What is a flange joint? How to classify?

Are you looking for flange joints for business or installation in pipeline systems? As a supplier of pipe fittings, Bao Tin Steel will answer what flange joints are. technical specifications, structure, classification, and quote them.

What is a flange joint?

Flange joints are accessories that connect pipes or pumps, valves, etc. by flange installation. In addition to connection, this type of joint also has the function of anti-vibration or absorbing thermal expansion.

Although it is just a small pipe fitting, flange joints play an important role in the pipeline system. Without this device, connecting pipes, valves, etc. will become difficult and prone to problems causing damage due to pressure or vibration.

General specifications of flanged joints

• Connection type: Flange
• Flange material: steel, stainless steel,
• Size: DN40-DN450
• Connection standard: JIS 10K/16K flange, BS PN10/PN16, ANSI class 150, 300, DIN,.
• Working pressure: PN10, PN16,.
• Origin: Vietnam, China, Taiwan, Korea, Japan,
• Material: rubber, stainless steel,
• Working environment: water, gasoline, wastewater,.

Structure of flanged joints

Flange joints have a not-too-complicated structure. It consists of parts such as the joint body and the connection part. The main function of each of these parts is specifically:

• The connecting body is the part that directly contacts the conductive medium of the pipeline. The joint body is made of synthetic rubber or stainless steel with the task of expanding and anti-vibration.

   

• Connecting part: This part has the form of a flange connection or thread connection; it is usually made of steel or stainless steel material regardless of the type of joint.

Advantages of flanged joints

Each type of accessory has its advantages and disadvantages, and so do flanged fittings. So what are the advantages of flanged fittings?

• Increase the elasticity and flexibility of the pump and pipeline.
• Impact resistance
• Reduces pipeline vibration
• High-pressure resistance
• Effective corrosion resistance
• Flexibility
• Coupling length depends on usage requirements.
• Thanks to the design of the coupling, fluid circulation is easier and more convenient.
• With the flange design, it is convenient for installation, maintenance, and replacement.
• Significantly reduces damage due to temperature changes and vibration

These advantages make flanged joints an effective and flexible solution in many different applications.

Flange Joint Classification

Currently, there are many types of flange joints on the market; they are classified in many ways. For example: by function, by material,… If you search for the question “types of flange joints” on Google, there will be a lot of information. Understanding this problem, below Bao Tin Steel will introduce to you the commonly used flange joint products today. In particular, these joints are being distributed at Bao Tin Steel.

Rubber expansion joint

Rubber Expansion joints, also known as anti-vibration joints, are flange soft joints made from rubber interwoven with a layer of steel fabric inside to increase the strength and elasticity of the joint. Flange rubber soft joints are often installed between pipes, in front of places with a lot of vibration, such as in front of pumps or fixed pipes that are too long.

Technical specifications of flanged rubber expansion joint

• Size: DN40-DN400
• Material: EPDM rubber body, galvanized steel flange, or 304 or 316 stainless steel flange. Currently, commonly used types of flange rubber joints are steel flange rubber expansion joints, stainless steel flange rubber expansion joints (stainless steel flange rubber expansion joints),
• Working pressure: Max 16 bar
• Connection: Flange standard JIS 10K, BS PN10, VS PN16, DIN, ANSI class 150, 300,
• Environment: water, wastewater, seawater,

You can refer to the image below to better understand the technical specifications of JIS 10K rubber expansion joints:

Stainless steel flange expansion joint

Stainless steel flange expansion joints (flange expansion joints or thermal expansion compensation pipes) are flange expansion joints made from stainless steel/stainless steel (SUS304, 316,…). Compared to rubber expansion joints, stainless steel expansion joints have less expansion capacity. However, this device can withstand force and corrosion well, making it suitable for pipeline systems that have to withstand high pressure..

Technical specifications of stainless steel expansion joints

• Size: DN40-DN400
• Body material: stainless steel 304, 316,
• Origin: Vietnam, China, Taiwan,.
• Connection: Flange standard JIS 10K, BS PN10, BS PN16, DIN, ANSI class 150, 300,
• Length can be processed according to customer requirements.

Flange coupling

Flange Coupling is a coupling product designed to align the shaft and maintain a connection. With the flange located on 2 sleeves, the number of bolt holes on the two flanges is equal to the number of bolts to attach the bolts. This type of coupling is commonly used for heavy loads.

Flange coupling plays an important role in supporting the transmission of motion from one part to another. In addition, they also have the function of preventing overload and reducing dynamic loads.

Flange quick coupling

Flange quick couplings are tools used to connect construction systems or industrial machinery such as pump crane shafts, hydraulic pipeline systems, pipes, engines, etc. in the most accurate and fastest way.

Among the types of flange quick couplings, stainless steel flange quick couplings are commonly used. This is a quick coupling made of stainless steel (stainless steel) with one flange end and one quick connection end. They have various sizes: DN15 – DN100

Some popular stainless steel flange quick couplings today: type F, C.

Below is a specific illustration:

The flange quick coupling position can be used in applications such as wastewater treatment plant systems, domestic water pipes, agricultural irrigation pipes, water tanker systems, gasoline and oil pipes, etc.

By now, you probably know how many common types of flange joints there are, right? However, one of the issues you need to pay attention to is the installation method. To better understand this information, you can refer to the article on how to properly install flanges.

Flange coupling quotation

Currently, Bao Tin Steel specializes in providing all kinds of flanged motor couplings, shaft and flange couplings, flexible couplings, etc. originating from Taiwan, Korea, China, etc. All products are genuine, with diverse designs, competitive prices, prestige, and quality. Flanged rubber expansion joints are a type of flexible coupling commonly used today.

The demand for this type of equipment is also very large. Therefore, Bao Tin Steel will provide information on the price of flanged rubber expansion joints for everyone. Accordingly, this price also varies depending on the standard as well as the size (the table will be specified). In addition, the price also varies due to the material, brand, and market situation.

Note: Below is only the reference price of flange rubber expansion joints. Prices may change from time to time. Therefore, if you want to know the latest and most accurate price, please call us via Hotline: 0932 059 176 or fill out the form below:

Where to buy genuine flange joints at good prices?

Tiger Steel is a branch of Bao Tin Steel.