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Equal tee in different fields widely used and the promotion, in different industries show good product performance and advantage, play an important role. Equal tee appearance is smooth, have good aesthetic feeling and simple sense, let users in the use of good feeling, won’t produce the feeling of disgust. Equal tee with different materials, production of different specifications and models, according to the different standards for production, ensure that produce adapted to different industries and jobs of equal tee. Material: made of stainless steel (304, 304, 316, 316 l, 321 l) is made and be become, 20 #, 16 mn, Q235, A106, need to add some special raw material in the processing, ensure the production of equal tee has good performance. Size: DN15-48 “) Wall thickness: SCH5 – SCH160 Production range: DN15mm – 820 – mm pressure PN0.25-250 mpa Execution standard: in accordance with ANSI, JIS, DIN, GB, SHJ, HGJ, such as standard, and can according to customer demand for design and production, to achieve the user’s satisfaction. Areas of application: equal tee is widely used in petroleum, chemical industry, nuclear power station, food manufacturing, construction, shipbuilding, papermaking, pharmaceutical and other industries, in different industries have different use, show the use value in the industry. USES: water, beverages, beer, food, petrochemical, nuclear power, chemical fertilizer, shipbuilding, machinery, medical equipment, waterproof processing, pipeline, etc. Equal tee using range is very wide, also many application areas and industries, in different areas show different value and function. Equal tee has good advantages and performance, has the acid and alkali resistant and corrosion resistance, can be used in the acid and alkali serious industry, won’t produce damage and corrosion resistance, so the application will be more extensive.

Carbon steel elbow is pided according to its radius of curvature, which can be pided into long radius elbow and short radius elbow. Long radius elbow refers to its radius of curvature is equal to 1.5 times the diameter of the tube, that is, R = 1.5D. Short radius elbow means that the radius of curvature is equal to the outer diameter of the pipe, that is, R = 1.0D. (D is the diameter of the elbow, R is the radius of curvature) if pided by the pressure rating to about 17 species, and American Standard pipe is the same: sch5s, sch10s, sch10, sch20, sch30, sch40s, STD, sch40, sch60, sch80s, XS; sch80, sch100, sch120, sch140, sch160, XXS, which is the most commonly used is two kinds of STD and XS. According to the angle of the elbow, 45 degree elbow, 90 degree elbow and 180. Carbon steel elbow of the basic process is: first welding a cross-sectional polygon polygon ring shell or closed at both ends of the multiple edges of fan-shaped shells, interior flushes the full pressure medium, subjected to internal pressure, internal pressure under the effect of cross section by the polygon gradually became round, eventually becoming a circular ring shells. According to the need, a circular ring shells can be cut into four 90 101 elbow or six 60 101 elbow or other specifications of the elbow and the technology application in manufacturing bend diameter and bend diameter ratio greater than 1.5 any specification of large elbow, is currently making the ideal method for the large carbon steel elbow. The advantages of the carbon steel elbow making process are mainly shown in the following aspects: (1) the pipe blank can be used as raw material, and the cost of the equipment and the die can be saved, and the carbon steel elbow with a relatively thin wall thickness can be obtained. (2) the blank is a flat plate or a curved surface, so the blanking is simple, the precision is easy to guarantee, and the assembling and welding are convenient. (3) due to the above two reasons, the manufacturing cycle can be shortened, and the production cost is greatly reduced. Because no special equipment is needed, especially suitable for the field processing of large carbon steel elbow.

Reducing flange corrosion resistance, acid and alkali resistant, long service life and so on, the price is reasonable, the surface is smooth, acid and alkali resistant high temperature resistant, reasonable prices, good appearance, texture performance is strong Reducing flange Of Production process: professional whole forging, forging manufacture and so on Reducing flange Of Processing method: high precision CNC lathe turning, ordinary lathe car, argon arc welding and other processing Nominal pressure sch5s sch10s, sch20s sch30s, sch40s, etc Reducing flange Of Manufacturing standards: gb, American standard, the standard, Japanese standard, etc Reducing flange Of Material: 304 316 316 L, 0 cr18ni9, 321, 202, etc Reducing flange Of USES: widely used in water conservancy, electric power, power station, pipe fittings, industrial, pressure vessels, etc Reducing flange Of Connection mode: flange nut, bolt connection. Product technology standard and quality control: feed, physical and chemical, blanking, hot forging forming, heat treatment, inspection, payment processing, inspection, identification, finished goods inspection, identification, packaging type, delivery.

Stainless steel flange processing when should pay attention to what? Stainless steel flange in production and processing, in addition to go through multi-channel heat treatment process, also need to use machining process, the main tool is cutting blades, etc., but for the cutting of the stainless steel flange material is not very simple, want to consider when cutting the hardness of the stainless steel flange, and the resulting cutting hard to break, increased the difficulty of the cutting, should consider the following three aspects: First, it is according to the stainless steel elbow and hardness of various types of blank to select cutting parameter; Second, it is according to the cutting tool material, the welding quality and tool grinding conditions to select the cutting parameter; Third, the diameter is according to the parts, precision lathe and machining allowance to choose cutting parameter. The size of the reasonable choice of stainless steel elbow cutting dosage, the size of the cutting parameter will directly affect the production efficiency and processing quality of the stainless steel elbow. Reasonably choose stainless steel flange cutting when the cutting dosage, can guarantee the production efficiency and processing quality, also can do a good job in the subsequent welding process corresponding stage.

Bend and elbow the most basic difference is that the elbow is relatively short. R=1 times to 2 times the elbow, and then a large multiples of the bend. In the production process of cold bend can be readily used straight pipe with a straight pipe bending machine, a one-time completion of the two anti-corrosion. But the elbow to the manufacturers custom, to do anti-corrosion, long order cycle. Elbow price than the bend to high but the price is than the bend to a much higher, without doing anticorrosion treatment bend is easy to damage is well-known, but because of cheap price in some of the requirements are not very high engineering use very much. Bend to manufacturers custom, to anti-corrosion, long order cycle. The cold bend pipe can be bent with the ready-made straight pipe. A one-time completion of the two anti-corrosion. Cold bend pipe construction technology has an oil standard, west east gas transmission company standards. But open area with elbow is OK, only consider the cost, hot bending bend, cold bending can, of course, is high cost of elbow. Sometimes in a narrow zone must be used for elbow, such as stonework section pipe trench, because of the small elbow radius of curvature, generally for 6D, and the elbow for 40d.

Stainless steel flange in the pipeline projects often need, so we must be very pay attention to the maintenance and maintenance of stainless steel flange, in order to help you, here are made of stainless steel flange manufacturers to introduce how to maintenance and maintenance of stainless steel flange. Stainless steel flange if long term, should be regularly check, often to the leakage of machining surface must be clean, remove dirt, but also often keep the stainless steel flange, dry and ventilated. Stainless steel flange before installation, must be carefully check every standard of stainless steel flange, and remove the dirt from the stainless steel flange. Stainless steel flange ball valve, cut-off valve, gate valve, when using only for full open or full close, does not allow for regulating flow, lest sealing surface erosion, accelerated wear and tear. Gate and thread on the globe valve with pour sealing device, the handwheel back to the top position and tighten, to prevent leakage of media from the packing. Stainless steel flange elbow when installation, can press the stainless steel flange connection device in pipeline directly, carried out in accordance with the use of the location of the installation. In general, can be installed on the pipeline at any position, but need to facilitate the maintenance operation, should pay attention to the flow direction of medium by the stainless steel flange is high, the longitudinal disc below stainless steel flange can only be installed horizontally. Stainless steel flange when installation should pay attention to the sealing, prevent leakage phenomenon, affect the normal operation of the pipeline.

Why corrosion resistant stainless steel flange? All metal flange and atmospheric oxygen reaction, a layer of oxide film on the surface. Unfortunately, in the ordinary carbon steel on the oxidation of formation of iron oxide to continue to make a thorough, kept expanding rust, eventually forming holes. Can use paint or resistant to oxidation of the metal (for example, zinc, chromium and nickel) to ensure that the surface of the carbon steel metal plating, however, as most people know, the protection is only a thin film on the stainless steel flange. If the protective layer is severely damaged, the following flange began to rust. The corrosion resistance of the stainless steel flange depends on chrome, but because of the chromium is one part of the steel, so the protection method is not the same. In the chromium content of 11.7% or more, atmospheric corrosion resistance of steel increased significantly, but the chromium content is higher, although still can improve the corrosion resistance, but not obvious. Reason is that with chromium alloying of steel processing, change the type of surface oxide became similar to that of pure chromium oxide is formed on the metal surface. This tight adhesion of the rich chromium oxide protection table surface, to prevent further oxidation. This kind of extremely thin oxide layer, you can see on the surface of the steel through natural luster, make the surface of the stainless steel flange has a unique.

Application and installation of stainless steel elbow: stainless steel elbow for connecting pipe bend. Connect two pipes with the same nominal diameter, and make the pipe to make the angle turn. Material: duplex stainless steel elbow, super duplex stainless steel elbow, carbon steel elbow, aluminum alloy, stainless steel elbow, etc.. Stainless steel elbow can be said to cover the use of all walks of life, small to large household enterprises. Each stainless steel elbow has its own advantages and uses, sincerely welcome new and old friends to come to buy. The stainless steel elbow is one of the commonly used connecting pipe fittings used in pipe installation. Other names: 90 degree stainless steel elbow, right angle bend, etc.. Abrasion resistance can be favored by the market to replace some of the traditional wear resistant materials, the root cause lies in its excellent product quality, as well as in the. Required in order to obtain the performance impact of the upstream stainless steel elbow device conditions of cone flowmeter and the shortest straight pipe length. The application of computational fluid dynamics numerical simulation, simulation research of 100mm diameter, equivalent diameter than 0.45/0.65/0.85 V-cone Flowmeter to carry out the upstream single 90 degree stainless steel elbow. Simulation media for the regular warm water, Reynolds number range: 0.4981054.98105 research program and the upper reaches of the baseline of 90 degree stainless steel elbow two categories, a total of 15 groups. Based on the relative error of the mean outflow coefficient and the additional uncertainty as the main evaluation criterion of the equipment condition, the length of the straight pipe of a single 90 degree stainless steel elbow is presented and compared with the foreign research results.

Stainless steel welded pipe production characteristics below phi 219mm stainless steel pipe is welded by the continuous roll forming and longitudinally welded pipe similar phi 219mm above the pressure forming (UOE or spiral weld (see spiral welded pipe) diameter 4.76mm following the drawing after welding production of capillary. Welding method has high frequency welding, tungsten inert gas arc welding (TIG or argon arc welding) laser welding, electron beam welding, etc.. High frequency welding can not guarantee the welding quality, but the welding speed is high, suitable for the production of general structure and decorative stainless steel welded pipe. And the vast majority of stainless steel welded pipe production using argon arc welding or argon arc welding and plasma welding combination. Decorative stainless steel welded pipe requires the appearance of grinding and polishing treatment. Chemical machinery, boiler heat exchanger with stainless steel welded pipe requires the formation of internal welding. Weld quality monitoring and non destructive testing system for welding seam structure through solid solution treatment. Argon arc welding of stainless steel welded pipe production process is as follows: Plate roll slitting a strip a decoiling straightening flat all the butt welding of head and tail a loop forming argon arc welding to weld the outer gill (to welding thorn) a cooling size a eddy current flaw flying saw cutting After cut off the stainless steel pipe according to the use of products and points the following 3 kinds of circumstances: 1 does not require heat treatment and drawing pipe by straightening a flat pressure check packaging storage elbow; 2. Need to heat treatment of welded pipe by defatting bright heat disposal a straightening straight a ultrasonic flaw detection in a flat head pressure for a check a packaging storage; 3 need to draw the welded pipe through the skim a forging tip one anneal one straightening a lubrication of a drawing all the first skim a bright anneal a finishing one check a packaging a warehousing; A new technology of stainless steel welded pipe, using a plurality of electrodes (usually a three electrode) torch welding can also be is a combination of argon arc welding and plasma welding. Multi torch welding is fit for wall thickness greater than 2mm pipe, welding speed is 34 times higher than the single torch, the welding quality can also be improved. In addition, argon adding 5% ~ 10% hydrogen, using high frequency pulse welding power, welding speed is increased; in order to ensure the welding quality by the torch on the weld automatic tracking device, the arc voltage automatic control system (AVC computer control of welding process. Clear welding thorn method: 1 wall gas supporting technology, wall filled with certain pressure of inert gas to boosting the molten liquid drops, do not make the sagging, so as not to form a bonding thorn; the inner wall of the hammer technology for diameter 30mm pipe; 3. The inner wall of the rolling technology for more than 50mm in the welded tube; decorative tube to be equipped with a high efficiency of grinding and polishing equipment to improve stainless welded pipe appearance bright and clean level.

Stainless steel pipe, according to its structure is pided into austenite size stainless steel pipes, iron element markov shape stainless steel pipe, duplex stainless steel pipe, stainless steel pipe and precipitation hardening stainless steel pipe. A, austenite size stainless steel pipe Austenite size stainless steel pipe is the most important type of stainless steel, the 70% of the total output and consumption of stainless steel. According to the way of alloying austenite size stainless steel can be pided into nickel chrome steel and iron chromium manganese steel two kinds big. The former is austenitizing elements with nickel, is the main body of austenitic steel; The latter is the manganese, nitrogen instead of the expensive nickel section nickel steel grade. Overall speaking, austenitic steel corrosion resistance is good, has the good comprehensive mechanical properties and process performance, but the strength and hardness is low. Second, the iron grain size stainless steel pipe Stainless steel pipe containing chromium iron grain size by 11% to 30%, basic does not contain nickel, nickel steel is section, in the condition of using the organizational structure is given priority to with ferrite. Iron element size and high strength stainless steel pipe, and cold hardening tend to be low, the resistance to chloride stress corrosion, pit corrosion, crevice corrosion and local corrosion performance is good, but is sensitive to intergranular corrosion, poor toughness at low temperature. Third, duplex stainless steel pipe It is generally believed that there is more than 15% on austenitic matrix of ferrite, or on the ferrite matrix is more than 15% of the austenite can be called austenite plus ferrite duplex stainless steel. Austenitic steel and duplex stainless steel pipe with the advantages of ferritic steel. Fourth, markov shape stainless steel pipe Markov shape stainless steel is a kind of can adjust its performance by means of the heat treatment of steel, its strength and hardness is taller. Five, the precipitation hardening stainless steel pipe Precipitation hardening stainless steel is made by means of heat treatment in steel carbide precipitates out, so as to achieve the goal of improving strength of steel.

Commonly known as air, steam and water and other weak corrosive medium corrosion of steel for stainless steel, said acid, alkali, salt and other corrosive medium of chemical corrosive steel for acid resistant steel. Stainless steel and acid resistant stainless steel is the general name of stainless steel, referred to as stainless steel. Chromium is the main alloying element, in addition to the nickel, stainless steel pipe fittings, such as molybdenum, titanium, niobium, molybdenum, etc.. Stainless steel tube material mainly has austenitic stainless steel, ferritic stainless steel, martensite stainless steel, duplex stainless steel and precipitation hardening stainless steel. Stainless steel tube is widely used in petroleum, chemical, papermaking, chemical, automobile, aircraft, power plant, decoration and other fields. Production method of stainless steel seamless pipe can be hot, hot extrusion, cold rolling and cold drawing. In recent years due to the progress of the technology of continuous casting and continuous rolling and welding technology and application to nondestructive detection technology, continue to raise the quality of stainless steel welded pipe can be in the field of use partial substitution of stainless steel seamless pipe, and the price than seamless pipe about 20%. Current industrial application of stainless steel pipe and stainless steel seamless pipe, respectively, 50%.

Characteristics of seamless steel pipe products: 1, chemical analysis: the chemical composition of the chemical analysis, chemical composition in line with the standard requirements. 2. Air pressure. The pressure test of pressure seamless steel pipe by the pressure test, in the specified pressure value does not keep not less than 5 seconds, not leak, conventional supply water pressure test for 2.45MPa. pressure test for P=0.5MPAa. 3, corrosion test: the industrial corrosion resistant seamless steel pipe is in accordance with the standard or the two sides of the agreement of the corrosion method of seamless steel pipe corrosion resistance test, no intergranular corrosion tendency. 4, process performance test: flattening test. Tensile test. Impact test. Flaring test. Hardness test. Metallographic test. Bending test. Nondestructive testing (including eddy current flaw. X-ray and ultrasonic inspection). 5, the implementation of standards: China: GB/T14975-2002.GB/T14976-2002.GB13296-91.GB9948-88.GB5310-95.GB2270-80 United States: A213/A213-99a.ASTN312/A312M-00b.ASTM A269-00.ASTMA511-96. ASTM Japan: JIS3463.JIS3446.JIS3448.JIS3459 Germany: characteristics of DIN2462 seamless steel pipe products.