Diameter

Φ15mm-Φ350mm

Designing

Screw structure and compression

ratio can be designed according

to different products  &different mixtrues.

Materials

38CrMoAlA

(JIS SACM645)

SKD61

Application

pvc wpc profile, plate & sheet

Nitride Case Depth

0.5mm-0.8mm

Technology

1)Longer time Gas Nitriding treatment

2)special anti-wear & abrasion alloy (bimetallic)

3)tungsten carbide

4)cobalt base alloy

5)stainless steel

6)Gh113 nickel based alloy  

Nitride Hardness

950-1020HV

Packing

Wrapped up by film in wooden

Nitride Brittleness

≤Grade One

Payment Term

T/T , L/C

Surface Roughness

Ra0.4um

Delivery Term

25 working days

Screw Straightness

0.015mm

Port Departure

Shanghai/Ningbo

Alloy Hardness

HRC58-62

Min. Order

1 set

Alloy Depth

0.5mm-0.8mm

Common Nitrided:1years

Bimetallic: much longer lifetime.

Guarantee