The use of flanges in petroleum and industry is still very common, and you can see the application of butt welded flanges in various fields of industry. However, the use of butt welded flanges requires many precautions, which need to be taken into account. So, what are the fundamental considerations when using butt welded flanges?
There are two types of butt welding flange specifications used in petroleum and chemical industries, one is the pressure vessel butt welding flange specification, and the other is the pipe butt welding flange specification. Both flat welding and butt welding have two types of flanges: those with lining rings and those without lining rings. When the equipment is made of stainless steel, using carbon steel butt welded flange 7 with stainless steel lining ring can save stainless steel.
When using the butt welding flange specification to determine the size of the butt welding flange, it is necessary to know the nominal diameter and nominal pressure of the butt welding flange. The nominal diameter of the welded flange of the pressure vessel is taken from the same series of values as the nominal diameter of the pressure vessel. For example, DN1000mm pressure vessels should be equipped with DN1000mm pressure vessel butt welding flanges.
There are two types of butt welding flange specifications used in French petroleum and chemical industries. One is the pressure vessel butt welding flange specification, and the other is the pipe butt welding flange specification. Both flat welding and butt welding flanges have two types: those with lining rings and those without lining rings. When the equipment is made of stainless steel, using carbon steel butt welded flange 7 with stainless steel lining ring can save stainless steel.
When using the butt welding flange specification to determine the size of the butt welding flange, it is necessary to know the nominal diameter and nominal pressure of the butt welding flange. The nominal diameter of the welded flange of the pressure vessel is taken from the same series of values as the nominal diameter of the pressure vessel. For example, DN1000mm pressure vessels should be equipped with DN1000mm pressure vessel butt welding flanges.
