screw barrel, Base Material : 38CrMoA1A; Technic: PTA Welding (Ni-Base) Plasma Nitriding;

 

screw and barrel ,screw and barrel for pvc,

According to the customer demands to make screws and barrelsMaterial: Alloy Steel of High Quality1) 38CrMoAlA(JIS SACM 645)2) 42CrMo(AISI 4140)3) Cr12MOV(JIS SKD11)4) 4Cr5MoSiV1(JIS SKD61)

 Kinds:

1.Nomal screw and barrel:

   Nitriding screw and barrel

 

2,Highly wear resistant screws and barrels

  Hardened through screws;

 hard face flight screws: Ni Base  C Base;

 bimetallic barrels:Fe Base  Ni Base

 

3.Highly wear corrosion screws and barrels

 

4.chrome plated screw and barrel