Flange is a part that connects shafts to each other. It is used for the connection between pipe ends. It is also used as a flange on the inlet and outlet of equipment. It is used for the connection between two equipment, such as a reducer flange. It is called flange flange disk or flange.
Pipe flange refers to the flange used for piping in the pipeline device, and when used on equipment, refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into threaded connection (threaded connection) flange, welding flange and clamping flange. Flanges are always used in pairs, low-pressure pipelines can use wire flanges, and welding flanges can be used with pressures above four kilograms.
So flanged fittings are widely used in industry.There are many types of flanged fittings based on flange material and so on.
Ordinary material of flanged fittings
Flanges commonly used materials are: forged steel, WCB carbon steel, stainless steel, ductile iron, 316L, 316, 304L, 304, 321, chrome-molybdenum steel, chrome-molybdenum-vanadium steel, molybdenum-di-titanium, lined with rubber, lined with fluorine material.
The advantages of flanged ductile iron fittings include easy installation, good sealing, high temperature resistance, corrosion resistance, wear resistance and so on, so it is widely used in petroleum, chemical, natural gas, paper making, water treatment and other fields.
A flange adapter is a common type of flanged ductile iron fitting, it is a coupling used to connect pipes or equipment with different types or sizes of flanges. The main difference between a flange adapter and a short-end fitting is their length. Cast iron flange adaptors are longer and can be clamped in a fusion fitting like a pipe end to make the connection. The stem ends are shorter adaptors which are not long enough to be connected to fusion welding equipment.
What is a pipe coupling?
In piping and plumbing, a coupling (or coupler) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (steel), brazed or soldered (copper, brass etc.) together.If the two ends of a coupling are of different standards or joining methods, the coupling is called an adapter.A coupling whose ends use the same connection method but are of different sizes is called a reducing coupling or reducer.
Types of pipe couplings
- Rigid coupling.
- Flexible shaft coupling .
- Sleeve coupling.
- Split muff coupling.
- Flange coupling.
- Gear coupling.
Among all these types of couplings the rigid coupling and flexible shaft coupling are applied the most.
Definition and characteristics of rigid coupling types
A rigid coupling type is a joint that connects two components with high strength and stability. Its main characteristics include:
1. high strength and high withstanding moment.
2. high stiffness and good resistance to deformation.
3. not easy to loosen, good stability.
Definition and characteristics of flexible shaft coupling types
Flexible shaft coupling types is a kind of connector, used to connect two parts, has good plasticity and bendability, and can be freely bent within a certain range to achieve relative motion between parts. Its main features include:
1. good plasticity and flexibility, able to adapt to different movements and vibrations.
2. It can be flexibly twisted and is suitable for occasions with complicated installation environment.
3. simple and reliable, low maintenance cost.
The scope of application of rigid coupling types and flexible shaft coupling types
1. Rigid coupling types are suitable for occasions requiring high strength, high stiffness and stability, such as bridges and building connections;
2. Flexible shaft coupling types are suitable for occasions requiring certain bending or relative displacement, such as automobile exhaust pipes, cable transmission lines and so on.
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