Pipe Welding

Welding refers to a processing method in which weldments are combined by heating or pressing. According to the different welding processes, welding methods can be divided into three categories: pressure welding, fusion welding and brazing. Among them, arc welding is the most common application in fusion welding.

Fusion welding: a welding method that melts the base metal at the place to be welded, but does not apply pressure to form a weld.

Pressure welding: During the welding process, pressure (heated or not) must be applied to the weldment to complete the welding method, including solid state welding, hot pressure welding, forging welding, diffusion welding, air pressure welding and cold pressure welding.

Brazing: use a metal material with a lower melting point than the base material as the brazing filler metal, heat the weldment and brazing filler metal to a temperature higher than the melting point of the brazing filler metal but lower than the base metal melting point, and use the liquid brazing filler material to wet the base metal to fill the joints The method of connecting weldments by mutual diffusion with the base material. According to the different solders used, it can be divided into two types: brazing and soft soldering.