... weight,simple,easy to carry 4.3year warrant PHR portable pipe rockwell hardness tester HZ-2507C Equipment description:The PHR portable ... , greatly reduced prices. To meet the standard: This PHR portable pipe rockwell hardness tester meet GB/T230.2-2004,ASTM E18 ... ,ISO6508-1 Technical parameter:ModelHZ-2507C PHR portable pipe rockwell hardness testerHardness scaleRockwell—A , B , C , D , E , F ...