Haihe Machinery

Diameter: φ15mm – φ500mm
Maximum Length: ≤ 10,000mm

Diameter: Φ15 – Φ350 mm
Maximum Length: ≤ 10,000 mm
Surface Treatment: Nitriding, hardness HV ≥ 900
Nitriding Depth: 0.5 – 0.8 mm
Material: Surface WC/Co full overlay welding, effectively extending screw service life

Features:
High wear resistance and durability
Optimized for pelletizing...

Process: Nitriding & Bimetal
Nitriding Layer Depth: 0.5 – 0.7 mm
Bimetal Screw Hardness: HRC > 60
Nitrided Layer Hardness: HV 960 – 1100
Screw Straightness: 0.015 mm
Chromium-Plated Screws: Chrome layer thickness 0.03 – 0.06 mm
Surface Finish: Ra 0.04 – 0.08 μm
Nitriding Brittleness: ≤ Grade 2
L/D...

The screw is made of high-quality alloy steel, precisely machined, quenched, and nitrided to achieve optimal hardness and corrosion resistance. Specially designed screws are equipped with forced-feed bushings, featuring a well-engineered structure, stable performance, excellent plasticizing, high...