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Marking and Use of Weld Neck Flange

2019-04-19 11:00:39   COMMENT:0 HITS:
  In pipeline engineering, Weld Neck Flange are mainly used for pipeline connection. In pipelines that need to be connected, all kinds of Weld Neck Flange are installed. Low pressure pipelines can use wire Weld Neck Flange. Weld Neck Flange are used for pressure of more than 4 kg. Sealing gaskets are added between Weld Neck Flange, and then bolted. Weld Neck Flange with different pressures have different thickness and use different bolts. Pumps and valves, when connecting with pipelines, this is the case. Some parts of equipment and equipment are also made into corresponding Weld Neck Flange shapes, also known as flange connections. Where two planes are connected by bolts and closed at the same time, they are generally referred to as "flanges", such as the connection of ventilation pipes, which can be called "flange parts". But this connection is only part of a device, such as the connection of Weld Neck Flange and pumps, so Weld Neck Flange is difficult to make water supply. Pumps are called "flange parts". Smaller ones, such as valves, can be called "flange parts".

  DIN 2633 PN16 Sch30 Stainless Steel Weld Neck Flange shall be marked according to nominal diameter, nominal pressure, sealing surface form code, matched steel pipe series code (matched with metric pipe code "Series 2", matched with British pipe not marked) and standard number.

  Weld Neck Flange Examples of marking: 80 mm nominal diameter, 4.0 MPa nominal pressure (25bar) convex face welded steel pipe flange (with metric pipe)

  Weld Neck Flange DN80-PN40 M (Series 2) GB/T9115.2-2000

  Weld Neck Flanges of flat welded steel pipe with protruding face and neck with nominal diameter of 100mm and nominal pressure of 5.0MPa (25bar) (with English pipe)

  Flange is a kind of disc-shaped parts, which is most common in pipeline engineering. Flanges are used in pairs.

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