... tempering HB260°~320° Nitrided Hardness HV950°~1000° Nitrided Depth 0.50~0.7mm Nitrided Brittleness above 2 stage Surface Roughness Ra0 ... ,35/75,40/83,45/90-99,48/112-117,50/105-110,51/105-120,55/110-125,58/125 ... ,Super high molecular sheet,1/2 high Calciumbuckle,50-400 high Calcium pipe,50-300 high Calcium Profile,soft PVC sheet,XPS -PVCetc. PP ...