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Forged Steel Flanges Is Divided Into Structural Type
May 31, 2017

Forged steel flanges is made on the basis of cast steel flange, and its strength is much higher than that of cast steel flange, so that the pipe and pipe connected parts, connected to the pipe end. Forged steel flanges on the hole, bolts to make two flange tight. Forged steel flanges with a gasket seal. Forged steel flanges (flanged pipe fittings) refers to a forged steel flanges (flange or plate) of the pipe. It can be cast from (tentative), but also by the thread connection or welding composition. Flange, joint (flange, joint) by a pair of flanges, a gasket and a number of bolts and nuts. Gasket on the flange between the two sealing, tighten the nut, the gasket on the surface of the specific pressure to a certain value after the deformation, and fill the sealing surface on the uneven, so that the connection is tightly leaked. The flange connection is a detachable connection. According to the connected parts can be divided into container flange and pipe flange. According to the structure type, there are integral flange, loose sets of flanges and threaded flange. Common integral flange with flat welding method

Blue and butt welding flange. Flat welding forged steel flanges is poor, suitable for the pressure p ≤ 4MPa occasions; welding flange, also known as high-neck flange, high rigidity, suitable for high pressure temperature occasions. Forged flange sealing surface types are three: flat seal surface, for the pressure is not high, the media non-toxic occasions; convex sealing surface, apply to a slightly higher pressure occasions; tongue and groove sealing surface for flammable, Explosive, toxic media and high pressure occasions. A gasket is a ring made of a material that produces plastic deformation and has a certain strength. Most of the gaskets are cut from non-metallic plates or made of professional factories in the specified size, the material is asbestos rubber sheet, asbestos board, polyethylene plate, etc .; also useful thin metal plate (white metal, stainless steel) asbestos And other non-metallic materials wrapped together made of metal gasket; there is a thin steel belt with the asbestos wound with a wound wound gasket. Ordinary rubber gasket for the temperature below 120 ℃ occasions; asbestos rubber gasket is suitable for water vapor temperature below 450 ℃, the oil temperature below 350 ℃, the pressure is less than 5MPa of the occasion, for the general corrosive Medium, the most commonly used is acid asbestos board. In high pressure equipment and pipes, the use of copper, aluminum, 10 steel, stainless steel made of lens or other shape of the metal gasket. High-pressure gasket and sealing surface contact width is very narrow (line contact), sealing surface and gasket processing high finish.

Forged steel flanges is generally produced in Shanxi Dingxiang more in Henan Province for the production of forging flange-based, the best quality, the quality of cost-effective to have a great advantage.

Forged steel flanges thread connection (wire) flange and welding flange. Low pressure and small diameter with wire flange, high pressure and low pressure large diameter are used welding flange, different pressure flange thickness and connection bolt diameter and quantity is different.

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