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conical twin screw and barrel
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Model: 45/90~105/216
Unit price: Negotiable
MOQ: Negotiable
Quantity: Negotiable
Delivery date: Since the payment date Days delivery
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Details

Material: High quality 38CrMoAl(JIS SACM645) 

Hardness after hardening and tempering: HB280-320

Nitrided Hardness:HV850-1000

Nitrided case depth:0.50-0.80mm

Nitrided brittleness:less than grade 2

Surface roughness:Ra 0.4

Screw straightness:0.015mm

Surface chromium-plating's hardness after nitriding:≥900HV

Chromium-plating depth:0.025~0.10mm

Alloy Hardness:HRC50-65

Alloy depth:0.8~2.0mm


conical twin screw and barrel
 
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