Shijiazhuang Shisan Hang International Trade Co., Ltd. presents 21-4N Austenitic Heat-Resistant Steel Engine Valves, premium core components engineered specifically for high-performance passenger cars and medium-duty commercial vehicles. Crafted from 21-4N austenitic heat-resistant steel, these valves deliver exceptional high-temperature stability and excellent creep resistance—solving the common industry challenge of valve deformation and failure under prolonged high-temperature conditions, ensuring long-term engine reliability.

Designed to withstand the high RPM, long-distance driving of passenger cars and the continuous high-load operation of medium-duty trucks, we employ precision forging and multi-stage grinding technology to guarantee  dimensional accuracy and sealing performance. In the high-temperature exhaust gas environment of engines, the products maintain stable metallographic structure and mechanical strength, effectively resisting high-temperature oxidation and valve stem fatigue. This significantly extends service life and reduces maintenance frequency and operational costs.