Accessories of screw and barrel
Negotiable /Pole
Min.Order:100 Poles
Ningbo City Roadbridge Sanhan Tools Manufacture Co.,Ltd.
Material of screw and barrel: Alloy-steel of High -Quality
1)38CrMoAlA (JIS SACM645)
2)42CrMo(AISI 4140)
3)Cr12MoV(JIS SKD-11)
4)4Cr5mOSiVI(JIS sKD-61)
50CCrWMoV(JIS HPT-2)
6)9Gr18MoV
Features of screw and barrel:
Heat-treatment
Nitrding treament
Electroplated hard-chrome finish
high-frequency quenching
Spray coating Bimetallic-alloy