Bakelite screw barrel uses special alloy distinction: Injection molding machinery / extrusion machinery / bakelite machinery processing range: diameter Ф20mm-Ф250mm effective length: 8000mm alloy composition: 88wc / 12c0.Crc / 25Nicr.XaloY108 alloy hardness: HRC60 ° -65 ° surface roughness: R0.4 Screw straightness: 0.015mm Scope: Suitable for all types of glass fiber, plastics PPA, PO, PPS, LCP, ABS fireproof, bakelite, magnetic, PC, etc. special engineering plastics. If you like long fingers, how to meet the different needs of users? Jinxin never compared to just break their own people! We have been working hard! Every year, every day, we are making progress! We lead, others follow. Jinxin - to create a new era of Chinese runner. Production falters ------ Select Jinxin try? Give me a trust, but also you very responsibility! National free hotline: 4000-822-881 call us: Miss Wei 133 4296 3865 0755-27188830 NOTE: Because of the different needs of each product, so the product specifications also vary. If interested, call the company directly, the company will have professionals to serve you