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No | Item | Data |
1 | Material | 38CrMoAlA, 42CrMo(JIS SCM440), SKD11,61 |
2 | Diameter | Φ15mm-350mm |
3 | Application | Suit for cable , sheet , pipe , profile |
4 | Nitride Case Depth | 0.5mm-0.8mm |
5 | Nitride Hardness | 1000-1100HV |
6 | Nitride Brittleness | ≤Grade One |
7 | Surface Roughness | Ra0.4um |
8 | Screw Straightness | 0.015mm |
9 | Alloy Hardness | HRC68-72 |
10 | Designing | Screw structure and compression ratio can be designed according to different products & different output re quirement. |
11 | Technology | 1)Longer time Gas Nitriding treatment 2)Special corrosion & abrasion alloy (bimetallic) 3)Tungsten carbide 4)Cobalt base alloy 5)Stainless steel 6)GH113 nickel based alloy |
12 | Packing | Wrapped up by film in wooden case |
13 | Payment Term | T/T , L/C , WESTERN UNION |
14 | Delivery Term | 25 working days |
15 | Port Departure | Shanghai/Ningbo |
16 | Min. Order | 1 set |
17 | Guarantee | Common Nitrided:2.5-4years Bimetallic: much longer lifetime |

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