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Dimensions & Weight Of EN 1092-1 PN25 Type 11 Welding Neck FlangeRated DiameterFlange DimensionNeck SizeRaised FaceScrews ParameterWeight FlangeACDTHXBRDGfhThreadBolt holesKG/PCS200219,131036030802446,31016278326M241217,10025027337042532882987,11218335330M271224,300300323,943048534923528,01218395430M271631,800350355,6490555381003988,01220450433M301648,800400406,4550620401104528,81220505436M331663,300450457600670461105008,81220550436M332076,0005005086607304812555810,01220615436M332097,0006006107708454812566011,01220720539M3620121,0007007118759605012976014,21220820542M3924155,00080081399010855313886416,01222930548M4524205,000900914109011855714896817,512241030548M4528249,000100010161210132063160107020,016241140556M5228338,000 If any inquiry about products, please feel free to contact us sales@wilsonpipeline.com EN 1092-1 Type 11 Welding Neck Flange: EN 1092-1 PN6 TYPE11 Welding Neck Flange EN 1092-1 PN10 TYPE11 Welding Neck Flange EN 1092-1 PN16 TYPE11 Welding Neck Flange EN 1092-1 PN25 TYPE11 Welding Neck Flange EN 1092-1 PN40 TYPE11 Welding Neck Flange

Stainless steel and carbon steel composite flange production generally have two ways: one is the use of explosive or rolling method will be made of stainless steel plate and carbon steel composite plate, and then made into a flange. Stainless steel flanges made of this method are good. However, the requirements of the composite technology, composite equipment and personnel are very high, the general production of manufacturers can not do, and the cost is higher; two is on the carbon steel flange sealing surface, welding on stainless steel plate, and then in the lathe Colonel level. This method makes the composite flange use effect is not good, but the technology, equipment and personnel requirements is not high, the general factory can do, and can use the stainless steel plate of the side of the waste, the cost is lower. I plant in 1993 began to use this method to produce stainless steel flange / carbon steel composite flange. Its production method is as follows: to prepare a piece of rough or carbon steel flange without a car sealing surface as a base material. With 4 ~ 6mm stainless steel plate splicing flange sealing surface, outer diameter and the outer diameter of the original flange sealing surface, a small diameter of 2 ~ 3mm, easy to weld flange and pipe. In the stainless steel seal surface of the center line, the drill several holes, and then spent a few hand vise the stainless steel flange sealing surface of the clip to ready the pipe flange on the substrate. Good fitting, do not have a gap. To be sealed stainless steel surface and the pipe flange base leveling, clamping, first spot, by full welding note wall thickness of flange not produced large deformation. If the pipe flange is connected to the pipe should be in the pipe flange of the inner ring welded on a corresponding stainless steel pipe.  Stainless steel and carbon steel composite flange is based on the principle of the pipe flange sealing surface and the medium contact surface of stainless steel plate and stainless steel tube, so that the corrosion medium does not contact the pipe flange of the steel parts, so as to get the same service life with stainless steel flange. Coupled with the composite flange of the base material is carbon steel, so that the pipe flange with stainless steel and carbon steel flange of many excellent properties, and the production of simple, low cost. Therefore, the composite flange has a strong practical applicability.

Stainless steel flange is a kind of disc parts, in the pipeline engineering is the most common, stainless steel flanges are used in pairs. In the pipeline engineering, stainless steel flange is mainly used for pipe connection. In connection with the need to connect the pipe, all kinds of installation of a piece of flange, low pressure pipe can use stainless steel wire to connect the flange, 4 kg more than the use of stainless steel welding flange. Two stainless steel flange plate with the sealing between the points, and then use the bolt fastening. Different pressure stainless steel flanges have different thickness and different bolts. Pumps and valves, in connection with the pipe, the part of the equipment, the shape of the corresponding stainless steel flange, also known as the stainless steel flange connection. All in the vicinity of the use of the two plane bolt connection and the closure of the connecting parts, are generally referred to as the “flange”, such as ventilation pipe connection, this kind of parts can be called “flange type parts”. But this connection is only a part of the device, such as the connection of the flange and the pump, the pump is called “flange type parts”. Relatively small, such as valves, can be called “flange type parts”. In industrial pipe, the use of flange connection is very extensive. In the family, the stainless steel pipe diameter is small, and it is low pressure, can not see the flange connection. If in a boiler room or in the production site, there are all of the flange connection pipe and equipment.

Stamping by press and mold for sheet, strip, tube and profiles, such as external force, to produce plastic deformation or separation, to obtain the required shape and size of the workpiece (stamping) and stainless steel flange forming method. Stamping and forging belong to plastic processing (or pressure processing), called the forging press. Stamping of billet is mainly hot rolling and cold rolling steel plate and steel belt. Steel all over the world, there are 60 ~ 70% is plank, most of them after punching into finished products. Flange stamping process Used by stamping mold known as the stamping die, die for short. Die is the material (metal or non-metallic) processing into salt pieces of special tools required. Die is of vital importance in the flange stamping, did not conform to the requirements of punching die, stamping production batch is difficult; No advanced punching die, stamping process of advanced cannot achieve. Stamping process and die, stamping equipment and materials to form the three elements of stamping processing, can only draw stamping them together. Compared with the castings, forgings, pressing with a thin, uniform, the characteristics of light and strong. Stamping can make other methods are difficult to manufacture with stiffener, ups and downs, or flange pipe fittings, in order to improve its stiffness. Because use precision mould, workpiece precision can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc. Cold stamping generally no longer by machining, or only need a small amount of machining. Hot stamping precision and surface state is lower than the cold stamping parts, but it’s still better than the castings, forgings, cutting processing capacity.

Stainless steel, an alloy of iron that contains ten percent chromium, is a very resilient material used in a wide range of household and industrial products. It’s resistant to rust and tarnish due to the chromium film on its surface. If this chromium film is removed, the utensil will begin to rust. In the event that your stainless steel flange do have rust on it, follow these instructions to remove it. Seven steps of stainless steel flange derusting 1, before the first stainless steel flange surface rust removing all visible dirt, and then use solvents or cleaning agents to remove oil. 2, with the shovel knife to tungsten steel stainless steel flanges large area corrosion. 3, with scraper and wire brush to remove the stainless steel flange corner of the corner of the corrosion. 4, with a file to remove surface of stainless steel flange welding slag and other protrusions and various burrs. 5, the use of cloth and steel wire brush to clean stainless steel flange. 6, with a clean cloth, but also can be used to clean the solvent and the solvent to clean and timely painting primer. 7, pay attention to for yet fail the toughness of the coating may be preserved, and emery cloth polishing old paint surface, the coating defect polished axe shape and clean after direct painting.

Carbon steel flange, the body is made of carbon steel flange or end flanged fittings. Contains carbon steel material of flange, known as the carbon steel flanges. Common material for the casting of the carbon steel grades WCB, forgings A105, or Q235B, A3, 10 #, 20 # steel, 16 mn, 45 # steel, Q345B, etc. There are three kinds of carbon steel flange sealing surface type: planar sealing surface, suitable for the occasion of pressure is not high, medium non-toxic; Concave-convex sealing surface, suitable for pressure slightly higher occasion; Mortise sealing surface, suitable for flammable, explosive, toxic medium and high pressure situation. Ordinary rubber gasket is suitable for the occasion of temperature below 120 ℃; Asbestos rubber gasket suitable for vapor temperature below 450 ℃, the oil temperature is below 350 ℃, pressure is lower than 5 Mpa, for general corrosive medium, the most commonly used is acid-proof asbestos board. Carbon steel flange gasket is a kind of can produce plastic deformation, and has certain strength rings made of materials. Stiffness requirements for carbon steel flange, flange design, strength calculation, only the few stiffness calculation, but more and more of the production practice has proved that may also affect the flange sealing flange stiffness, less rigid flange buckling deformation will produce too much, make the gasket stress is not uniform, and cause leakage. Carbon steel flange connection is a detachable connection. According to the connection of parts can be pided into the vessel flange and pipe carbon steel flange. In high voltage equipment and pipelines, using 10 copper, aluminum, steel, stainless steel type lens or other shaped metal gasket. High pressure washers and sealing surface contact width is very narrow (line contact), the sealing surface with gasket processing carbon steel flange finish higher.

Corrosion resistance of stainless steel with the increase of carbon content and reduce, therefore, the majority of stainless steel carbon content are lower, the maximum not more than 1.2%, some steel Wc (carbon content) and even less than 0.03% (such as 00Cr12). The main alloying element in stainless steel is Cr (CR), only when the Cr content reaches a certain value, the steel has the corrosion resistance. Therefore, the stainless steel general Cr (CR) content of at least 10.5%. Stainless steel also contains Ti, Mn, Ni, N, Nb, Mo, Si, Cu and other elements. Stainless steel is often pided into: martensitic steel, ferritic steel, austenitic steel, AUSTENITIC FERRITIC (duplex) stainless steel and precipitation hardening stainless steel. In addition, can be pided into: chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel, etc.. Large stainless steel flange common marking method, the American Iron and Steel Institute is to use three digits to label a variety of standard grade of stainless steel. Among them: Large stainless steel flange with 200 and 300 series digital mark, 400 series of digital representation for ferrite and martensite stainless steel. For example, some of the more common austenitic stainless steels are marked with 310, 304, 316, and 201, The ferrite stainless steel is marked with 430 and 446, and the martensitic stainless steel is marked with 410, 420, and 440C, and the dual phase (austenite ferrite) is a double phase, High alloy stainless steel, the precipitation hardening stainless steel and iron is less than 50% is usually used patent name or trademark naming.

The corrosion of stainless steel flange, is usually characterized by the thinning of the wall of the stainless steel flange, a partial pits and pitting. Stainless steel flange corrosion detection method is the method of magnetic flux leakage and ultrasonic test. Stainless steel flange has its rubber sealing, vacuum seal main metal seal and magnetic fluid seal. Among them, the metal seal can satisfy the requirement of ultra high vacuum, but has the following disadvantages: metal sealing ring elasticity bad, takes a lot of seal. Repeated use is very poor; The roughness of the flange sealing surface and edge and with high accuracy; Seal and flange material thermal expansion coefficient difference is bigger, easy to cause local deformation caused by the leakage. The thermal expansion coefficient of the stainless steel pipe is similar to the copper pipe., is 1.5 times that of ordinarystainless steel pipe compared with stainless steel flange. pipe fitting has the characteristics of slow heat bilges cold shrink. Stainless steel is generally not local corrosion, chloride content of the resistance of 304 stainless steel can be up to 304 PPM, chloride content of the resistance of 316 stainless steel can be up to 316 PPM, this conclusion is based on exposure experiment data which has been confirmed by experience. The corrosion resistance of the stainless steel flanges in all kinds of stainless steel pipes are the best. Because stainless steel flanges can passivation with oxidant, in the density of surface forming a layer of tough rich chromium oxide film Cr2O3, effective to prevent further oxidation reaction to occur. Will not happen like carbon steel, stainless steel flange uniform corrosion, when used without protective coating.

High pressure flange is used very widely, but its quality requirements are very high, traditional high pressure flange: is the seal (oval gasket, octagon gasket, gasket, etc.) pad plastic deformation to achieve sealing effect and connected to the end of the tube, pipe and the pipe are mutually connected parts, there are holes on the flange, stud the two flange are closely linked. High pressure flange in use, has a good role and value, the premise is to be in accordance with the appropriate method to use, in the installation of the first to follow the guidance of the expert to install, in order to better guarantee the use value, better service life. Second, during the installation, the sealing pad is not allowed to replace the ordinary gasket, must choose the appropriate sealing pad to ensure the best sealing effect. 5 characteristics of high pressure flange 1, sealing principle belongs to plastic deformation 2, by bolt connection 3, bolt to bear the tension, temperature stress, and bear the bending moment, torque, etc. 4, bulky, heavy weight, installation position is very difficult. 5, the sealing performance is not stable, especially in the harsh (high temperature, high pressure, medium is highly toxic), prone to leakage, resulting in serious consequences.

Alloy flanges for special characteristics of pipelines and pipelines, and more for high temperature and high pressure. The common materials are 12Cr1MoV, 15CrMo, P91, P22, 10CrMo910 and so on. Alloy flange is the two large diameter pipe connection device, is usually two flange piece plus a number of fastening bolts. Alloy flange is made of steel flange. Low carbon steel flange with good low strength, the addition of appropriate amount of carbon will become hard, plastic reduce strength. Alloy flange connection may need to bear high tensile, compressive, anti torsion, shear strength, large flange is a better choice. The main design defect of the alloy flange is that it can not guarantee no leakage. This is less than its design: connection is dynamic, and such as thermal expansion and the ups and downs of the periodic load will cause the movement between the flange, affect flange, so that the flange of the integrity of damaged, resulting leakage. Any product can not have no defects, just try to control the lack of products to the least, so the company in the production of alloy flanges to improve the performance of the product, so that the largest role. The liquid shrinkage and shrinkage of the alloy in the production of alloy flanges are reduced, which is usually expressed by volume shrinkage, which is the basic reason of the shrinkage porosity and shrinkage defects of castings. Although the solid shrinkage of the alloy is also the volume change, it only causes the change of the external dimension of the casting. Solid shrinkage is the root cause of internal stress, deformation and crack of casting. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Established in 2008, wilsonpipeline Pipe Industry Co., Limited is a professional organizer and one-stop-shop supplier for steel piping system products, including Stainless Steel SS 304/ 304L, SS 310/ 310S, SS 316/ 316L, SS 317/ 317L, SS 321, SS 904L grades in form of Flanges, Pipe Fittings, Buttweld Fittings,Threaded Fittings, Socket Weld Fittings, Fasteners, Pipes & Tubes, Sheets ,Plates, Round Bars, Olet Fittings and Bends etc. Stainless Steel Pipes & Tubes Stainless Steel Pipes & Tubes in these availble grades ASTM A312 TP304/L/H, 310/H, 316/L/H/Ti, 321/H, 347/H, 410, 904L with high quality. We also manufacture and export Stainless Steel Pipes & Tubes in other materials also like Nickel Alloys, Carbo Steel , Mild Steel, Alloy Steel etc. Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 Grades: 304/304L/304h,310/310S/310H,,316/316L/316H/316Ti, 317/I,321/321H,347/347H,904L.UNS S31803/S32760 Size: 1/2″ to 24″ Seamless upto 60″ in Welded Forms: Seamless Pipes & Tubes, Welded Pipes & Tubes Thickness: SCH 5S TO SCH 160 Stainless Steel Flanges Stainless Steel Flanges in these availble grades ASTM A/ASME SA213/A249/A269/A312/A358 with high quality Flanges like Weld Neck Flanges, Blind Flanges,Slip On Flanges,Threaded Flanges,Socket Weld Flanges. We also manufacture and export Stainless Steel Flanges in other materials also like Nickel Alloys, Carbo Steel , Mild Steel, Alloy Steel etc. Standards: AISI B16.5, AISI B16.47, AISI B16.36, MSS SP44, API6A, BS 4504, EN1092, UNI 2277/2278, DIN 4504 Grades:310S, 310, 309, 309S, 316, 316L, 316Ti, 317, 317L, 321, 321H, 347, 347H, 304, 304L, 302, 301, 201, 202, 405, 410, 420, 430, 904L etc. Size: 1/2″-100″ Forms: Blind Flanges, Slip on Flanges, Threaded Flanges, Spectacle Blind Flanges, Weld Neck Flanges etc. Thickness: SCH5S-SCH160, XS, XXS, STD Stainless Steel Pipe Fittings Stainless Steel Pipe Fittings in these availble grades ASTM A403 / ASTM A312/A213/A249/A240/A276/A403/A164 with high quality Butt-weld Fittings, Socket Weld Fittings, Threaded Fittings. We also manufacture and export Stainless Steel Butt-weld fittings, Stainlesss Steel Socket Weld Fittings ,Stainlesss Steel Threaded Fittings in other materials also like Nickel Alloys, Carbon Steel , Mild Steel, Alloy Steel etc. Standards: ASME, ANSI B1.9, MSS SP43, DIN2605, 2615, 2616, 2617, JIS B2311, 2312, 2313,EN 10253-1, EN 10253-2 Grades:310S, 310, 309, 309S, 316, 316L, 316Ti, 317, 317L, 321, 321H, 347, 347H, 304, 304L, 302, 301, 201, 202, 405, 410, 420, 430, 904L etc. Size: 1/2 NB – 48 NB Forms: Butt-weld Fitings , Forged Fittings(Threaded & Socket Weld) Thickness: SCH10S, XXS Stainless Steel Fastener Stainless Steel Fasteners like nuts, bolts, Washers, rings, stud bolts, Screw in these availble grades ASTM A/ASME SA213/A249/A269/A312/A358 with high quality. We also manufacture and export Stainless Steel Fasteners in other materials also like Nickel Alloys, Carbn Steel , Mild Steel, Alloy Steel etc. Standards: ANSI, DIN, AS, BS and etc Dia: 1/4-1″ (ANSI), M5-M56(DIN) Length: 5/8-14″(ANSI), 10-400MM(DIN) Grades: SS201.SS304.SS316.SS316L Range: M4 To M100

The internal structure of the casting flange is loose and uneven, and the strength and quality are difficult to be guaranteed. The forging molding is more and more energy consumption and high cost. For weeks to continuous distribution, metal grain arranged tight and neat, fast molding, low energy consumption, saving materials, good surface quality, forming quality higher, many advantages of the flange of the rapid development of rolling and forming a piece of fiber. Test material The deformation of lead at room temperature is similar to that of steel in hot state. It can be stopped at any time. Pass design Because the process of the flange rolling is a continuous rolling process in a pass, the pass is based on the external contour of the test object. For the convenience of metal flow and prevent the occurrence of local stress concentration phenomenon, neck, plate intersection is designed into a circular arc shape; in order to avoid the metal in the deformation has clamping phenomenon, pass groove design to slope. Blank design The rolling forming of flange has great relationship with the design of blank. So far, there has not been a certain formula to calculate the size of the flange. From the point of view of the data, and flange belong to special section ring parts rolling blank design, mostly according to past experience or approximate section of product design gives the rough approximate shape, through the test machine, again to determine the blank of the optimum size correction. Because of the plasticity and good filling of flexible graphite, when using the pad to the matched flange sealing surface does not need to precision machining, the flange sealing surface of waterline; groove can also adapt and relatively more economical. This gasket also known as flexible graphite metal reinforced composite gasket, it is a metal tooth plate or piercing metal core plate with flexible graphite particles composite pressure into a sealing gasket, which is usually made of flexible graphite composite reinforced board, a typical flexible graphite metal reinforced composite flange gasket. According to the needs, flexible graphite metal composite flange gasket can be made with stainless steel or carbon steel inner wrapping or outside wrapping. The main features of the gasket is: good resistance to high and low temperature, have corrosion resistant, radiation resistant performance, high strength, used in high pressure conditions. The required pre tightening force is smaller than that of a metal pad or a metal wound gasket.