#metalbellowdesign

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 surface. These help in providing a compressive and expansive effect on the device thereby helping to withstand extreme conditions.

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.

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.

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.

Leveraging on our experience and expertise from last 40 years Pliant Bellows is a leading metal bellows manufacturers in India and flexible bellows coupling manufacturers, and Bellow Expansion Joints manufacturer in India

Kwality products were started under the leadership of late Mr Suresh Uttarkar. The company has evolved to be one of the best designer, supplier and Expansion joints manufacturer in India. In 2004 Anand Uttarkar was deployed as the CEO of the company. Since then the company has targeted to be a global player in the field of aerospace components manufacturing. The company markets the products under the registered brand name "Pliant Bellows" with expertise and advanced products of Metal Bellows. which are pioneer and leaders in manufacturing quality bellow products globally?

The company deals with diverse industries from nuclear, oil and gas, ultra-high vacuum, textile, defence, Cement, Fertilizer, Chemicals, Sugar, Steel & Iron, Refineries, Power Plants, Petrochemicals, Textile, Automobiles, Railways, Shipping, Heavy Industries, Instrumentation, Cryogenic etc.

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.

Product List Which is providing by us

➡Metal Bellows

➡Expansion Joints

➡Stainless Steel

➡Bellow Coupling

➡Valve Bellow

➡Gimble Expansion Joints

➡Hinged Expansion Joints

➡Universal Expansion Joints

➡Pressure Switch Bellows

We are as a manufacturer provide our services to all over the world, with good quality of product and reasonable cost.we are the best manufacturer of metal bellows in India.

                       SS Bellows

SS- Stainless Steel

How To Make Stainless Steel Bellows?

The process of manufacturing SS bellows is simple, however, it is extremely necessary to do the process by keeping in mind the several standards and regulations such as the ASME, EJMA, and ISO standards. A good stainless steel bellow manufacturer conforms to these to produce the best quality products.

Bellow Designs

The first problem SS bellow manufacturer solves is to determine the design parameters. The diameter for the SS expansion joint is determined based on the client's requirement. Depending on the expected life cycle, the thickness of the SS bellows is decided. Based on the thickness, the number of plies required is set. If there is a need to absorb a good amount of vibration in the system, or if there is a requirement for very long life cycles, multiple plies are used. If there are only minimal movements or if infrequent temperature change, as a single-ply may suffice.

Making the Bellows Tube

Once the design parameters have been determined, the tubes are formed. For this process, stainless steel sheets are sheared as per the required specifications. In the case of multi-ply, the outer sheets are slightly larger than the inner ones. After this, these sheets are then rolled into cylindrical shapes. The tubes are then seam welded in order to avoid splitting. The formed tubes are inspected, cleaned, and then telescopically.

Forming the Bellows

The next step is to form convolutions on the surface of these tubes. To do this, at Kwality Products, we use hydroforming machines, or mechanical expanders, as per the specification of the required stainless steel pipe bellows. The tube is placed on a die, and hydro pressure is used to mould it into the desired shape, thereby forming corrugations.

Re-Rolling Process

In this step, the convoluted tubes are further processed and cold worked to its exact shape and geometry as desired by the clients. Failure to do so can lead to poor performance characteristics. In cases of multi-ply, there may be seam spot welding done on the bellow necks.

Trimming and sizing the Bellows Necks

In the final process, a rotary shear is used to trim the necks of the bellow to achieve the required length and dimensional accuracy. Apart from this, using expanders, the necks are also resized so that they are a perfect fit over the pipe or the flange they are to be fitted. The bellows are then used to assemble the stainless steel bellows expansion joints.

Characteristics Of Stainless Steel Expansion Joints: 

High temperature and pressure resistance

Vibration absorption

Compact and space-saving

Abrasion-resistant