国产精品IGAO视频网网址,亚洲人午夜射精精品日韩,久久久无码精品亚洲日韩按摩,又爽又黄无遮拦成人网站,精品熟女日韩中文十区,国产精品成人高潮av,日韩精品国产精品国产,开心久久婷婷综合中文字幕,欧美精品亚洲精品日韩专区一乛方,欧美人与性囗牲恔配

This paper describes the reason why the galvanized steel wire is replaced by the phosphatized steel wire for optical cable, expounds the production process of the phosphatized steel wire for strengthening optical cable, gives the process parameters of the surface phosphating treatment, and compares the phosphated steel wire produced by the enterprise with the imported phosphatized steel wire and the phosphated steel wire produced by the joint venture in terms of specification and deviation, surface quality and mechanical properties, The results show that the phosphatized steel wire produced by our company has reached the level of the same kind of foreign products and can replace the imported ones.

The biggest characteristic of the cable wire drawing process is slow speed, low output and low strength. Generally, the cable wire has I-shaped wheel take-up of the cable wire, because the manufacturing process of the cable requires the same number of meters per two trays. The wire strength of optical cable is generally about 1770N / mm2. Galvanized carbon steel wire for domestic optical cable is generally electroplated, and the zinc layer is about 15g.

The market analysis and forecast of phosphating steel wire for optical cable are carried out comprehensively and deeply. Investigate and forecast the supply and demand situation and sales price of the proposed project products in domestic and international markets; study the target market of the products and analyze the market share; study and determine the market, mainly the advantages and disadvantages of the product competitors and their own competitiveness, as well as the marketing strategies of the products, and study and determine the main market risks and risk degree and effective ways to avoid them.