Compound steel grating and installation champ model compound steel grating is the product composed of steel grating with a given capability of transverse span and checkered steel plate with sealed surface. 

It can be made of any steel grating of any model and “i” checkered steel plate of any thickness. 

G323/40/100 steel grating is usually used as the bottom plate; checkered steel plate usually adopts plate of3mm, 4mm, 5mm, or 6mm.