Flat Welding Flange for Pipe Connection

Flat Welding Flange

Flat welding flange, plate flat welding flange, flat flange is a general term, sometimes for convenience is also called flat. It is different from Butt Welding Flange, which includes Welding Neck Flange and Slip On Flange. In chemical industry flange, mechanical flange, Japanese standard flange, German standard flange, American standard flange, Marine flange and other standards have this. In the domestic industry on the general pipeline consumption is the most, the pressure from 0.25MPa to 4.0MPa.

Plat Flange CS ss rf ff

Steel Flat welded flange, as the name suggests, is a Steel Flange without a neck. Insert the pipe directly into the flange for welding. In general, the inner diameter of the small-caliber flange is slightly larger than the pipe by 1-1.5mm to leave such a margin, in order to make appropriate adjustments in the installation process. The large flange should be kept more, because the flange is of large caliber, so it is inconvenient to keep it small.

Slip on Flange Pipe Fitting

The sealing surface of flat welding flange is generally divided into two kinds: one is called FF surface, that is, the full plane flange, so to say, the flange is like a disk, there is a hole in the middle and then play the corresponding bolt hole around, this is called the full plane flange.

There is also a sealed step, colloquially, is a flange out of a platform, called the waterline. Two or three waterlines are then drawn on the top by a lathe. This is called a flat flange. This waterline serves as a seal by placing the gasket between two flanges and securing it with bolts.

​Flat Welding Flange for Pipe Connection

Flat Welding Flange for Pipe Connection