1.Durable material used 2.Abrasion and corrosion resistant 3.On time delivery 4.Technical support

ZHONGYANG offers parallel twin screw and barrel for extruders in full specifications.We can make any design according to customers' requirements.

Material:High quality alloy steel

           1)38CrMoAlA

           2)Nickel based alloy powder

Technics:1)Heat-treatment

              2)Nitriding treatment

              3)Hard-chrome electroplating

              4)Bimetallic-alloy coating spraying

Technical parameter

Nitriding depth:0.50-0.80mm

Chrome depth:0.025-0.085mm

Bimetallic depth:3mm

Nitriding hardness:900-1000HV

Nitriding brittleness:Less than grade 1

Surface roughness:Ra0.4

Linearity of the screw:0.015mm

Hardness of the chromium plating after nitriding:More than 950HV

Chrome plating thickness:0.025-0.085mm

Terms and Conditions:Payment Terms:T/T,L/C or othersPacking: Wooden Case (Export standard)Lead Time: 30 days after receiving the paymentMOQ.:1 PairWarranty: 1 Year