1.ASTM80-55-06 2.Sand casting 3.Cut inner spline 4.Machined by CNC,Inspected by CMM 5.Roughness:Ra1.0,Smooth Oem ductile iron Disc used for industrial clutch and brake,These part made with sand casting , Machined by CNC, Machining center,all the parts inspected by CMM, Surface quality: Ra1.0,smooth, inner spline,Dia is 430mm, Lengh is 44.5. Our company located in Dalian, the most important port ...