On January 31, 2011, on the 28th day of the Lunar New Year, Zhengzhou High-tech Zone Party Committee, Chairman of the Trade Union Confederation, and Chairman of the Federation of Industry and Commerce Cui Guanglin led the group responsible for the responsible person and the chairman of the High-tech Zone Industry and Commerce Association (Zhengzhou Yonghe Pharmaceutical Co., Ltd., Zhengzhou Jingmei Health Technology Co., Ltd., Zhengzhou Jinshui Cable Group Co., Ltd., Zhengzhou New Cape Electronics Co., Ltd., Henan Xinhexin Real Estate Co., Ltd., Soling Electric Co., Ltd., Zhengzhou Huajing Diamond Products Co., Ltd., Henan Guangan Biotechnology Co., Ltd. Co., Ltd., Henan Bioengineering Technology Research Center, Henan Yalong Diamond Products Co., Ltd., Henan Brilliant Technology Co., Ltd., Henan Meijing Real Estate Co., Ltd.) visited Shifo and Dang Zhao offices to visit dozens of rural households It was sent to the presidents of the High-tech Zone Federation of Industry and Commerce, the
Spring Festival blessings of entrepreneurs and holiday condolences. Encouraging the entrepreneurs of the high-tech zone to make great contributions to the economic development of the high-tech zone, but also to give great care to the life of rural households in the region. Later, they went to the regional city to send a visit to the Spring Festival, thanking them for their support and help to the enterprises in the region for one year, and to pay the highest respect and blessings for the Spring Festival. The entrepreneurs of Zhengzhou High-tech Zone said that in the new year, they will closely focus on the central goal of building a “high-tech city†in the high-tech zone, make every effort to seek development, innovate and seek for strength, and create a new chapter in the city, and double the social responsibility. Care for vulnerable groups and make greater contributions to the construction of high-tech cities.
Tapping Screw
Although there are many types of tapping screws, they all have the following similarities:
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping Screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.
Round head Tapping screw,hex tapping screw,flat head tapping screw,pan head tapping screw,truss head tapping screw
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