Welded bar grating is the most common available on the market. It is manufactured by a resistance-weld process. Crossbars are fused to bearing bars to form a permanent joint. They are economical, yet durable for most applications. Uses include ground mats and transformer pit covers for the electrical substation industry; trench grating covers for the automotive industry; walkways for aggregate conveyor systems; wet drainage applications at poultry plants and wastewater facilities.