Ruian Ruipai Machinery Co.,Ltd. is one of the leading China Screw barrel for film extruder manufacturers, welcome to buy cheap Screw barrel for film extruder from our factory.

1.screw dia: 65mm,ratio:28:1, length: 1820mm,

2.Material Element Analysis: 

  C: 0.35~0.42 Si: 0.20~0.45 Mn: 0.30~0.60 S: ≤0.035 P: ≤0.035 

  Cr:1.35~1.65 Al: 0.70~1.10 Ni: ≤0.030 Cu: ≤0.030 Mo:0.15~0.25

2.Hardness of tempering: HB260-290

3.Depth of nitriding: 0.4-0.7mm

4.Hardness of surface: HV900-1050

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