
In chimney systems, they are the clamps used to connect the flue pipes to each other.
d | 80 | 100 | 130 | 150 | 180 | 200 | 230 | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 |
D | 130 | 150 | 180 | 200 | 230 | 250 | 280 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | 650 |
A | 47 mm |