The options and variations in this category are numerous and include the following:
| Options | Variations |
| Spun Bellows | Circular |
| Pressed Bellows | Rectangular |
| Cold Rolled Bellows | Oval |
| Hydro Formed Bellows | Single Convolution |
| Multi Convolution | |
| Single Expansion Joint | |
| Double Expansion Joint | |
| Single Ply | |
| Multi Ply | |
| Hinged | |
| Gimbled | |
| Tied | |
| Pressure Balanced Expansion Joints |
Designs are in accordance with accepted codes such as EJMA and ASME etc and Quality Control to ISO 9001 ensures our customers of a quality product.
