Welding neck flange

Neck butt welding flange is a connecting piece on industrial pipelines, which is used as an accessory for connecting pipe ends. Stainless steel flanges are also called flange flanges or lugs. Stainless steel flanges are connected by flanges, gaskets and bolts as a removable connection of a group of combined sealing structures

Necked butt welding flange refers to the flange with neck and pipe transition and butt welding connection with pipe. Butt welding flange is applicable to pipelines with large fluctuation of pressure or temperature or pipelines with high temperature, high pressure and low temperature, as well as pipelines transporting expensive, flammable and explosive media. Butt welding flange is not easy to deform, has good sealing, and is widely used. The nominal pressure PN is about 16MPa. The butt joint size of flange plate changes with the nominal pressure, which causes that the equal diameter flange plate is often unable to butt joint. It is very troublesome to order, manufacture, store, transport, install, repair, maintain and other practical work. For 0.25 and 0.6 MPa flange plates, 1.0 MPa butt joint size is used, and the thickness is still the original three specifications, so as to simplify the butt joint size

The pressure grade, material, standard, etc. of butt welding flange have different characteristics and characteristics. They are used according to the determined principles, methods and methods, and can be produced and processed according to the corresponding standards. The protection has good use value and role in use. Butt welding flange pressure rating: 0.6Mpa~32Mpa (150Lb~2500Lb),

Material: 20 #, 20G, 16Mn, 16MnR, 106B, St45.8 WB36 201.202.301.302.304L.309S.310S, 316.316L.317.317L.321.410.420, etc.