In the chemical industry, you can not underestimate the flange, which is indispensable and plays a big role. Follow me to unlock the flange mystery and after reading, you can know all the basis of flanges, including meaning, types, advantages, purposes and purchase.

Table of Contents

• PART 1. What Is Flange?
• PART 2. Types of Flanges & Their Pros and Cons
• PART 3. Why Choose WH-Steel to Buy Desired Flanges?

PART 1. What Is a Flange?

Flange, also known as flange convex disk or convex disk, is a disk-shaped part, usually used in pairs. Mainly used for connecting pipelines and valves, pipelines, and equipment connected to each other to play a sealing role in the parts. To put it simply, the two planes are connected with bolts between the two planes, there is a sealing function of the connecting part is called a flange.

Flanges are mainly made of carbon steel, stainless steel and alloy steel, etc. Due to their important role and good overall performance, they are widely used in chemical, petrochemical, fire fighting and drainage industries.

PART 2. Types of Flanges and Their Pros and Cons

There are many types of flanges which you need to differentiate their classification in different dimensions. To make it easier, this part will only tell you the common 5 kinds of flanges classified according to the connection way.
1. Integral Flange: Generally used in pipelines with higher pressure, is a flange connection method, and all have a long neck, more than once the whole casting molding, and the materials used are generally carbon steel, stainless steel and so on.
2. Flat welding flange, also known as tower welding flange: when it is welded when connected with the container or pipeline, this kind of flat welding flange has the characteristics of easy assembly and cheap price, mainly used in the pipeline with relatively small pressure and vibration.
3. Lap-Joint Flanges are also known as high neck flanges: the biggest difference between butt-welding flanges and other flanges is that it has a prominent high neck. The wall thickness of the protruding high neck will gradually be the same as the thickness and diameter of the highly butted pipe wall, which will increase the strength of the flanges.Butt-welding flanges are mainly used in places where the environment varies a lot, such as high temperature, high pressure and low temperature pipelines.

4. Slip-on Flanges, mostly used in some non-ferrous metal and stainless steel pipeline, the connection is also realized by welding, because it can be rotated, easy to align with the bolt holes, so it is mostly used in the large diameter pipeline that often need to be disassembled and often need to be disassembled at the connection, but the loose set flange has low pressure resistance, and can only be used for the connection of the low-pressure pipeline.
5. Threaded flanges have threads inside the flange, which requires that the pipes connected inside also have external threads to realize the connection. It is a non-welded flange, so it has the advantage of easy installation and disassembly compared with other welded flanges. Threaded flanges are not suitable for use in extremely high or low temperature environments, because the threads are susceptible to pipeline leakage after thermal expansion and contraction.

PART 3. Why Choose WH-Steel to Buy Desired Flanges?

Specializing in the pipeline industry for more than 20 years, WH-STEEL has a wealth of experience for customers in the biological chemical industry. Moreover, we promise the quotation within 24 hours, order tracking system and 90% on time delivery rate. More importantly, WH-STEEL has its own manufacturing base to produce common flanges. If you have any special quality control or size requirement, WH-STEEL can be tailored for you. Hurry to contact us~