Valve train system related parts of DPS consist of Engine Valve, Valve seat , valve guide. Through our joint venture factory, Now DPS are the only few manufacturers in China which able to supply engine valve and powder metallurgy seat together.
We are capable to produce 15 million pieces valve seat and 20 million pieces of engine valve annually. Now, our products are supplying to many famous engine factories in domestic and international market.
Product Description for Valve Train System
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Technical Specification
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| Material |
Austenitic and Martensitic steel |
| Manufacturing process |
Upset forging
Friction welding
Heat treatment
Stellite depositing
Machining grinding
Finishing |
| Manufacturing structure |
Mono-metal; Bimetal( tip-wafer and mid-welding); Tri-metal |
| Head diameter |
20 mm - 100 mm |
| Stem diameter |
4 mm - 20 mm |
| Total length |
30 mm - 300 mm |
| Technology |
Hard chrome plated; Salt bath nitrided; seat & tip stellited |
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Friction welding; swirl polish; sliver shot blast |
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Moulding grinding; Seat hardfacing stress relief |
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Commercial specification
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| Product range |
more than 10000 types valves cover most of engine |
| Development |
20 days according to samples / drawings |