Square accordion fittings are specially used in important industries such as refineries, petrochemicals, steel industry, cement production, power plants, etc. Due to the fact that the ducts are produced in different and non-standard sizes, the 4-ear connections are also made according to the customer’s order. In this way, they can differ in terms of dimensions, shape, conditions such as temperature and pressure, amount of movement, etc. These joints, like the circular accordion joints, can absorb lateral, axial and angular movements. Of course, in square joints, angular and lateral movements relative to the width or length of the duct can cause different conditions.
Lateral movement in square accordion joints causes considerable stress. Therefore, if these connections are supposed to move intermittently, it is better to use universal types. In these cases, especially if your duct is long or wide, it is better not to use single connections.
For large size ducts used for low pressure gas fluids, fabric fittings are known to be the best option. Fabric joints can absorb all movements in all planes simultaneously and many times. In addition, these joints have the ability to repel twisting movements. It is necessary to know that in the same conditions, installation, replacement, repairs and maintenance of fabric connections are easier than other connections and are associated with lower costs.
In circular joints, the internal pressure in the fluid causes peripheral stresses in the joints. Of course, these tensions can be moderated to an acceptable extent by using reinforcing rings and increasing the thickness of the blouse. In 4-ear accordion joints, which are mostly produced in large sizes, the width and length of the duct are different. Therefore, in these connections, the problem can be solved by using support sports.
These sports will prevent swelling and swelling in the blouse.
Square accordion joints are designed and produced according to the revised EJMA standards and in two profile modes, U and V. According to the provided shapes, the ear of each 4-ear connection can be designed in the following ways:
- Farsi single words
- Farsi double quotes
- round corner
- Has a camera angle
Introducing Gostar Peyman Vibration Company
Gostar Peyman Vibrating Company is known as the first and only company producing square accordion fittings with rounded corner and integrated non-welded in Iran. This set has a special skill in rounding the corners of all kinds of accordion accordion joints, and in this way, it helps a lot to increase the life of the joint and increase the absorption of movements, especially lateral movement.
