Asme B16.47 Ser,A Class150 Welding Neck Flanges

Brief description

Flange is also called flange flange or flange. Flanges are the interconnected parts between shafts and are used for the connection between pipe ends; they are also used as flanges on the inlet and outlet of equipment for the connection between two equipment, such as reducer flanges.

Product content

Butt welding flange with neck refers to a flange with a neck and a round pipe transition and connected to the pipe butt welding. Butt welding flange is suitable for pipelines with large fluctuations in pressure or temperature or high temperature, high pressure and low temperature pipelines. It is also used in pipelines for conveying expensive, flammable and explosive media. The difference between the necked butt welding flange and the necked flat welding flange includes the different welding seam forms: the welding seam of the necked flat welding flange pipe and the flange is a fillet weld, while the necked butt welding flange and the pipe are in the form of a fillet weld. The form of welding seam is girth welding seam; the materials are different: the material of the neck flat welding flange is machined from ordinary steel plates with a thickness that meets the requirements, while the material of the necked butt welding flange is mostly machined from forged steel; The nominal pressure is different: the nominal pressure of the necked flat welding flange is: 0.6---4.0MPa, and the nominal pressure of the necked butt welding flange is: 1--25MPa. Another point is that the weld between the necked butt welding flange and the connecting pipe is a B-type seam, and the necked flat welding flange and the connecting pipe belong to the C-type seam, and the non-destructive testing after welding is different. Welding neck flanges and butt welding flanges with necks cannot be replaced casually. In terms of manufacturing, flat welding neck flanges (SO is the abbreviation of SLIP ON) have a large inner diameter, which means less weight and lower cost. In addition, the nominal Weld neck flanges with a diameter greater than 250mm (WN is the abbreviation of WELD NECK) need to be tested, SO flanges do not need to be tested, so the cost is low.

Our advantage:

1. Years of production experience in butt welding flange manufacturers, strong financial strength. With complete production equipment, it is sufficient to produce flanges of various specifications and materials.

2. The butt welding flanges of general specifications are in stock all the year round, which can meet the needs of customers for short-term delivery and ensure the interests of customers.

3. One-stop production and processing from raw materials entering the factory to product leaving the factory to improve product cost performance.

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