1. Steel: 38CrMoAl (41CrAlMo7), after heat treatment, the steel has good performance in abrasive resistance, corrosive resistance and torque resistance.
2. Screw and barrel can be welded with alloy layer to increase the abrasive resistance.
3. Cr12MoV (SKD11) liner can be pushed into barrel’s inner hole, let barrel has excellent abrasive resistance.
1. Steel: 38CrMoAl (41CrAlMo7), after heat treatment, the steel has good performance in abrasive resistance, corrosive resistance and torque resistance.
2. Screw can be welded with alloy layer to increase the abrasive resistance.
3. Bimetallic barrel can be provided, it can be used in high filler, high temperature, high pressure, abrasive& corrosive working environment.
4. For high filler, high temperature, high pressure, abrasive& corrosive working environment, better steel can be used to produce screw.
