Top Suppliers Pvc Glazed Tile Extrusion Line Roofing Sheet Making Machine - Screw and barrel for extruder – Jwell

1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(JIS SCM440)

1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(JIS SCM440)

Heat-treatment
Nitriding treatment
Electroplated hard-chrome finish
High frequency quenching
Spray bimetallic coating
Vacuum quenching