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1.38Crmoal material, nitriding treatment, nitriding thickness 0.5-0.8mm.
2. The feed inlet is inlaid with special wear-resistant alloy, which has a long service life.
3. The barrel thickness is 25mm.
4. Nitriding hardness: 950-1024HV.
5. Screw straightness 0.015mm.
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