Flim Blowing Extruder Screw

Specifications

Technical parameters:

Tempering hardness:HB240-280

Nitirding hardness:HV850-100

Depth of nitriding case:0.5-0.8mm

Nitriding brittleness:grade 1

Surface roughness:Ra 0.4

Screw straightness:0.015mm

Hardness of surface chromium coating after nitriding:>900HV

Thickness of chromium coating:0.015mm

Bimetallic hardness: HRC56-68

Bimetallic depth:1.5-4mm

Generally information:

Screw diameter:Φ15mm-Φ360mm     L/D=15-56

Length of screw and cylinder:8000mm

PACKING:  Film wrapped in wooden case without fumigation (export standard )

Guarantee time:one year under normal using  

Payment:30% deposite in advance,70% balance before shipment

Our Qunying company is the leader screw and barrel manufacturer in China,we have been in this industry for more than 15 years.we are good at making most types of Extruder Screws/barrels, Injection Molding Screws/barrels, Twin Screws and Rubber Screws used in the plastic and rubber industry.

We established quality control system strictlyas ISO 9001:2008 International Quality System.In addition,we got SGS certificate.Every product wil be very extremely  inspected before ex-factory.

We have completed project execution procedures, professional design team,experienced workers.We can make any types of screw/barrel as per customer request.