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Screw Of Rubber Machine - China

price: contact company for price

Product Specification and technical data
inner Diameter:Ø45-Ø300
L/D=8~20
Hardness of quenching and tempering:HB240°~280°
Hardness of nitration:HV850°~1000°
Depth of Nitrated Layer:0.45~0.7mm
Fragility of nitration:≤ Grade 2
Surface roughness:Ra0.4
straightness:0.015mm
Hardness of Cr-coating Layer:HV≥900HV
Nitrided layer thickness:0.05~0.10mm
Thickness of Cr-coated Layer:0.8~2.0mm
Hardness of bimetallic:HRC56°~65°(Ni-based alloy)

Material :quality alloy steel
① 38CrMoALA(JIS SACM645)
② 42CMo(JIS SCM440)
③ 9Cr18MoV
④ CW6Mo5Cr4V2
Heat-treatment:
Nitriding treatment
Electroplated hard-chrome finish
High-frequency quenching
Spray coating Bimetallic-alloy
vacuum quenching


Company Contact:


  • Phone: +8657489075950

  • Address: NO.16 XINGHAI SOUTH RD, HI-TECH ZONE, Ningbo, Zhejiang, China

  • Email: Email


Published date: August 11, 2016 -

  • Business Description: Ningbo Superior Machinery Co.,Ltd was founded in 1992,which is one of the earliest manufacturers of screw and barrel for plastic processing machine in China. We are aiming at serving small-scale corporations during our early business period and we have served more than 1000 small or middle-scale corporations producing various kinds of plastic products so far. This fact has lead to an extensive accumulation of technological”know how”and experience for us.

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