In the last article,we introduced the working principle of the pressure vessel flange.Next step,we will introduce the factors that affect the sealing effect of the pressure vessel flange. 1.Bolt tension A proper preload can ensure that the sealing gasket can retain a certain sealing specific pre ...

Determination of flange yield strength For metal materials without obvious yield phenomenon, it is necessary to measure the specified non proportional extension strength or specified residual elongation stress, while for metal materials with obvious yield phenomenon, the yield strength, upper yi ...

Yield strength of flange It is the yield limit of metal material when yielding phenomenon occurs, that is, the stress resisting micro plastic deformation. For metal materials without obvious yield phenomenon, the stress value which produces 0.2% residual deformation is defined as its yield limit ...

Pressure vessel flanges are common and basic components that connect various parts of pressure vessel. They are widely used in petrochemical, electric power, atomic power, and other industries. For vessels, the function of flanges, gaskets, connecting bolts, studs, screws is to combine different ...

The sealing problem of plate flange is always a hot issue related to the production cost or economic benefit of enterprises, so the sealing principle of plate flange has been improved.However, the main design shortcoming of plate flange is that it cannot prevent leakage.This is a design flaw: th ...

The isolation gasket kit is consist of insulating gasket, insulation sleeve,plated steel washers and insulating washers. These components are manufactured in special materials with proper chemical stability, low water absorption, and dielectric properties,that is to prevent the corrosion of flan ...

Gaskets must maintain a seal for an acceptable period against all the operational forces involved. To achieve this, there are eight important properties which any gasket material must possess these properties. Metallic gaskets 1.Impermeability The gasket should not be porous to the fluid being s ...

There are many kinds of gaskets, which can be divided into three categories: nonmetal gasket, semi metal gasket and metal gasket. Asbestos rubber gaskets Non metallic gasket The non-metallic gasket is soft, corrosion-resistant and cheap, but it has poor resistance to temperature and pressure. It ...

Threaded flange is to process the inner hole of flange into pipe thread. The connection mode of flange and pipeline is not welding, but thread connection, that is, turning thread for flange inner hole, turning corresponding thread for pipe on pipe, and then matching connection. The thread of thr ...

Last article we know the single layer welding of butt welding flange, today let’s see what’s multi layer welding of butt welding flange. When the butt welding flange is thick, multi-layer welding is required. When there is no backing plate, the first pass is similar to single side we ...

Because the butt welding flange is in an unnatural position, it is difficult to operate stably. At the same time, heavy welding torch and cable should be lifted to increase the difficulty of operation. In addition, the molten iron in the molten pool is easy to sag during overhead welding, which ...

Flange types As already described before, the most used flange types ASME B16.5 are: Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange. Below you will find a short description and definition of each type, completed with an detailed image. Most common flange types Types of ...