• A A Metal Flexible Ind

Rectangular Expansion Plate Type

A A Metal Flexible Ind Rectangular expansion joints are manufactured to individual sizes and functional requirements by combining standard corrugated elements and corner configurations with self developed fabricating methods to be used as duct expansion joints.
Rectangular expansion joints are provided with either weldable duct ends or with fabricated angle flanges. These duct expansion joints are normally used in large size ducting with relatively low internal pressure.
The most commonly used material for the bellows elements are austenitic stainless steels of different grades and carbon steel for the end connections. Material selection is mainly determined by the service conditions. They design and manufacture duct expansion joints confirming to the internally recognised E.J.M.A.( Expansion Joints Manufacturers Association)Rectangular duct expansion joints are normally supplied with any of the three corner configurations as illustrated below namely

A> bevel corner

B> mitre corner,

C> rounded corner.

They recommend the following illustrated dimensioning system for bolted fabricated flange configuration. Many times duct expansion joints are supplied with matching flanges to be welded to the other side of the duct which can be bolted with the flanges of the rectangular expansion joints easily.