to end at minimum length than the Long Axial range. Stainless Steel 316 bellows, designed to EJMA, manufactured by punch forming together with flanges to any specification and material or pipe ends in any material. Length to order. These expansion joints are rated for applications up to 12 Barg @ 300°C.
FlexEJ can design and build metal expansion joints to your exact specification, details here...
Industrial Pump bellows
DN50 to DN400
INDUSTRIAL PUMP BELLOWS
Fully Configurable
FlexEJ's Pump range offers small lateral movements suited to pump alignment and vibration applications. Available as tied and untied. Stainless Steel 316 bellows, designed to EJMA, manufactured by punch forming together with flanges to any specification and material or pipe ends in any material. Length to order. These expansion joints are rated for applications up to 12 Barg @ 300°C.
FlexEJ can design and build metal expansion joints to your exact specification, details here...
HVAC and Industrial bellows comparison chart
Which is the best pump or axial bellow for your application? Four potential alternatives to consider:
Stainless steel bellow 
Bellows Material and Design
Is the bellows Stainless Steel and calculated to EJMA?
Flow Liner Flow Liner
Is a Flow Liner included?
Any flange / weld end Any Flange or Weld End
Is any common flange type or pipe weld end available?
Range of lengths Range of lengths
Can an overall length greater than minimum be specified?
Rating barg/°C
Industry experience
FLEXEJ Ltd was formed in 2002 by two professional engineers who brought together an already highly respected design capability with business and commercial skills gained in large multinational companies.
- Our focus has always been on application and design – helping our customers find the best value solution.
- We have a strong engineering and manufacturing team with experience in petrochemicals, refining, nuclear, desalination though to HVAC.
- The team is also very familiar with meeting complex requirements for documentation, in process NDT and test on projects. We have supplied many large end-users such as EDF, Exxon, Shell, Reliance & QatarGas working with major contractors such as JGC, Foster Wheeler & Technip.
