1)Diameter 200 barrel; 2)Hardness After Hardending&Tempering : HB240~280 3)Nitrided Hardness : HV950~1000

1 Technical Specification

2 Hardness After Hardending&Tempering : HB240~280

3 Nitrided Hardness : HV950~1000

4 Nitrided Case Depth : 0.55~0.7mm

5 Nitrided Brittleness :Less Than Grade 1

6 Surface Roughness :Ra 0.4

7 Screw Straightness :0.015mm

8 Surface Chromium-Plating’s Hardness After  Nitriding≥900HB

9 Chromium –plating Depth :0.05~0.10mm

10 Alloy Hardness : HRC55~62

11Alloy Depth :1.5~2.0mm

12 Material&Processes

13 Quality 38CrMoALA

14 Qulity Duplex Stainless Steels

15 GH3#Steel

16 Quality Powder Metallurgy Raw Materials

17 Cold/Thermal Spray Hard Metal Process

18 Advanced nitriding Process

19 Corrosion & Abrasion Resistance Bimetal Spraying Process

20 Horniness screw (HTP1:abrasion HTP2:corrosion resistance,HTP3:abrasion and corrosion resistance) 

Diameter 200 barrel