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Carbon steel;
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Original description
<p><strong style="font-family: Kaiyi_gb2312;font-size: large;line-height: 1.5;"> Forged flange (flang)</strong></p><p> </p><div><nbsp;<<font size="4" face="Kaiyi_GB2312"><strong> Also known as flange or ridge.</strong></font></p><div> <p><font size="4" face="KaiTi_GB2312"><strong> Forged flange is invented on the basis of cast steel flange, and its strength is much higher than that of cast steel flange</strong></font></p><div> </div><<fontsize="4" face="KaiTi_GB2312"><strong> Parts that connect the pipe and the pipe to each other are connected to the pipe end.There are holes in the forged flange, and bolts make the two flanges tightly connected.The forged flanges are sealed with a gasket.Flanged pipe fittings refer to pipe fittings with forged flanges (flanges or trays).It can be made of casting (not available at the moment) or it can be made of threaded connection or welding.The flange joint is composed of a pair of flanges, a gasket and several bolts and nuts.The gasket is placed between the sealing surfaces of the two flanges. After tightening the nut, the specific pressure on the surface of the gasket reaches a certain value and then the uneven parts on the sealing surface are filled to make the connection tight and not leak.Flange coupling is a removable coupling.According to the connected parts, it can be divided into container flanges and pipe flanges.According to the structural type, there are integral flanges, lid sleeve flanges and threaded flanges.Common integral flanges include flat welded flanges and butt-welded flanges.The flat-welded forged flange has poor rigidity and is suitable for pressure p≤4MPa;; butt-welded flange is also called high-neck flange, with high rigidity and is suitable for situations with higher pressure and temperature.There are three types of forged flange sealing surfaces: flat sealing surfaces, suitable for situations where pressure is low and media is non-toxic; concave and convex sealing surfaces, suitable for occasions where pressure is slightly higher; tongue and groove sealing surfaces, suitable for flammable, explosive, toxic media and high pressure.A gasket is a ring made of a material that can produce plastic deformation and has a certain strength.Most gaskets are cut from non-metallic plates or made by professional factories according to prescribed sizes. The materials are asbestos rubber plates, asbestos boards, polyethylene plates, etc.; there are also metal-pack gaskets made of wrapping non-metallic materials such as asbestos (white metal sheets, stainless steel) with thin metal plates (iron sheets, stainless steel); there are also a winding gasket made of thin steel strips and asbestos belts.Ordinary rubber gaskets are suitable for situations where the temperature is below 120℃; asbestos rubber gaskets are suitable for situations where the water vapor temperature is below 450℃, oil temperature is below 350℃, and pressure is below 5MPa. For general corrosive media, acid-resistant asbestos boards are commonly used.In high-pressure equipment and pipelines, metal gaskets of lens type or other shapes are made of copper, aluminum, No. 10 steel, stainless steel.The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish between the sealing surface and the gasket is relatively high.</strong></font></p><div> </div><p> </p><font size="4" face="KaiTi_GB2312"><strong> Forged flange is divided into threaded connection (wire joint) flange and welded flange.Low-pressure small diameter wire-connected flanges, high-pressure and low-pressure large diameters are used for welding flanges. The thickness of flanges of different pressures and the diameter and number of connecting bolts are different</strong></font></p><div style="font-size: 0.0px;">>Template protection code 0528 </div>
