Introducing all kinds of steel flange! ! !

A, what is the flange? Flange is a kind of disc parts, more common in the pipeline engineering, the flange is used in pairs. In pipeline engineering, the flange is mainly used for pipe connection. In need of connecting pipes and all kinds of installation of a flange, the low pressure pipe flange can use silk, the use of more than 4 kg pressure welding flange. By sealing point between two pieces of flange and bolt fastening. Different stress of flange bolts with different thickness and use different. When water water pump and valve, and pipe connection, the local equipment, also made the corresponding flange shape, also known as flange connection. Where there are two surfaces in the surrounding use of bolt connection closed connection parts at the same time, generally called & other; Flange & throughout; , such as ventilation pipe connections, this kind of parts can be called & other; Flange parts & throughout; 。 But this connection is only a partial equipment, such as flange connection and water pumps, is bad call pumps & other; Flange parts & throughout; 。 Relatively small, such as valve can call & other; Flange parts & throughout; 。 Second, what is a way of connecting flange? Flange connection is an important connection mode of pipeline construction. Flange threaded connection ( Screwed) Flange and welding flange. Low pressure small diameter wire connect flange, high pressure and low pressure of large diameter used welding flange, the thickness of the flange and the connection of different pressure bolt diameter and the number is different. Flange connection is the two pipes, fittings or equipment, fixed on a flange, a first between the two flanges, plus the flange gasket, bolt fastening together, complete the connection. Some pipe fittings and equipment have been bringing flange, is also belongs to the flange connection. According to the different levels of pressure, flange gasket also have different material, from the low pressure asbestos pad, high-pressure asbestos pad to metal pads. Flange connection is convenient to use, can withstand greater pressure. Pay attention to the connection of time especially when bolts to do all of the bolt is tight. How three, flange and pipe welding them together in what place? Many flange classification. Generally with flat flange, butt welding flange ( Long neck flange) , lap joint flange, etc. Low pressure, used in flat welding flange is used to weld, both sides welding, welding depth from the flange sealing surface 2 - 5 mm, butt welding flange butt weld can be directly, without welding lap joint flange bolt connection. Four, flange is what mean? Flange is a link to connect the valve and pipeline, is the valve and pipeline connection joints by bolt connection, so the valve two end face with N uniform is flange bolt hole. 1, flange, valve and pipeline or equipment connection USES is flange connection, namely, known as the connection way for flange. 2, flange, the flange is a flange of transliteration, meaning with a flange, parts, this part can be separate, is the flange, can also be a combination of, such as the pipe end or ends with flange, flange above has several hole, in order to install screw, some bearing outer ring with a flange, the flange can be perforated, also can not perforated, just for guard position.
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