Zhoushan Jianghai Screws Manufacture Co., Ltd

We are offering injection molding machine, screw barrel etc.material38 crmoa1adiameter12-300mmld ratiold=10-56nitriding layer depth0.5-0.8mmnitriding fragilityless than grade twonitriding layer hardnesshv900surface roughnessra0.4mcr-plating layer depth0.03-0.08mmcr-plating layer hardness850 hv material: the surface tungsten carbide ultra-sound overall spray can improve the wear resistance of the screwheat-treatment: vacuum hardening heat treatment process can greatly improve the service life of the three small pieces.While emphasize the development and retainment of high performers, we introduce a series of modern facility and continuously improve our quality control system.adhering to the customer service philosophy, we keep exceeding customers' expectation as our pursuit.