The Sino-German Stone Association Cooperation and Exchange Fair was held yesterday at the Western Union International Stone Market Conference Hall. Chairman of China Stone Association Zou Chuansheng, Deputy Secretary-General Deng Huiqing, Tan Jinhua, Executive Deputy Director of China Stone Association Mining Resources Committee Lin Yuhua, General Manager of Beijing Xilian International Stone Market Li Shaowen, Chairman of the German Federal Stone Processing Enterprise Economic Association, Executive Chairman and Sino-German Entrepreneurs from both sides attended the meeting, and the two sides held effective talks on whether they had the opportunity to cooperate and other topics.
The responsible persons of the two parties introduced the situation of stone associations in various countries and the basic situation of the stone industry. In the exchange, German entrepreneurs are more concerned about how their products can be understood by Chinese friends. Zou Chuansheng, president of the China Stone Association, explained that he can participate in the stone exhibition held in China, the annual Shanghai and Xiamen International Stone Exhibition; Xilian International Stone Market will display your new products like the model room. You can also use our Stone Association to make product promotion meetings for you, find stone construction units and design units to make product introductions; The window and the "Stone" magazine for publicity; can also establish a private connection with the entrepreneurs present. If the appeal is adopted, it is the success of our meeting.
The executive chairman of the German Federal Stone Processing Enterprise Economic Association said at the meeting that the Sino-German stone industry will have a good communication platform through the role of the association. Most German companies are engaged in cobblestones, limestone, sandstone, tombstones, etc. To enable German products to cooperate with Chinese companies, we hope that Chinese companies can process their blocks and hope that the Chinese market can directly accept finished products produced in Germany for better cooperation.
President Zou finally said that the intense and in-depth exchanges indicated that both sides have the desire to communicate and the requirements in this regard. This has given the two associations the task and strengthened the relationship to provide a better communication platform for both enterprises. It is suggested that Germany will come to China as a starting point and the two associations will establish a cooperation mechanism to prepare for the second exchange meeting. Germany has good experience in environmental protection and safe production. These experiences are needed for China to pursue scientific development. The focus of Chinese stone is to decorate stone. It is hoped that the second exchange will focus on these themes, and both parties will be fully prepared in advance. The results are better than the first time.
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.
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