... : SACM-645, SCM440, 38CrMoALA 2.Injection capacity:30g-25000 concial twin screw barrel Injection capacity:30g-25000g TECHNICAL DATA 1.Depth of ... °) 3.Roughness of the surface:Ra 0.4μm 4.Screw straightness: 0.015mm/m 5.Chrome plating thickness: 0.05 ... -0.1mm 6.Fully hard screw(wear-proof, corrosion-proof, heatproof, high-pressure proof and high ...