Welding alloy flange, also known as high neck flange or large tail flange, is a type of pipe fitting that refers to a flange with a neck and a circular pipe transition, and is welded to the pipe Welding flanges are not easily deformed, have good sealing, and are widely used. Welding flanges are suitable for pipelines with significant pressure or temperature fluctuations, as well as high and low temperature pipelines with welding alloy flanges. Their advantage is that they are relatively inexpensive, with a nominal pressure of no more than 2.5MPa for welding alloy flanges; It is also used on pipelines for transporting expensive media, with a nominal pressure of around PN16MPa.

1. Overhauling is the process of forging the raw material along the axial direction to reduce its height and increase its cross-section. This process is commonly used for forging gear blanks and other disc-shaped forgings. There are two types of upsetting: full upsetting and partial upsetting.

2. Pulling and elongating is a forging process that increases the length of the billet and reduces its cross-section. It is usually used to produce shaft blanks, such as lathe spindles, connecting rods, etc.

3. Punching is a forging process in which a punch is used to punch through or through holes in a billet.

4. Bending is a forging process that bends the billet into a certain angle or shape.

5. The forging process of twisting a part of the billet to rotate a certain angle relative to another part.

6. Forging process of cutting and dividing billets or cutting off material heads.