Metal hose material which features

Corrugated metal hose features:

1, recommended the maximum allowable amount of expansion of each wave: Full-△ α = ± 24mm half-height △ α = ± 12mm.

2, block gray board: less dust on duct pipe can not use on dusty flue profile drywall should be used.

3, to reduce the wave number bellows should be considered cold-drawn by 50%.

4, the standard half-high corrugated metal hose is suitable for cross-sectional area less than 4.6 square meters and a smoke duct dimensions in one side less than 1.5m but greater than 0.6mm occasions. Standard full-height corrugated metal hose for all the smoke duct.