4 valve 250cc engine  

Details:

1. Material: 40Cr, 40Cr9Si2, 4Cr10Si2Mo, 5Cr21Mn9Ni4N(21-4N)
2. The valve's cone surface with heat resistance hardening chromium plating
3. A little end face of nitride rod position with a thin steel plate by butt welding
4. High precision and high heat resistance
5. ISO and TS16949 certificated

 our engine valves are suitable for:

TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD,FIAT,HINO,HONDA,HYUNDAI,ISUZU,KAWASKI,KIA,LADA,LEYLAND,LISTER,MAZDA.BENZ,MITSUBISHI,NISSAN,OPEL,PAYKAN,PERKINS,PEUGEOT,ROVER,SUBARU,SUZUKI,VOLVO,VOLKSWAGEN AND SO ON.

Features:

Inlet valve is good hardness,wear resistance,corrosion resistant,withstand high temperature,resist deformation and also called Martensite.

Exhaust valve is high exhaustion strength,withstand high temperatures, resist deformation,anti-fatigue,corrosion resistant and also called Austenite.

Techniques:

Bimetal---double metal friction welding (SUH3+SUH35), small soldering terminal pin, small soldering alloy, shaft chromium-plating , surfacing nitration treatment(Tufftride),frequency induction quenching, Stellite(tip welding)------get high hot hardness at the seat.

We also can offer you the above piston ,piston ring and cylinder liner:

We are looking forward to do the longterm business with you in the future!

Related Products:

Gurantee:we strictly adhere to the GB1148-82,JB3931-85 and JB3932-85 Criterion  

ISO and TS16949 Certificates:

Factory and Equipments: