Base material :38crMoAIA A,Special alloy is welded on the flight of screw, prolong life of screw.Easy wearing parts of berrel made from anti alloy can be improved abrasion performance.
1 Material：38crMoAIA，Nitriding treatment，surface hardness HV≥900. Depth of nitration case：0.5-0.8mm
2 Material：38crMoAIA. The surface of the screw edge is welded with dual alloys, which can effectively increase the service life of the screw.
3 Material：38crMoAIA. Imported alloy steel is used for the easy-wear part of the material port. After special treatment, the wear resistance of the barrel can be effectively improved, and the service life is improved.。
Specification：
| Ф35/Ф77 | Ф45/Ф90 | Ф50/Ф105 | Ф55/Ф110 | Ф60/Ф125 | Ф65/Ф120 |
| Ф65/Ф132 | Ф70/Ф140 | Ф75/Ф150 | Ф80/Ф143 | Ф80/Ф156 | Ф92/Ф188 |
