Rectangular Metallic Expansion Joints can be made with a 12" inside radius round corner to eliminate stress risers that exist in the corners of mitered or camera corner rectangular expansion joints.

It is the best design for gas turbine applications because bellows will heat up at a uniform rate to minimize thermal shock. The bellows will be close to the flue gas temperature at all times, providing that the bellows are insulated externally. This will minimize condensate and sulfur based acids forming in the convolutions.

Round Corner
• 100 mm high convolutions, 175 mm radius
• Best design for vacuum service
• Highest pressure capacity (Max.175 KPA)

Mitered Corner
• 200mm high convolutions with 0.8 mm thickness
• Ideal for short face-to-face applications
• Large axial movements, ultra low spring rates

Chamfered Corner
• Easiest to manufacture
• High convolution height (up to 200mm)
• Large movement, Low spring rates