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High quality pins for you !

* : * : allpower88 * : 2022-06-29 * : 185

With  material:40Cr or 42CRMo,  Allpower machinery does real quenching  process to ensure core hardness with at least HRC20 or up and  Surface hardness with HRC56-60.  Besides,medium  frequency heat treatment instead of high-frequency to ensure the  thickness of hardness more than 1.8mm. The  Excellent surface plating, including hard Chrome plate can be  chosen. Those assure the enough inside  hardness and outside wearlessness.