SPECIFICATION Size15 mm300mm Max Length10000mm Nitriding HardnessHV900 Hardness of 0.2mm deep76038CrMoALA Nitride brittleness2 Class Surface roughnessRa0.4µ m Straightness0.015mm Thickness of alloy layer1.5-2mm Alloy hardness:HRC56-60 Thickness of chromium plating layer :0.030.05mm APPLICATION Film blowing/Granulation/Wire & Cable/Sheet & Panel and other single screw extrusion products PVC PE PP ABS TPE and other plastics