Steel structure workshop gutter, local people called "sink", generally located under the eaves, the main role is to let rainwater centralized collection, unified discharge. Speaking of "gutter", it not only appears in the steel structure of the factory, but also can be used in the roof of the movable board house and other buildings.

Steel structure engineering roof drainage water organized drainage and no organized drainage, organized drainage is generally the rainwater collected to the gutter by the rain pipe drainage, rainwater gathering ditch is called gutter; Disorganized drainage means letting the water go.

Groove roof refers to the sunken part between the two inner sides of the building roof, divided into the inner and outer groove roof. Inside the gutter points to the gutter inside the external wall namely, there is parapet commonly, outside the gutter is to carry out the external wall gutter, without parapet generally.