Safety Gratings Come with Five Types for Any Use Founded in 1983, Mengke Safety Grating Co, Ltd. Has established a reputation for supplying high quality safety gratings and courteous and knowledgeable service. For more than 30 years, we have been focusing on manufacturing safety gratings including Traction-Grip, Diamond-Strut, O-Grip and Interlock Grating. They are extensively used in industrial plants and commercial areas where pedestrian traffic is heavy.