Carbon Steel Flange Bushing

They are: Class 150; Class 300; Class 600; Class 900; Class 1500; Class 2500

Another meaning of carbon steel flange is: According to the national standard requirements of the size, tolerance range and other production flanges, different from the production of flanges not according to the standard size is also called two standard flanges (some people called non-standard flanges is incorrect), usually some unprofitable businesses will reduce the thickness of the flanges, two dimensions of the outer diameter to achieve the purpose of saving materials, and waste steel or scrap steel processing flanges, Usually, this steel is a waste of chemical composition and mechanical properties that are not up to standard, and there are even more flanges produced by private steel mills. The old steelmaking technology used in this kind of private steel can not guarantee mechanical properties and welding performance, and may not be able to weld with steel pipes when used, or the steel itself has cracks, pores and other welding will also leak after welding. So when buying flanges, try to choose carbon steel flanges.