Difference analysis between butt welding flange and special-shaped flange

Difference analysis between butt welding flange and special-shaped flange The sealing surface of butt welding flange can be made into three types: smooth type, concave-convex type and tongue-and-groove type. The application of smooth butt welding flange is large. Generally, it is mostly used when the medium conditions are relatively moderate, such as low-pressure unpurified compressed air and low-pressure circulating water. Its advantage is that the price is relatively cheap. Butt welding flanges are suitable for pipelines with large fluctuations in pressure or temperature or pipelines with high temperature, high pressure and low temperature, and are also used for pipelines that transport expensive, flammable and explosive media. The welding method used when connecting the flange and the pipeline of the butt welding flange is butt welding. The welding seam is similar to the welding of pipelines and pipelines. Generally, argon arc welding is used for the bottom of the small pipe diameter, and the cover surface is manually welded. Only use double-sided welding.

Matters needing attention when processing large diameter flanges

Matters needing attention when processing large diameter flanges When processing large-diameter flanges, we must first understand that such a component itself may have certain defects in the welding process. If the welding defects of stainless steel flanges are serious, they are basically Manual grinding is used for grinding. This grinding method is used to make up for it. Relatively speaking, a series of grinding marks may be produced, which may cause uneven surface more or less, which directly affects the entire equipment. Beautiful!

Structural classification of stainless steel flanges

Structural classification of stainless steel flanges 1. Smooth type: used for stainless steel valves with low pressure. It is more convenient to process; 2. Concave-convex type: high working pressure, medium-hard washers can be used...

Stainless steel flanges have excellent corrosion resistance

Stainless steel flanges have excellent corrosion resistance: The thin and strong oxide film on the surface of the stainless steel flange makes the stainless steel have excellent corrosion resistance in all water quality, even if it is buried in the ground. Therefore, it is suitable for all kinds of water quality, except for disinfection and sterilization, it does not need to control the water quality. At the same time, there is no corrosion and excessive exudate, which can keep the water quality pure and hygienic, prevent secondary pollution, and can withstand the impact of high water flow up to 30 meters per second.

Structural shape classification of stainless steel flanges

The structural shapes of stainless steel flanges are classified as follows: 1. Smooth type: for stainless steel valves with low pressure, it is more convenient to process. 2. Concave-convex type: The working pressure is high, and medium-hard washers can be used...

What are the quality requirements for stainless steel flange connections

The quality requirements of stainless steel flange connection are as follows: The selection of stainless steel flanges must meet the design requirements. When there is no design requirement, the flange of appropriate form and specification should be comprehensively selected according to the factors such as the maximum working pressure, maximum working temperature, working medium, and material grade of the flange. The flange must be visually inspected before installation. The surface should be smooth, and there should be no defects such as blisters, cracks, spots, burrs that reduce the strength of the flange, and there should be no penetrating scratches on the sealing surface that affect the sealing.