High quality pins for you !
* : * : allpower88 * : 2022-06-29 * : 218
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.
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