Name: double-alloy screw and barrel
Specification:  φ 15-   φ  300   L/D: 15-45 

Material:  High quality38CrMoALA or 9Cr18MoV

Technical Index

 

Nitrogen deepness: 0.5-0.8mm
Nitrogen hardness: HV900-1000

Alloy layer deepness: 1.2-2.0mm

Alloy layer hardness: HRC50-65
Surface layer hardness: HV900-1000
Advanced nitrogen process, with alloy sprayin to anti-friction and anti-corrosion
 

         Zhoushan Sitong Plastic Machinery Co., Ltd located in Zhoushan, which has always enjoyed the reputation of being a “ hometown of screw, is an early domestic company that professional in the production of precision screw and sol tube in large-scale.

         Our company specializes in making high temperature barrel & screw, wear-resisting barrel & screw and conventional barrel & screw, etc. Products are made of high quality alloy steel (38CrMoALA) and characterized with wear-resistance through fine workmanship such as the tempering qualitative, surface nitriding and polishing, which are the ideal matching products for injection molding machine, extruder, rubber machinery manufacturer and so on.