Products: high duty power metal automobile engine valve guide by precision machining
Description: it's a key components in automobile engines, valve guide used with valve stem, made by high
   duty powder metallurgy,processed precision machining,no burrs inside.
Material:powder metallurgy
Process: lathe turning and grinding
Heat treatment: without
Application: they are widely used in automobile engines.
Tolerance:    it depends on drawing requirements, the highest tolerance we're doing is 0.005mm.
Quality control flow: material in, inspection,lable and record;
                                     mateiral storage and distribution, lable and record;
                                     process and supervise according to Control Plan at operation spot;
                                     randem quality inspection by QC
                                     quality inspection in quality department before putting in warehouse
If required, we also have the alibity to do the CPK anylizing

Packing:    engine valve guide/carton/wood pallet
Lead time: 20days for initial samples or prototype
                     30-40days for first regular purchasing order
                     20days from the second orders