Customized Corten Steel BBQ Grills Manufacturers, Suppliers . Corten Steel BBQ Grills. The BBQ grill has 10mm thick cooking table, and diameter can be 1000mm or 850mm. Through the wood fire in the fire dish (coal is also possible, but is less fun because it does not give flame and no smoke flavor) the plate is heated to about 300˚C. BBQ Grill