Road Planing Machine: 1 Vein width:3-8 mm 2 Grooving depth ... Working speed:2.5-3m/min 2012 New Designed Road Planing Machine:This product is an indispensable tool ... airports, bridges, docks.It is suitable for the mud road, roads, airport runways and other non-slip surface engraved ... broom, napping machine.After grooved by this machine,the road surface is slip-proof, durable, smooth surface, both ...