... : slotting, splice, welding, and finishing operation grating barMaterials: carbon steel or stainless steel Processing: slotting, splice, welding, and finishing operation Property: ... resistance, it find most widely use as platform, aisle, drain cover, and stair thread in power plant, refinery, sewage works, ... surface I-bar reduce the open spaces of the grating yet it is lighter and less costly than a ...