Steel grating ditch covers of GU type
For most of normal ditches built by concrete without beads, it is very simple and economy to use U type grating covers, which doesn’t require special ditch edges. When loading T-6, T-14, it is suggested to use angle steel at edges of ditch, and may use prefabricated blocks to build U type ditch, so that the leaking of sewage to ground can be prevented effectively. This kind of Prefabricated U type ditches may also use GU type gratings as covers.
When the traffic is required, GU type grating covers are only suitable for side ditches.