Screw tip set (assembly) consists of screw tip, check ring (non-return valve) and washer. Utilizing the most advanced technology in both design and manufacturing process, we manufacture wide range of different types screw tips to meet the needs of today’s injection molders. Screw tip with tool steel material All three components of the P-700 screw tip are manufactured from H-13 tool steel that is heattreated to the maximum safe Rockwell hardness, based on the valve geometry that will range from 52 to 59. The components are Ion Nitride surface hardened for added wear protection. Nitride provides a case hardness of up to 70 Rockwell with a case depth up to .015” per side. Recommended for use on shear or compression sensitive materials, general purpose materials and “limited run time” fi lled materials. Use on highly fiber filled materials will maintain fiber integrity and result in higher tensile strengths in the molded part; however, faster wear of the valve may be experienced. ---------------------------------------------- Ningbo Jinyi Precision Machinery Co., Ltd. (since 1992) 158 Qiancheng Road, Zhenhai District, Ningbo 315207, China Email: info@jinyiscrew.com www.jinyi-machinery.com www.jinyi-precision.com