Rectangular bellows compensator, also known as rectangular bellows expansion joint or rectangular bellows, is categorized by the number of bellows into: rectangular single wave compensator, rectangular double wave compensator, rectangular triple wave compensator, and rectangular multi-wave compensator; and by the shape of the bellows into: rectangular right-angled compensator and rectangular rounded compensator.

The rectangular bellows compensator is manufactured from Austenitic stainless steel material or any material as per customer's request, featuring excellent flexibility. It is used for compensating and absorbing vibrations, reducing noise, and eliminating mechanical displacements between pipes or between pipes and equipment. Different metals are chosen based on the application, and the performance and usage of the rectangular bellows compensator vary due to the different materials processed.

Rectangular bellows compensators are used in power plant flue gas ducts, featuring rectangular cross-sections. Each compensator in the pipeline can withstand two-dimensional displacement, while an elbow pipe composed of two compensators can bear three-dimensional displacement.

How to select a rectangular corrugated compensator:

1. After the user selects a rectangular bellows compensator based on the pipeline thermal displacement, at least the following information is required: the flowing medium inside the pipe, the design pressure of the flue duct, the operating temperature, the outline dimensions (length and width) of the cross-section of the flue duct, and the selected wave shape (right-angled wave, rounded wave) and wave number/length/compensation amount, so that we can proceed with the structural design and manufacturing of the bellows compensator.

2. Allowable expansion per wave: Full height type △α = ±24mm, semi-height type △α = ±12mm.

3. Dust shield: Not required for air ducts or dust-free pipes; dust shields should be used for dusty flues.

4. To reduce the number of corrugations in the rectangular bellows compensator, consider cold drawing by 50%.

5. Standard semi-high rectangular bellows compensators are suitable for applications where the cross-sectional area is less than 4.6 square meters and one side of the flue and air duct dimensions is less than 1.5m but greater than 0.6mm. Standard full-height rectangular bellows compensators are suitable for flue and air ducts.