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Integral flange

Integral flange

Integral flange is a kind of flange connection. It is also a kind of steel pipe flange with weld neck flange. Materials are carbon steel, stainless steel, alloy steel and so on. In domestic each standard, use if to express integral flange. Mostly used in high pressure pipes. Production process is generally foundry. In a flange type, a “if” is used to represent the type of overall flange. General protruded (RF), in flammable, explosive, high and extremely hazardous operating conditions, the form of sealing face of convex and concave surface (MFM) and (TG) with tenon and groove surface other than rf surface can be selected 。

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Application

Integral flanges are often integrated with equipment, pipes, valves, etc. This type is commonly used on equipment and valves.

The difference between Neck butt welding flanges and integral flanges

The butt weld flanges and integral flanges are welded with a long neck. How to distinguish the butt weld flanges and integral flanges in terms of appearance, size and use? From the appearance, the integral flange end is thicker than the weld neck flange end, and the internal diameter of the integral flanges is the same with the nominal diameter except PN1.6MPa and DN450. The neck height of the integral flange is high, and the thickness of the wall thickness is relatively thick. In terms of application, the integral flange is the flange which  connected with the equipment, such as the flange on the valve, which is integrated with the valve, not connected by welding. Integral flanges are often used in equipment manufacturing and are rarely used in piping design. The weld neck flange  with neck is used when connecting with valves, pumps and other equipment, and welded to the pipe. The size of the tail joint is consistent with the outer diameter and wall thickness of the corresponding pipe, which can be directly connected by weld neck flange.

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