... 1. MATERIAL: TUNGSTEN CARBIDE, STEEL, WELDING ROD 2. LIFETIME: 15,000CBM PUTZMEISTER WEAR RING DN 200 DURO22 #251031006 1. Size: DN200, N230 ... S valve parts3. Delivery Pipe(both normal and hardened) , elbow(welding& casting), reducer, rubber hose, clamp coupling, cleaning sponge ball, rubber ...