Engine spare parts
The cylinder head is mainly made of nodular cast iron. In terms of quality control, the cylinder head employs nodular cast iron to guarantee its strength and hardness and applies process measures of forced convection and opening of unloading groove to improve thermal load of cylinder body. In terms of precision control, the production process is inspected from 6 different directions with precise ruler and thickness gauge. The maximum warping of the lower plane is 0.05mm or smaller and the application limit is 0.02mm to maximize sealing tightness.