Tungsten steel screw base made of high quality steel products (38CrMOALA) ??or chromium-molybdenum alloy steel black cross (SACM645), cylinder bore centrifugal casting, nickel-based alloy substrate selection (Ni60), unilateral thickness of about 2.5-3mm, screw tungsten carbide surface coating, unilateral approximately 1.5-2mm. Technical indicators for production use: Injection molding machinery / Bakelite machinery / extrusion machinery / blowing machinery / blown film machinery / granulator machinery / extrusion machinery / Pipe Machinery / sheet machinery / wire and cable Processing range: diameter Ф20mm-Ф250mm effective length: 8000mm alloy composition: 88wc / 12c0.Crc / 25Nicr.XaloY108 nitriding hardness: HRC58 ° -62 ° alloy hardness: HRC60 ° -65 ° applicable Plastic: Suitable for all kinds of glass add special plastic fibers, plastics and PPA, PO, PPS, LCP, ABS fireproof, bakelite, magnetic, PC, etc. as long as if 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. ------ Select Jinxin production falters try? Give me a trust, but also you are very responsibility! NOTE: Because the different needs of each product, so the product specifications vary as those interested can call directly to my company, the company will have professionals to serve you.