Welcome to Zhoushan Changjia Plastic Machinery Co., Ltd Official website!

简体中文| Add to Favorites|

Focus on the production of high-performance barrelscrew

famous brand in the screw hometown of China

National Service Hotline


Foam Barrel Screw

Screw diameter:Ø20mm-Ø300mm
Aspect ratio:L/D=15~55
Material:38CrMoALA(JIS SACM645)、316 Stainless Steel、SKD61
Birthplace:Zhejiang Province, China (mainland)

☎ We accept all kinds of custom services, welcome calls!
Products Details

Screw diameter:Ø20mm-Ø300mm

Aspect ratio:L/D=15~55
Tempering hardness:HB240°~280°
Nitridation hardness:HV850°~1000°
Nitration case depth:0.45~0.7mm
Nitridation brittleness:≤二级
Surface roughness:Ra0.4
Screw straightness:0.015mm
Chromium coating hardness after nitridation:HV≥900HV
Chromium coating thickness:0.05~0.10mm
Dual alloy depth:0.8~2.0mm
Dual alloy hardness:HRC56°~65°

High-quality steel
①38CrMoALA (JIS SACM645)
②316 stainless steel

Heat treatment:
Nitriding treatment
Hard chrome plating layer
High-frequency quenching
Spray corrosion resistance, wear-resistant bimetallic layer
Vacuum hardening

Customer Service Customer Service