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80/156 High wear and corrosion resistance SKD insert conical twin barrel screw manufacturers China
80/156 High wear and corrosion resistance SKD insert conical twin barrel screw manufacturers China
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- screw cylinder material : 38CrMoAIA, SKD,DC53
- 2 sections cylinder alloy length : 1100mm
- screw alloy length : 1120mm
- screw cylinder alloy depth : 0.8-2.0mm
- hardness after adjustment : HB260-290
- nitrided depth : 0.5-0.7mm
- surface hardness after adjustment : HV940-1050
- screw straightness : 0.015mm
- cylinder straightness : 0.05mm
- cylinder concentricity : Above 90%
- cylinder centrad : 0.05mm
- cylinder divided into : whole and two sections
- screw divided into : 7 sections 8 heads, 7 sections 6 heads, 6 sections 6 heads.
- applications : Make PVC skin foam board, PVC wood plastic foam board, PVC free foam board, PVC hard panel.
