Our Engine valve covers car, heavy duty truck,light truck,minicar,engineering machinery,shipping and agricultrual machinery.
The material we used: High quality 40Cr structural alloy steel,4Cr9Si2,4Cr10Si2Mo,21-4N high performance
heat resistant steel etc.
Equipment we used: CNC and semi-automatic equipment
Technical:advanced manufacturing technology of double metal friction,welding,precision forging,form grinding,
small end welding,the surface of the soft nitriding.