How to identify the stainless steel wire rope (b) but high carbon steel type 420 and 440 points during nitric acid test is slightly affected by corrosion, non-ferrous metals encountered immediately concentrated nitric acid corrosion, and dilute nitric acid having a strong corrosive to carbon steel. The easiest way to spot copper sulfate copper sulfate test point test method is quick to distinguish between ordinary carbon steel and all types of stainless steel wire rope, the concentration of copper sulfate solution used is 5% to 10%, before making spot test, test District should completely remove oily or other impurities, and with sanding or polishing cloth Polishing a small area, and then drops again to polish at ordinary carbon steel or iron within a few seconds the surface will form a layer of copper , but the point is not to produce the test surface of stainless steel or copper precipitate copper color display. Sulfuric acid immersion test method 302 and 304 stainless steel can 316 and 317 separate. Trimming the specimen to be finely ground, then the volume concentration of 20% to 30%, temperature 60 ~ 66 ℃ of sulfuric acid cleaning and passivation half an hour, a trusted manufacturer of stainless steel wire 304, the volume concentration of sulfuric acid solution When 10%, was heated to 71 ℃, 302 and 304 immersed in the solution, and the corrosion of the steel was rapidly produce a large number of bubbles, black samples within a few minutes; and 316 and 317 samples of the steel from corrosion or corrosion very slow (no bubbles), the test does not change color within 10 to 15 minutes. If simultaneously test a sample having a known composition to approximate comparison, the latest offer of 304 stainless steel wire manufacturers, make the test more accurate. Promote the industrial development of stainless steel wire stainless steel wire drawing process as a metal wire products business units with steel strip steel division, the Institute had conducted a series of close and fruitful joint development and research topics, 304 stainless steel wire manufacturers in technology research and development continue to accumulate experience, operational collaboration also continues to achieve a breakthrough. Now, with the establishment of the Joint Research Centre of the new platform, the three units will integrate their superior resources, of common concern products and technologies to expand focus on research, safety and reliability of 304 stainless steel wire manufacturers, wire solve key production and use of new products technical problems, it is also a useful attempt internal company collaboration downstream operations. The establishment of the research center will further develop and strengthen the system benefits and then from raw materials to stainless steel wire rod products, accelerate scientific and technological achievements, promote world-class wire and products bases. Trusted 304 stainless steel wire manufacturers, steel Shengyuan, 304 stainless steel wire manufacturers by Dongguan Shengyuan Stainless. Dongguan Shengyuan Stainless Steel Co. (dg-shengyuan.cn) is Dongguan, a leader in metal packaging machinery, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shengyuan leader in stainless steel with the staff warmly welcome all inquiries negotiations to create a better future Shengyuan stainless steel.