flat welding flange-manufacture,factory,supplier from China
(Total 24 Products for flat welding flange)
The full name of die forging is die forging. The heated blank is placed in a forging die fixed on the die forging equipment and is forged into shape. The basic processes of die forging: blanking, heating, pre-forging, final forging, skin punching, trimming, tempering, and shot blasting. Commonly used processes include upsetting, lengthening, bending, punching, and forming. Commonly used die forging equipment: die forging hammer, hot die forging press, flat forging machine and friction press, etc.
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The first thing to look at is the height of the protrusion (convex surface), and the second thing is to see whether there is an anti-slip ring on the protruding surface (convex surface). The former is, but the latter is not. Moreover, the two flange connection forms are also different.
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American standard carbon steel flange neck flat welding flange SO flange ensures qualityIn pipeline engineering, flanges are mainly used for the connection of pipelines. In the pipelines that need to be connected, install a flange. Low-pressure pipelines can use wire flanges, and welding flanges can be used with pressures above 4 kg. Add a sealing point between the two flanges and tighten them with bolts. Flanges for different pressures have different thicknesses and use different bolts.
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Flat welding flange connection is the two pipes, pipe fittings or equipment, first fixed on a flange, between the two flanges, plus flange pad, bolted together to complete the connection. Some pipe fittings and equipment have their own flanges, which are also flange connections. Flat welded flanges are divided into threaded connection (wire connection) flanges and welded flanges. Low pressure small diameter wire flange, high pressure and low pressure large diameter are welded flange, different pressure flange thickness and connection bolt diameter and number are different.
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Product Advantages1. Strong corrosion resistance: stainless steel flat flanges can be used in various environments with corrosive media such as strong acids, weak acids, salts, and oxidants. 2. Good high temperature resistance: stainless steel flat flange has good high temperature resistance and can be used for a long time under high temperature conditions. 3. High hardness: The stainless steel flat flange has high strength and high hardness, is not easy to deform, and has a long service life. 4.
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The forging process generally consists of the following steps, namely, selecting high-quality steel billets for blanking, heating, forming, and cooling after forging. The forging process methods include free forging, die forging and membrane forging. During production, different forging methods are selected according to the quality of the forgings and the size of the production batch.Free forging has low productivity and large machining allowance, but the tools are simple and versatile, so it is widely used for forging single pieces with simple shapes and small batch production of forgings.
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Compared with the necked flange, the flat flange can be divided into carbon steel flat flange, stainless steel flat flange and alloy steel flat flange according to the material. The structural forms of flange include integral flange and unit flange.Flat flange standard system1) Nominal pressure: 0.25Mpa~42.0Mpaa. Series 1: PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42 (main series)b.
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Large diameter series, stainless steel series, carbon steel series, alloy steel series, our factory's main products include: neck flange, butt welding flange, plate flat welding flange, flat flange flat welding ring loose flange, Welding ring loose flange, integral flange, forged flange, flange cover, please call us for inquiries and look forward to cooperating with you.The execution standards of butt welding flanges are: chemical standard HG20592-2010, national standard GB/T9119, petrochemical standard SH/T3046, mechanical standard JB/T81-94, etc.
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Product Advantages2.Easy installation and maintenance: The installation process of carbon steel flat flange is relatively simple, and the connection can be completed without using special tools. Moreover, when the piping system needs maintenance or replacement, the disassembly of the flat flange is relatively easy.3.Strong applicability: carbon steel flat face flanges can be used in many different pipeline connections, including high pressure, high temperature and low temperature pipeline systems.
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Application Scenarios:Machinery and equipment field: In the assembly process of machinery and equipment, flat flange nuts are often used as fasteners to connect metal plates. Due to its simple structure, easy installation and good sealing effect, flat flange nuts are widely used in the assembly of circuit boards, automobile body panels and other panels.Automobile manufacturing field: In the assembly process of automobile manufacturing, the use of flat flange nuts as frame fasteners is very common.
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Application Scenarios:Power industry: Various thermal and steam pipelines in the power industry need to be connected using socket welding flanges to ensure the safety and stability of the pipelines.Pharmaceutical industry: Various drugs and materials in the pharmaceutical industry need to be transported through pipelines, and socket welding flanges are the ideal choice for connecting these pipelines.Shipbuilding: Shipbuilding involves a large number of pipeline connections, and socket welding flanges play an important role in these pipeline connections.Mechanical manufacturing: Various pipelin
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During free forging, the shape of the forging is gradually forged from the blank through some basic deformation processes. The basic processes of free forging include upsetting, drawing, punching, bending and cutting.Upsetting. Upsetting is an operation process of forging the original blank along the axial direction to reduce its height and increase its cross-section. This process is commonly used for forging gear blanks and other disc-shaped forgings. Upsetting is divided into two types: total upsetting and partial forging. Pull out.
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Petroleum and chemical industry: In the petroleum and chemical industry, welding end flanges are widely used due to the fact that pipelines and equipment generally transport liquids or gases.
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The neck flat welded flange, like the plate flat welded flange, is also a flange that extends the steel pipe, pipe fittings, etc. into the flange and connects with the equipment or pipe through the fillet weld.2, sealing formThe sealing surface forms of flat welded flange with neck are:Convex surface (RF), concave surface (FM), convex surface (M), tenon surface (T), groove surface (G), full plane (FF).Diameter range of neck flat welded flange: DN10~DN600.3.
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Compared with the necked flange, the flat flange can be divided into carbon steel flat flange, stainless steel flat flange and alloy steel flat flange according to the material. The structural forms of flange include integral flange and unit flange.Compared with the necked flange, the flat flange can be divided into carbon steel flat flange, stainless steel flat flange and alloy steel flat flange according to the material. The structural forms of flange include integral flange and unit flange.
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Stainless steel flanges also have high strength and durability. Stainless steel material has good mechanical properties, so that the flange can withstand greater pressure and tension, to ensure the stability and safety of the pipeline system. Stainless steel flanges can also be used for a long time without easy damage, reducing the frequency of maintenance and replacement, and reducing the cost of use.When selecting stainless steel flanges, it is necessary to take into account the working conditions and requirements of the piping system.
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The main production processes are mainly divided into four types: forging, casting, cutting and rolling.The cast flange has accurate rough shape and size, small processing volume, and low cost, but it has casting defects (pores, cracks, inclusions); the internal structure of the casting has poor streamlined structure (if it is a cutting part, the streamlined shape is even worse);Forged flanges have low carbon content and are generally less likely to rust than cast flanges.
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SA105 B16 is a widely used low-alloy steel material in the manufacturing of valves and pipeline connection components. It has excellent mechanical properties, low-temperature resistance, and welding performance, able to meet the needs of various complex working environments.Through normalizing treatment, the tensile strength of SA105 B16 can reach the range of 485MPA to 655MPA, exhibiting good mechanical properties. It can undergo impact testing at -46°C, suitable for working in low-temperature environments.
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High neck flange: compared with the butt welding flange, the welding workload is large, the welding rod consumption is high, can not withstand high temperature and high pressure and repeated bending and temperature fluctuations, but the field installation is more convenient, can omit the weld film detection process, and is more popular.
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The welding end flange has multiple functions, the main ones being:Connecting pipe: Welding end flanges are commonly used parts in pipe connection, which can connect two pipes together to form a closed transmission system.Sealing medium: The sealing performance of the welding end flange is good, which can effectively prevent medium leakage and ensure the sealing performance of the pipeline system.Support and fixing: The welded end flange has high connection strength and can withstand large pressures and loads.
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The welding end flange is a pipe fitting used to connect pipes with pipes, pipes with fittings, pipes with equipment, etc. It is a disc-shaped part that is most commonly used in pipeline engineering. The welding end flange has holes, and bolts are used to tightly connect the two flanges, with gaskets between them for sealing. The welding end flange connection is a convenient and fast connection method that can withstand high pressure and is widely used in the fields of petroleum, chemical, natural gas, power station, metallurgical pipeline, etc.
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Flat welded flange with neck belongs to the national standard flange system. It is one of the manifestations of the national standard flange (also known as GB flange), and is one of the commonly used flanges on equipment or pipelines. The neck height of flat welded flange with neck is low, which improves the stiffness and bearing capacity of the flange.
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Butt welded flange is generally made by forging or forging rolling process. When the steel plate or section steel is used, the following requirements must be met: 1, welding flange should be ultrasonic detection, no delamination defects; 2. It should be cut into strips along the rolling direction of the steel, bent and welded into a ring, and make the surface of the steel form a cylinder of the ring. The steel plate shall not be machined directly into a neck butt welding flange; 3, the butt weld of the ring should adopt full penetration weld; 4.
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The material of the welding end flange can be selected according to the application requirements and working environment. Common materials include carbon steel, stainless steel, and alloy steel.Carbon steel welding flanges have good corrosion resistance and toughness, and are suitable for low-pressure and low-temperature media such as air, water, and petroleum. Stainless steel welding flanges have good corrosion resistance and high temperature performance, and are suitable for media with high corrosion resistance requirements, such as acids, alkalis, and seawater.
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Relate News
Flange is a disk-shaped part, z is common in pipeline engineering, flanges are used in pairs. In pipeline engineering, the flange is mainly used for pipeline connection. In the pipeline that needs to be connected, a variety of installation of a piece of flange, low-pressure pipeline can use silk flange, more than 4 kilograms of pressure use welding flange. The gasket is added between the two pieces of flanges, and then tightened with bolts.
Carbon steel flange in accordance with national standards require the size, tolerance range and other production of the flange, the difference between the flange is not produced according to standard sizes also known as the second standard flange (some people call non-standard flange is incorrect), usually some unscrupulous businessmen will reduce the thickness of the flange, the outer diameter of the two dimensions to achieve the purpose of saving materials, and the use of scrap steel or steel processing flange of the edge material.Usually this steel is the chemical composition and mechanical
Another layer of national standard flange means: according to the national standard requirements of the size, tolerance range, etc.
Carbon steel flange another layer of meaning: according to the national standard requirements of the size, tolerance range, etc.
Carbon steel flanges are precise in shape and size, with low machining and low cost. However, cast flanges will have holes, cracks and impurities, and the internal structure of the casting is poor. The advantage is that it can have more complex shapes and be produced at low cost. Plain carbon steel flanges are less susceptible to rust and have a denser structure because they have a lower carbon content than cast flanges. They can withstand shear and tensile forces better and have better mechanical properties than forged flanges.
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