DIN plate flange
DIN plate flange is a common flange with the pressure of PN2.5, PN6, PN10, PN16, PN25. It is mainly used for low-pressure pipeline connection. It is easy to obtain materials, simple to manufacture, low cost and widely used, but its rigidity is poor. Therefore, it should not be used in chemical process piping systems with requirements of supply and demand, flammability, explosion and high vacuum, and in situations of high and extreme hazards. The type of sealing surface has a plane and protruding surface. Flat welded flanges have the following types of sealing surfaces: concave and convex surface (MFM), tenon and groove surface (TG), full plane (FF).
Specification of DIN plate flange
Diameter: DN25-DN5400
Pressure PN0.25-PN42
Main materials: carbon steel, low temperature steel, alloy steel, stainless steel, duplex stainless steel, special steel, etc.
Packaging: Fumigation-free wooden cases, pallets can be packed according to customer requirements.
Product Price: As the product price changes frequently, you can consult us through our website.
Flange Supply Scope: Petroleum, Power Plant, Chemical Industry, Natural Gas, Fire Protection, Tap Water, Sewage Pipeline, Steel Works, Shipyard.
Quality Inspection Content of DIN Plate Flange
If the quality of DIN plate flange is defective, it may affect the processing quality or processing quality of subsequent processes.Heavy can even affect the performance and use of forgings, and reduce the service life of finished flanges. In order to ensure or improve the plate flat welding method. The quality of blue forgings should not only be controlled in process, but also be prevented from forming defects.And quality inspection should be carried out to prevent defects in forgings that affect the subsequent process or performance.
1. Check whether the shape and geometric size of forgings meet the requirements.
2. Check the surface of forgings for cracks, orange peel, scratches, bubbles and other defects.
4. Check internal defects of forgings, such as mechanical properties of forgings, chemical composition analysis of important parts, etc.
5. The methods of low-magnification inspection, fracture inspection and high-magnification inspection are used to check whether there are internal cracks, looseness, coarse grains and other defects in forgings.
6. Mechanical properties mainly check the tensile strength, hardness and fatigue strength at room temperature. Whether it is the forging of flat welded flange or the forging of other products, the quality inspection can not be separated from these two categories.
The main role of DIN plate flange
1. Connect the pipeline and keep the pipeline in good sealing performance.
2. If there is a problem in a certain section of pipeline, it is convenient to replace a certain section of pipeline.
3. Pipeline failure, easy to dismantle and detect.
The Usage Characteristics of DIN Plate Flange
1. Plate flange not only saves space and reduces weight, but also ensures that the joint does not leak and has good sealing performance. The reason why the size of compact flange decreases is that the diameter of the seal is reduced, which will reduce the cross section of the sealing surface.
2. Suitable for connection of carbon steel pipes with nominal pressure not exceeding 2.5 MPa. Flat welded flange sealing surface can be made into smooth, concave-convex and mortise-groove three types. Smooth plate flange is the most widely used in mild medium conditions, such as low-pressure non-purified compressed air, low-pressure circulating water.
