Large construction machinery, Crane, Mining/Petroleum power Special Characteristics For valve blank, Using shot blasting process after quenched-tempered, not only eliminates surface stress, but also improve fatigue resistance. Machinery intake valve for Caterpillar Technical parameter: ModelDescriptionPart numberMaterialSize(ã??)SurfaceCharacteristicApplicationPower-kwGuarantee DΦX°d ΦL C13INTAKE224302821-4N+4Cr9Si244.560°9.5188.3chromingstrengthenLarge construction  machinery,Crane, Mining/Petroleum  power287~388100 000 km or 1 year EXHAUST 224303021-4N+4Cr9Si241.445°9.5187.4chromingvalve seat welding Engine valve is the executive part of engine timing control of internal combustion engine, and it is the important parts which guarantee power performance, economic performance, reliability and durability of engine. Our Products Strength: 1. High quality special valve bar material: 4Cr9Si2, 4Cr10Si2Mo, 21-4N, X60, X80, INCONEL751,21-4NWNb. 2. Strict control process: CNC processing line, network continuous furnace for heat treatment,welding of double matels, valve seat welding(STELI), U type quenching, chrome plating and soft nitriding on valve surface, 100% flaw detection for finish products. 3. Quality certificate: ISO9001, IATF16949 4. Fast delivery capability: for batch order, within 30 days 5. Perfect service system: professional engineer for solving variours problem in use. FAQ: What is your terms of delivery? FOB, CIF, C&F, etc. we are proessional Diesel intake valve Manufacturerï¼?Huacheng Automobile Accessories dedicated to produce Internal Combustion Engine Parts, Valve System, Piston, Timing Control, Timing Gear.