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Metal Bellows

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Metal Bellows

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  1. Metal Bellows Bellows in layman terms are simply devices that have concertinaed sides and have the ability to expand or compress as per the necessity. Normally, bellows are used in industries where there is a need to transfer high temperature and pressure fluids that can cause deformations and stress of varying capacities. Bellows can be made from metal, rubber, or even Teflon depending on the requirements. What Are Metal Bellows? Metal Bellows ​are bellows that are made from metals such as stainless steel, or any other metal alloys. Used in metal expansion joints for the safe and convenient functioning of pipelines and ducts, these are extremely tolerant to heat and pressure, and also have excellent corrosion resistance. The metal bellows are manufactured by first forming cylinder from thin sheets, and then creating circumferential convolutions on the compressive and expansive effect on the device thereby helping to withstand extreme conditions. surface. These help in providing a To make metal expansion joint bellows, metal bellows manufacturers attach the metallic bellows with end fittings, control rods, liners, cover, and other components to form a whole product. The metallic expansion joints are used in various industries and help contain the stress in the system such as axial, lateral, angular, and universal stress, as well as help in controlling the vibrations, thereby protecting the pipeline as well as the surrounding pieces of equipment.

  2. However, the production is not that easy. There are plenty of protocols and regulations to be followed in the manufacturing process, along with mandatory testing to be done as well. At Kwality Products, we use state of the art equipment to manufacture metal bellows. It is done using hydroforming machines, and mechanical expanders. Apart from these, the manufacturing is done in according to the EJMA standards, as well as pertaining to the ASME codes, thereby maintaining excellent product standard and quality. How To Install Metallic Bellows? since the metal expansion joint manufacturer provides with the bellow joints of various dimensions and features as per your requirement, straightforward installation of the metallic bellows in the system is not enough. There are several guidelines as per the EJMA to be followed while installing the metallic bellows expansion joints. The following are the points to be followed to ensure a successful and safe installation. ● Installation Guidelines ○ The metallic expansion joints are made of thin gauge material. As a result, it is necessary to follow the instructions to avoid damage to the product. Failure to do so may lead to premature failure or short life cycle. ○ Be careful while using cleaning agents as these may contain chlorides which can eventually lead to corrosion. You may use isopropyl alcohol to clean the surfaces if required. ○ Do not use wire mesh, steel wool, or any other abrasive products to clean the surface. ○ Avoid torsional manoeuvres during any process in the installation. ● Storage of Metal Expansion Joints ○ It is strongly advised to store the bellows in a safe and secure storage area to avoid any damage. Mechanical damage caused by dropping, stacking, or bumping the product can lead to failure and shortened life cycle. ● Removal of Old Expansion Joints ○ The position to which the expansion joint has to be installed must be examined carefully such that the opening does not exceed the tolerances. Expansion joints cannot make up for severe piping misalignment. If there are large misalignments, you must contact the manufacturer before installation.

  3. ● Handling Expansion Joints ○ Do not use bars or ropes through the holes in the joint to lift. There may be lugs in some bellow expansion joints. The lighter expansion joints may be transported by the ends. Do not carry them on the bellow part. Do not use chains or other abrasive material directly on the bellows. ○ Shipping bars may be installed on the expansion joint to maintain the bellow’s length and to provide stability while shipping. Do not remove these until the installation is complete. ● Preparation to Install Metal Expansion Joints ○ Remove all the protective covering on the metallic expansion joints. Check the inner region for any foreign objects. If applicable, align the expansion joint in the direction of the flow. Installing the expansion joint in the wrong direction will lead to failure of the device. ○ Use ideal lifting devices to position the expansion joint to the required position in the piping system.

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