1.OEM Service Blanking Copper Alloy Nuts 2.Apply:machine parts 3.surface roughness:Ra0.8-Ra6.3 4 ... Technic:die casting Surface Treatment: electroplate Equipment:die casting machine Weight:0.005kg-10kg Surface Color:as customer's ... strength tester, Hardness tester, Roughness tester, deflection tester, Impact test machine, Projector, Altimeter, Scale Micrometer, pressure tester, etc.DeliverySample sent ...