HRA Rockwell standard block/standard hardness block

The hardness block (standard block) used for calibration can verify whether the error of the hardness tester during operation is within the range specified in international standards. Each hardness block is engraved with a serial number to ensure its international standard traceability. The hardness standard blocks are made of high-quality materials to ensure the reliability and stability of the hardness values.
Shenzhen Hengxinjie Technology Co., Ltd. sells and wholesales HRA Rockwell standard blocks/standard hardness blocks in large quantities.