Pipe fittings play an important role in the connection

　　Carbon steel pipe fittings are also called pressure pipe fittings. It is usually divided into three types: butt class pipe fittings, socket welded pipe fittings and threaded pipe fittings. In pipe joints system, you need various sizes of steel pipe fittings due to the different pipe sizes. For instance, you have to connect to a straight tube or tube section, the threaded pipe fitting is necessary. After the deep process of finished steel pipe, any pipe should belong to the scope of the steel pipe fittings, because it has double characteristics of the tubes and mechanical elements.

　　The sides of the steel pipe are painted to be guaranteed as the fittings or oxidation resistant metal like zinc or nickel with electroplating. But it is well-known that the out layer of steel tube is just a thin film that is easy to be damaged. Once the protective layer is damaged, the steel tubes start to rust in the atmosphere. So the preservative is necessary for the carbon steel tube depending on the zinc, nickel and chromium as protective layer.

　　We have adopted advanced production equipment and technologies to manufacture our ANSI 900LB BLIND FLANGES and GB/T 9119 PN1.6 plate flange,which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.