... 1.Non Sparking Tool hearing needles. 2.Size:300-600mm 3.Hand Tools,safety tools 4.Corrision resistant 5.ISO9001&UKAS ... warehouse3.Surface treatment 1) Electrostatic spraying 2) Natural color 3) Passivation4.Specs 300mm,400mm,500mm,600,700mm,800mm,900m,1000mm ... in medical apparatus and instruments, food industry ect. 3) Weakness: Low strength, low hardness. HRC<10°Terrace Measuring Tools.1. Machinery ...