we manufacture in the following variants:
- nitrided screws
- hardened screws (CPM)
- armoured screws EXTRA
- armoured screws EXTREM
we manufacture in the following variants:
NITRIDED screws – suitable for extrusion of clean materials
Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 6000 | 0.5 ÷ 0.6 | - | 950 ± 80 HV |
HARDENED screws (CPM) – the maximum possible screw quality
Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 3500 | - | Hardened throughout the whole cross-section | 58 ÷ 61 HRC |
ARMOURED screws EXTRA
Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
20 ÷ 750 | 6000 | - | 1.5¸ 2 | 50 ÷ 55 HRC |
ARMOURED screws EXTREM, armoured layer contains tungsten carbide grains of high hardness up to 2400 HV.
Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
40 ÷ 750 | 6000 | - | 1.5 ¸ 2 | 56 ÷ 60 HRC |