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Credibility ,Three: duplex stainless steel pipe in chemical fertilizer industry application of chemical fertilizer industry by domestic 0Cr25Ni6Mo3CuN aging strengthening duplex stainless steel, using the wear and corrosion resistance, for urea plant process pipelines of various specifications of the high pressure stop valve etc., the effect is good. Currently used in urea production of CO2 stripping process and ammonia stripping is the high alloy austenitic stainless steel, and titanium, China has begun to in large scale urea plant of ammonium carbamate pump with high chromium centrifugal duplex stainless steel to replace the urea grade 316L stainless steel. Since the 1980s, the engineering company to develop the aces urea process gas stripper, ammonium carbamate condenser and high pressure decomposition tower and three sets of high voltage equipment are used DP-12 containing trace of tungsten and copper 25Cr-7Ni-3Mo-N steel) and R-500Cr25Ni6.5Mo1.5N duplex stainless steel. The former is used to manufacture gas provided, condensing pipe, pipe decomposition and pipeline transportation,, the latter used for high voltage equipment shell. 2005 the petrochemical industries of stainless steel pipe the annual demand of about 7800t is expected in 2010 will increase to 9600t stainless steel the national code of some 10 years without amendment and revision of national standard must consider the duplex stainless steel nano scale and the revised. Abroad for the total yield 80%2205 grades specially formulated products factory inspection of user acceptance specification, also should consider the introduction and absorption, emptiness of the existing test methods and standards to promote duplex stainless steel production and order. In addition, vigorously develop the duplex stainless steel industrial and commercial potential market (such as the construction industry - structure, bridge, concrete with steel, such as manufacturing industry containers, tanks, chemical transport ship, speedboat, tanker; and if the household facilities - high level water tank, an electric water heater, live real water auto pipe) and developed, probation, promotion developed abroad and suitable for national conditions of our country (lack of nickel and chromium) some new varieties (such as low nickel saving diduplex stainless steel) believe that the promotion of duplex stainless steel has a very broad application prospects.
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.