Stainless steel surface accumulating the attachments contain other metal elements or heterogeneous metal dust particles, in the humid air, condensate and stainless steel fixtures between the two together into a micro-cell, causing the electrochemical reaction, protection membrane is damaged, call it that electrochemical corrosion. 2. Stainless steel surface adhesion of organic juice (such as vegetables, soup, sputum, etc.) stainless steel tube, in the case of water oxygen to form organic acids, organic acids for a long time the corrosion of metal surfaces. 3. Stainless steel surface adhesion containing acid, alkali, salts (such as wall decoration alkaline, lime splash), causing localized corrosion. 4. air pollution (such as with a lot of sulfides, carbon monoxide, nitrogen oxide atmosphere), the case of condensed water to form sulfuric acid, nitric acid, acetic acid solution point, causing chemical corrosion. Above can be caused by damage to the stainless steel surface protection film surface stainless steel plate if there is debris, especially on organic matter or gray attachment piece, the heating will certainly have an impact scale. Differences stainless steel plate of the furnace atmosphere in the furnace atmosphere locally different, oxide scale formed will have a change, which is caused by uneven pickled reasons. Therefore, when heated stainless steel pipe, the various parts of the furnace atmosphere must be the same. To do this, you must also consider the atmosphere of the cycle. There are stainless steel pipe, constituting the heating of the workpiece gantry used bricks, asbestos and other thin-walled stainless steel tube, if it contains water, when heated, the water should evaporate, direct contact with a portion of water vapor from other parts of the atmosphere will be a difference, the formation of scale, of course, is different. Therefore, the object in direct contact with the heating of the workpiece, must be fully dried before use. However, after drying at room temperature as placed under high humidity conditions, water will condense on the surface of the workpiece. Therefore, it is preferable to use the total heat transfer coefficient in the case of addition before drying depends on the thermal conductivity of the metal, but also depends on other factors. In most cases, the film heat transfer coefficient or rust and surface condition of the metal. Stainless steel can keep the surface clean, so it is better than the thermal conductivity of the higher thermal conductivity of other metals. Liaocheng Suntory provide eight stainless steel, stainless steel plate excellent technical standard stainless steel plate corrosion resistance, bending workability and toughness of welded portion, and punching workability of weld high-strength stainless steel plate and its manufacturing method. Specifically is to contain C: 0.02% or less, N: 0.02% or less, Cr: more than 11% but less than 17%, an appropriate content of Si, Mn, P, S, Al, Ni, and satisfies 12≤Cr Mo 1.5Si≤ 17,1≤Ni 30 (CN) 0.5 (Mn Cu) ≤4, Cr 0.5 (Ni Cu) 3.3Mo≥16.0,0.006≤CN≤0.030 stainless steel plate heated to 850 ~ 1250 ℃, then subjected to 1 ℃ / s The cooling rate of the above heat treatment. Such organizations can become more than 12% volume fraction of martensite, 730MPa above high strength, corrosion resistance and bending properties, HAZ toughness of high-strength stainless steel plate. Reuse containing Mo, B, etc., can significantly improve the punching workability weld. Plus oxygen gas flame can not cut stainless steel because stainless steel is less susceptible to oxidation. Stainless steel tube, Billion Po-commerce (certified), stainless steel pipe provided by the Tianjin Dongli Bao Jie Shengda Trading Company. Bao Jie Tianjin Shengda Trading Company (www.sdbjsm.com) is Tianjin, hardware leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shengda Po-commerce leader in the staff warmly welcome all inquiries negotiations to create Shengda Po-commerce a better future.