Xtarps Truck Taprs, lumber tarps, machinery tarps, steel tarps, coil tarps, flat Smoke Tarp, Purples, are made from truly heavy duty, industrial grade material. Our Xtarps series truck tarps are designed for tough trucking business use. All seams are heat sealed to ensure its waterproof. Tarps are used to secure and cover machines, steel rods, steel cables, steel sheet, plywoods, etc during transporation by flatbed truck.