In pipeline engineering installation, flanges are mainly suitable for pipeline connection. In the need to connect the pipeline, all kinds of machinery and equipment a flange, the low pressure pipeline can use wire flange, two flanges in the middle of the sealing point, and then tighten the foot bolt.
Characteristics of butt welded flange
Flanges with different pressures have different thicknesses and use different anchor bolts. Water pumps and valves, when connected with pipelines, parts of such devices and machines are also made into corresponding flange styles, also known as flange connections.
As long as the connecting parts are connected together with anchor bolts in the surrounding areas of the two plans, they are usually called “flanges”, such as the connection of ventilation pipes, this type of part can be called “flanged parts”.
However, this connection is only a part of the machine equipment, such as the connection of the flange and the pump, it is not good to call the pump “flange parts”. Relatively small such as valves, etc., can be called “flange parts”.
Butt welded flange is one of the most demanding flange products in the market. High pressure butt welding flange usually pressure level in the middle of 0.5 mpa -50 mpa, the structure of high pressure butt welding flange is divided into unit flange, whole flange, and insulation flange, according to the style of the flange surface can be divided into flange sealing surface: plan, concave, concave, tenon surface, ring connection surface.
The sealing of the butt welded flange is reliable, the function is high quality, and the appearance is good. Welding flange has the advantages of wear-resisting, heat resistance, corrosion resistance, abrasion resistance, long service life and so on
In view of the common impact strength function is significantly improved compared to the rest of the solid wall tube, its ring stiffness is equivalent to 1.2 times that of the solid wall tube. Under the additional use temperature and pressure, the service life of the pipe can be more than 50 years, with anti-ultraviolet light and anti-radiation, so that the product will never fade
What are the technical requirements of flange manufacturing
When manufacturing and manufacturing welded flanges, certain performance parameters and regulations should be selected for manufacturing and application to ensure that certain methods and fundamentals as well as certain processing methods and fundamentals can be applied and marketed. Are selected for manufacturing and welding, strictly ensure the excellent quality in the application.
The tilt of both sides of the head and neck of the butt welded flange must not exceed 7°. The performance parameters of butt flanges are strictly controlled during manufacturing and welding to ensure that efficiency and use value are fully utilized in manufacturing and application.
