The classification of the valve mainly points according to the purpose and structure characteristics. But usually we use the general classification according to the principle, function and the division of the structure, this method is the present domestic and international the most common method of classification. Here we according to the body of the material is different, the valve can be divided into: ( 1) Metal material valve: the valve body and other parts made of metal materials. Such as cast iron, carbon steel, alloy steel valves, valve of copper alloy, aluminum alloy valves, lead alloy, titanium alloy valve and monel valve, etc. ( 2) Nonmetallic material valve: the valve body and other parts made of nonmetal materials. Such as plastic valve, ceramic valve, valve, glass fiber reinforced plastic valve, etc. ( 3) Metal body lining valve: the valve body for metal appearance, internal lining of every contact with the medium are the major surface, such as rubber lining, lining plastic valves, ceramic Industrial Valves, etc. Body material basically has: carbon steel, C I1Cr5Mo chrome molybdenum steel, HCr13 is stainless steel, malleable iron K, L, aluminum alloy, P0Cr18Ni9 is stainless steel, PL00Cr19Ni10 is stainless steel, Q nodular cast iron, R0Cr12Ni12Mo2 is stainless steel, RL00Cr17Ni14Mo2 is stainless steel, S plastic, T copper and copper alloys, Ti titanium and titanium alloy, V molybdenum chrome vanadium steel, Z gray cast iron. The following parameters for several kinds of stainless steel valve materials and concrete application: material code application for short in Chinese media WCB steel without corrosive working temperature range, including water, oil and gas temperature range: - 30 ℃ ~ 425 ℃ LCB carbon steel - at low temperature Low temperature applications, low - temperature 46 ℃, cannot be used in occasions LC33 temperature higher than 340 ℃. - 5% nickel steel Low temperature applications, low - temperature 101 ℃, can not be used for occasion WC61 temperature higher than 340 ℃. 0 25% chromium. 5% molybdenum steel no corrosive applications, including water, oil and gas temperature range: - 30 ℃ to 593 ℃ WC92. 25% chrome non-corrosive applications, including water, oil and gas temperature range: - 30 ℃ to 593 ℃ chrome C55%0. 5% molybdenum mildly corrosive or aggressive and non-corrosive application temperature range: - 30 ℃ to 649 ℃ C129%1% chromium molybdenum mildly corrosive or aggressive and non-corrosive application temperature range: - 30 ℃ to 649 ℃ CA6NM12 % chromium steel corrosive temperature range: - 30 ℃ to 482 ℃ CA1512 % chromium corrosive application temperature range as high as 704 ℃ CF8M316 stainless steel corrosion resistance or ultra-low temperature or high temperature corrosive application temperature range: - 268 ℃ to 649 ℃, the temperature is above 425 ℃ to specify the carbon content is 0. 04% and above CF8C347 stainless steel is mainly used for high temperature, corrosive application temperature range: - 268 ℃ to 649 ℃, the temperature is above 540 ℃ to specify the carbon content is 0. 04% or more CF8304 stainless steel corrosion resistance or ultra-low temperature or high temperature corrosive application temperature range: - 268 ℃ to 649 ℃, the temperature is above 425 ℃ to specify the carbon content is 0. 04% or more CF3304L stainless steel corrosion or non-corrosive application temperature range as high as 425 ℃ CF3M316L stainless steel corrosion or non-corrosive application temperature range as high as 454 ℃ CN7M alloy steel has good thermal sulfuric acid corrosion resistance temperature as high as 425 ℃ M35 - 1 monel weldability, has the very good all common organic acids and salt water corrosion resistance, also has the very high to sustain most alkaline solution corrosion performance of the temperature as high as 400 ℃ N7M hastert B special nickel alloy used in various concentration and temperature of hydrofluoric acid, the processor has the very good of sulfuric acid and phosphoric acid corrosion resistance temperature as high as 649 ℃ CW6M hastert nickel alloy C has good resistance to strong oxidation environment corrosion performance, has good characteristics at high temperatures, the formic acid ( Formic acid) , phosphoric acid, sulfurous acid and sulfuric acid with high corrosion resistance temperature as high as 649 ℃ CY40 for secco nickel alloy did very well in high temperature applications, strong corrosive fluid has good corrosion resistance in this paper, the key word search: more valve products
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