Flange pipe fitting connection is a connection method in pipeline engineering.It is flexible, simple and practical.Temporary pipelines (including tunneling and foundation excavation) and tailings hydraulic transport pipelines in the construction site need flexible corners, and flange pipe fittings are widely used in these aspects.
 

Flange pipe fittings connection demand flange pipe fittings pipe.Flanged pipe fitting pipe is divided into fixed flanged pipe fitting pipe and loose sleeve flanged pipe fitting pipe.Fixed flange pipe fittings have higher requirements for the manufacture of flange pipe fittings, and the manufacturing process is more complex, the cost is high, the time cycle is long, and sometimes it is inconvenient to install in some parts.And loose flange pipe fittings pipe processing is simple, low cost, in any part of the installation can turn the flange pipe fittings view point, so the connection is more convenient.

There are two kinds of loose flanged pipe fittings: welded ring type and heated flanged type.Welding ring type flange pipe fittings pipe, the need to process the ring in the factory lathe, and then arc welding molding, not only the need for special processing equipment and long processing cycle, high cost.The heating flanged pipe has the advantages of loose flange pipe fittings. The processing process is simple, the processing time is short, the cost is low, and the processing site is good. It can be processed and formed on site, and the site adjustment of small viewpoint turning can be properly carried out together.Therefore, temporary pipeline and hydraulic tailings transport pressure pipeline are widely used in construction site.