intake valve for car(ISO 9001)

Company Information Shijiazhuang HongFa internal combustion engine Fittings Factory founded in 1990 and after development and growth in the past  years, we have become one of the most influential factory which have many agency in many cities of China.With over 500 employees  and 50 various engineering technicians, we are specialized in one varieties of engine valve(inlet&exhaust valves) with modern enterprise system. 
Our engine valves are suitable for  TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD,FIAT,HILLMAN,HINO,HONDA,HYUNDAI, ISUZU,KAWASKI,KIA,LADA,LEYLAND,LISTER,MAZDA.BENZ,MITSUBISHI,NISSAN,OPEL,PAYKAN,PERKINS,PEUGEOT,ROVER, SUBARU,SUZUKI,VOLVO,VOLKSWAGEN ,PLANE AND MARINE AND SO ON. 
  Product Description Generally Raw Material: Intake valve: 4Cr9Si2 Exhaust valve: 21-4N, 21-4N+4Cr9Si2, also customized.  Material Especially for Marine valve spidles: 1. Si-Cr (4Cr10Si2Mo) 2. Ni-Cr-Mn-N (23-8N) 3. Ni-Cr-W (SNCRW) 4. NI (NI80A) Harden process for valve seats' surface: 1. High frequency quenching 2. High alloy welding Harden process for valve stem: 1. Chrome-plating 2.Nitriding 3.Quenching/Spray welding  Simple dimension arrange of our valves: d: 10-100mm D: 45-500mm L: 120-1787mm  Advantages: High Attrition and Temperature Endurance High Erosion and Concussion Endurance Good hardness, wear       Packaging   Certifications    Quality Control