ENGPAR Sales Pvt. Ltd. Offers Sand Casting Truck Liner. ENGPAR Sales Pvt. Ltd. Supplies piston rings. Sand Casting Truck Liner is made of centrifugal casting providing uniform hardness all over which is between 90 HRB to 95 HRB. The inner bores of Sand Casting Truck Liner are cross honed to provide maximum smoothness to the surface which in turn reduces friction when this inner bore is contacted with piston rings. These are available for Tata, Mercedes, Volvo, Leyland, Bedford, Mitsubishi etc. These are used for automobiles, tractors, industrial and diesel engines.