Depth of Nitrated Layer: 0.5-0.8mm             Hardness of nitration: 900-1020Hv Fragility of nitration: Less than grade 1       Surface roughness: Ra 0.4um  Hardness of Cr-coating Layer: ≥950Hv      ...

There is an armouring layer on the top of screw thread, or on the surface of all over the screw working surface. It has a minimum contact wear ratio then it is running on the inside of cylinder. The base material is one kind of high-strength and weldable, nitridable metal. Between this armouring layer and the base material, there is perfect...

Depth of Nitrated Layer: 0.5-0.8mm             Hardness of nitration: 900-1020Hv Fragility of nitration: Less than grade 1       Surface roughness: Ra 0.4um  Hardness of Cr-coating Layer: ≥950Hv      ...

There is an armouring layer on the top of screw thread, or on the surface of all over the screw working surface. It has a minimum contact wear ratio then it is running on the inside of cylinder. The base material is one kind of high-strength and weldable, nitridable metal. Between this armouring layer and the base material, there is perfect...

Depth of Nitrated Layer: 0.5-0.8mm             Hardness of nitration: 900-1020Hv Fragility of nitration: Less than grade 1        Surface roughness: Ra 0.4um  Hardness of Bimetallic Layer: HRC55-72       Depth of...

There is an armouring layer on the top of screw thread, or on the surface of all over the screw working surface. It has a minimum contact wear ratio then it is running on the inside of cylinder. The base material is one kind of high-strength and weldable, nitridable metal. Between this armouring layer and the base material, there is perfect...