Diameter: Φ20 – Φ300 mm
L/D Ratio: 1:18 – 1:55
Material: High-quality 38CrMoAlA nitriding steel, nitriding hardness HV 850 – 1000, nitriding layer depth 0.5 – 0.7 mm.
Optional Bimetal: Can be selected per customer requirements, alloy layer depth 1 – 2 mm, hardness HRC 56 – 65.

Application field：

Widely used in plastic extrusion processes, including:

Blown film

Cast film

Monofilament / Fiber

Blow molding

Spinneret extrusion

Pipes & Tubes

Sheets / Films