Advantages and usage scenarios of plate flat welding flanges

What is a plate flat welding flange?

A plate flat welding flange is a pipe flange for connecting pipes. It adopts a flat welding structure and has good sealing and pressure bearing capacity. It is generally composed of two flanges and a sealing ring, and can connect pipes of the same diameter or pipes of different diameters.

How to represent plate flat-weld flanges:

The representation method of plate flat-weld flanges is generally the following four parts:

1. Flange name: usually marked as "flat-weld flange", "plate flange" or "flat flange".
2. Pipeline diameter: in millimeters (mm), indicating the inner diameter of the pipe connected by the flange.
3. Pressure level: in standard pressure unit MPa, indicating the pressure bearing capacity of the flange.
4. Material: usually expressed in English abbreviations, such as SS flange for stainless steel flange, CS flange for carbon steel flange, etc.

For example, if the flange name is flat welding flange, the pipe diameter is 65mm, the pressure level is 2.5MPa, and the material is stainless steel, it is expressed as "flat welding flange DN65 PN2.5 SS".

Advantages and usage scenarios of plate flat welding flange:

Features and advantages:

(1) Flat welding connection: Because it adopts flat welding connection, it is very convenient to install and disassemble, does not require professional skills, and is simple to operate.

(2) Good sealing: It uses a sealing ring as a seal, has good sealing performance, and can withstand high pressure.
(3) Strong adaptability: It is suitable for connecting pipes of different materials, different diameters, and different thicknesses, and has strong adaptability.
(4) Low cost: Compared with other flanges, plate flat welding flange has the advantages of low cost and easy installation, and is very suitable for small and medium-sized pipeline projects.
(5) Long service life: It is not easy to deform under high temperature and high pressure conditions, has a long service life, and is safe and reliable.
(6) Diverse materials: Plate flat welding flanges can use various materials such as carbon steel, stainless steel, alloy steel, etc., which can meet the requirements of various media.

Application scenarios:

Plate flat welding flanges are widely used in pipeline connections in the petrochemical, chemical, electric power, food, pharmaceutical and other industries. They are particularly suitable for pipeline connections under high temperature, high pressure, corrosive media and other working conditions. They can exert their excellent performance in plane connection and in situations that meet high temperature and high pressure requirements.

(1) Food processing, pharmaceutical and other industries.
(2) Water supply and drainage, HVAC, industrial water and other fields;
(3) Chemical, papermaking, metallurgy and other industrial fields.

Matters needing attention when using plate flat welding flanges:

1. Before installation, the quality of the flange and the sealing ring should be checked to ensure that there is no damage or deformation.
2. During the installation process, strong collision and deformation should be avoided as much as possible to avoid affecting the sealing.
3. During installation, attention should be paid to the centering of the flange and the pipe to ensure the flatness and tightness of the connection.
4. When using plate flat welding flanges with different pipe materials and pressure levels, the corresponding materials and pressure levels should be correctly selected.
5. When disassembling, attention should be paid to light disassembly and installation to prevent damage to the flange and sealing ring.

In short, plate flat welding flange is a commonly used pipe connection method with reliable sealing and strong pressure bearing capacity, but some installation and use matters need to be paid attention to during use.

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