D4D Bulldozer Excavator Chain Sprocket Wheel 4V4107 for Surface Hardness HRC52-58

 Standard exported wooden pallet

 Fumigate seaworthy packing 

 1.Castings processing must produce according to requirements and drawings

 2.The workpiece is annealed to eliminate internal stress , the surface sand should be clean .Tooth tooth relative to the standard , the error should be controlled within 5 range .

 3.The modulation of heat treatment hrc30-36 , surface frequency quenching , tempering thesurface hardness of hrc48-hrc54 , hardened layer 5-9mm , core hardness of HRC28 ormore , hardened layer microstructureRequired to achieve the m4-6 stages .

 4.The mechanical tensile strength & N / mm2 > 620 , yield strength & N / mm2 > 375.

 1. Professional Engineers

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 4. Shipping

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 5. About the Quality

We can offer the material report and test report. If the product was broken in quality guarantee period, we can ship new one to you.