BEST-IN-CLASS AXIAL EXPANSION JOINTS Axial Expansion Joints are designed to absorb axial movements in piping systems (extension and compression in its longitudinal axial direction). The thermal expansion of a straight pipeline section between two fixed points can be absorbed by Axial Expansion Joints with a relatively compact built-in length. These Expansion Joints offer a simple and cost-efficient solution in terms of movement compensation. Axial Expansion Joints can be equipped with all kinds of connectors, such as welding ends or welded or loose (rotatable) flanges, making them suitable for a wide range of applications. Design range within Axial Expansion Joints Belman Axial Expansion Joints can be designed within the following range: DIMENSIONS: DN 15-12.000 PRESSURE: Up to 150 Barg (2176 psi) TEMPERATURE: -256°C to +1000°C MATERIALS: Austenitic stainless steels, High alloys, Duplex, Titanium, Hastelloy, Incoloy, Inconel, Alloy 59 DESIGN CODES: EN 13445, EN 13480, EN 14917 ASME VIII, div.I, ASME B31.3 ASME B31.1, EJMA and others on request TESTS: Radiographic examination (X-ray), Helium leak testing, Pressure test, Air test, Dye penetrant test, Magnetic particle examination and many more AXIAL EXPANSION JOINT PRODUCT RANGE Belman offers a full range of standard stainless steel Axial Expansion Joints, specifically designed to absorb movements in piping systems. AXIAL with LOOSE Flanges AX1BU / ID no. 41 DN 25 – 2200 PN 2,5 – 25 Product sheet (PDF) AXIAL with welded Flanges AX1FU / ID no. 42 DN 25 – 2200 PN 2,5 – 25 Product sheet (PDF) AXIAL with welding ends AX1SU / ID no. 43 DN 25 – 2200 PN 2,5 – 40 Product sheet (PDF) CUSTOMISED AXIAL EXPANSION JOINTS Belman expertly engineer customised Axial Expansion Joint solutions Request Customised AXIAL EXPANSION JOINTS CUSTOMISED FOR AXIAL MOVEMENTS CASE STORIES AXIAL Expansion Joints WITH TITANIUM BELLOWS Compared to its alternatives Titanium offers a lightweight construction for aggressive environment. Therefore these Titanium Expansion Joints are weighing in at only 6 kg. READ MORE GIANT INLINE PRESSURE BALANCED This 4-meter long DN 2500 Inline Pressure Balanced Expansion Joint having a balancing bellow of an amazing DN 3800. READ MORE Expansion Joints Handles High Pressure Thrust Force Highly engineered Expansion Joint handling both high pressure, high pressure thrust force as well as absorbing axial movement for an oil Platform in Norway. READ MORE AXIAL EXPANSION JOINTS TECHNICAL DESCRIPTION AXIAL EXPANSION JOINT DESIGNS Belman offers customised solutions for Axial Expansion Joints that meet the specific requirements and conditions of all applications. These tailored solutions take into account factors such as temperature, pressure, material compatibility, and installation conditions. By adapting the Axial Joints to the customer’s particular needs and the industry in question, optimum performance and durability can be ensured. Our Expansion Joints are available in various designs, sizes, and materials to meet different requirements and applications. The high quality and reliability of Belman’s Stainless Steel Expansion Joints guarantee a long service life and optimal performance of pipe systems. AXIAL MOVEMENT Axial movement is considered an elongation or compression of the pipe system along its longitudinal axis, meaning that in the process of absorbing the movements, the overall length of the expansion joint will either extend or compress. Axial Expansion Joints, which are designed to absorb large movements, can contain one, two or several bellows in one unit, and larger movements can also be achieved by pre-tensioning or by installing several expansion joints on the pipe section. Depending on the nominal diameter and length, they have the ability to absorb minor lateral and angular movements and installation tolerances. However, we recommend the utilisation should be limited to their main function, otherwise its service life may be negatively impaired. Where there is a need for absorption other than that of axial movements, we strongly recommend alternative options, and Belman will be pleased to advise on alternative solutions, such as Lateral Expansion Joints, Angular Expansion Joints or Universal Expansion Joints, ensuring the most suitable choice for your application. Definitions Axial movement is shown as AX and stated in mm. Compression and elongation are indicated as negative (-) and positive (+). Example Elongation +10 and compression -20 will be shown as: AX +10/-20 mm. Equal longitudinal movements are shown as: AX +/-20 mm (2δN). ADVANTAGES & REQUIREMENTS Axial Expansion Joints represents several advantages for the piping designers, but they also set some requirements for the installation. These can be seen here along with more facts about them: ADVANTAGES What are the advantages of using Axial Expansion Joints? Simple solution for compensation of temperature fluctuations No change in the flow direction Compact and space saving solution Relatively low cost REQUIREMENTS What are the requirements for using Axial Expansion Joints? Strong fix points and good guides are required Large movements require utilisation of several Axial Bellows Many fix points and guides are needed for long pipe sections Higher costs for fix points and guides HOW DOES THE AXIAL EXPANSION JOINT WORK? This animation showcases how axial movement is absorbed by the Axial Expansion Joint BELMAN YOUTUBE CHANNEL More animations on how different Expansion Joint types absorb movements can be seen on the Belman Group Youtube channel Go to Belman Youtube Pipework Guidelines INSTALLATION EXAMPLES Straight piping section with axial expansion joints This illustrates the importance in the use of the three fix points, as the use of two or more axial expansion joints in a piping section will create an undetermined arrangement. The amount of movements imposed on each expansion joint is not controlled, as the pipe between the two bellows can move sideward freely in both directions depending on the friction of the pipe supports and the differences in stiffness between the bellows. It is always important to have one axial expansion joint between two fix points. Axial pipe system expansion in a pipe system with branch connection Typifies good practice in the use of expansion joints to absorb axial expansion in a pipe system with a branch connection. The fix point at the junction, which in this case is a tee, is designed to absorb the thrust from the expansion joint in the branch line. Note the proximity of each expansion joint to a fix point, the closeness of each first guide (G1), the spacing between the first guide (G1) and the second guide (G2) and the spacing of guides (Gn) along the remainder of each pipe section. GET MORE INSTALLATION EXAMPLES Download AXIAL EXPANSION JOINTS INFORMATION & TOOLS To ease the work for everyone involved in working with Expansion Joints, we provide useful engineering tools and further technical information. DOWNLOAD CENTER Here you can download useful technical information and further materials related to Expansion Joints such as: Guide & Catalgoue Product brochures Look Books showing design options Data sheets Download MORE INFORMATION About Axial Expansion Joints on pages 22, 25, 93-135 in the Belman Expansion Joint Catalogue Download BELMAN ACADEMY In Belman Academy we help you increase your knowledge on Expansion Joints and get tips and tools that will ease your work with Expansion Joints, such as: Technical articles and videothek How to guides Technical tutorial videos Trainings (video, live) Download INSTALLATION On installation of Axial Expansion Joints in the Belman installation instruction Go to Installation instruction TRUSTED CRAFTMANSHIP ENGINEERED EXPANSION JOINTS Since 1994 EXPERTLY FINDING THE RIGHT SOLUTION LATEST PROJECTS & REFERENCES Belman expertly engineers the optimum flexible solution to absorb movements in the pipe system while ensuring smooth operation and solutions to any operational issues for its clients. By customising and optimising the flexible solution, Belman supplies Expansion Joint solutions that provide a better TCO (total cost of ownership). See some of our latest projects and references here. REFERENCES LATEST PROJECTS REASONS TO DO BUSINESS WITH US HIGH QUALITY CUSTOMISED SOLUTIONS DOCUMENTATION ON-TIME DELIVERY SHORT DELIVERY TIME FAST RESPONSE
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