================================================================= In oil and gas operations, nozzles face some of the most punishing conditions in the entire fluid path. High-velocity drilling mud loaded with cuttings and sand, high-pressure jetting fluids, and abrasive slurry all accelerate erosion. When a nozzle wears, orifice diameter grows, hydraulic performance drifts, jet quality degrades, and the risk of washout or tool failure rises. Tungsten carbide (and in selected