Grade B DAC full-hardened screw
USD $100 - $10,000 /Set
Min.Order:1 Set
Zhoushan Qunying Plastic Machinery Manufactory
Processing technology:the base material is tempered,forged,processed and vacuum quenched till the whole hardness reaches HRC60-62 degree and return to HRC50-52,then become HRC60-62 by nitriding treatment.Depth of surface nitration is 0.7-0.8mm.
We established quality control system strictlyas ISO 9001:2008 International Quality System.In addition,we got SGS certificate.Every product wil be very extremely inspected before ex-factory.
We have completed project execution procedures, professional design team,experienced workers.We can make any types of screw/barrel as per customer request.