Parrel double screw,twin screw barrel
| Type of posting | Offer |
| Category | Other Welding & Soldering Supplies |
| City / Port | Beijing, CN, China |
| Description | twin screw barrel. Parrel double screw Parrel double holes barrel and screw specification PX-Ã65/2Ã80/2Ã90/2Ã105/2 Ã125/2Ã146/2Ã150/2 L/D=18-25 the compression ratio of screw can be designed according to different materials and different products Technology standard matereial:38CrMOALA hardnessHB240°280° nitriding hardnessHV850°1000° nitrding depth0.450.7mm nitrding Brittle≤grade two surface roughness Ra0.4 screwliL inearity 0.015mm chrome plating of surface after nitrding≥900HV chrome plating thickness0.050.10mm bemetalic hardnessHRC56°65°nickel base alloy alloy depth0.82.0mm |
| Date | 2009 Dec 12, 04:12 |