Metal Expansion Joints

Metal Expansion Joint

metal-expansion-joints-vv Metal Expansion Joints

Size: from 1/4" to 300"

 Bellows Material: SS 304, SS 316L, SS 316Ti, SS 321, AL, CU, ... Single or Multiple Layer

 Shape: Circular, Rectangular

 Configurations: Axial, Double, Universal, In-Line Pressure Balanced, Pressure Balanced Elbow, Hinged, Gimbal, Thick Bellows With Deep Convolutions, Clamshell Circular Expansion Joint

Whenever pipes and ducts are subject to expansion caused by frequent changes in temperature or pressure, when vibrations or movements occur in piping/ducting systems, when fluids are to be conveyed without leakage caused by pressure and high load must be sustained or vacuum is present, flexible joints are required. These components include Metal expansion joint, Metal flexible hose, Rubber Expansion Joint, Rubber hose, Composite Hose, Textile Fabrics Expansion Joint.

EGP as a powerful Manufacturer of expansion joint in Iran, is able to produce Expansion joint from 1” up to 300” diameter would resistant against 1000 °C in various pressure.   Expansion joint is simply a bellows element with end connections. Regardless of accessories, such as liners and covers, it will deflect in any direction or plane that the bellows will. It is the least expensive type, but requires that the piping be controlled as to the direction of the movements required of the unit. The expansion joint should not be expected to control the movement of the pipe. If the piping analysis shows that the expansion joint must accept axial compression, then the piping must be guided and constrained so that only that movement will occur. This expansion joint will not resist any deflections with any force other than the resistance of the bellows, which is a function of the spring rate times the deflection amount. It is incapable of resisting the pressure thrust along its axis, which is the product of the pressure times the effective, or cross sectional, area of the bellows. Large diameter units, even with low pressures, can generate very large axial pressure thrust forces, which must be reacted by main and directional anchors. Otherwise the expansion joint will extend with disastrous results.

Erteash Gostar Peyman Co. has adopted and encourages the use of the definitions of expansion joint components and related equipment as published by The Expansion Joint Manufacturers Association. The definitions are taken, in part, from the Nine Edition of the EJMA Standards.