Corrugated Pipe Fittings

Corrugated pipe fittings are mainly used to connect, turn, branch or end corrugated pipe systems. Common types of corrugated pipe fittings include the following

1. Straight Coupling

Straight corrugated pipe couplings are used to connect two sections of corrugated pipe to ensure that the two pipes are connected straight. It is usually a corrugated pipe fitting with two same inner diameters, plug-in connection design, and has good sealing performance.

2. Elbow

Elbows are used to change the direction of corrugated pipe. Common elbow angles are 45 degrees, 90 degrees, etc. The design of the elbow can help the corrugated pipe adapt to different spaces or paths during installation.

3. Tee

Tee is used to divide the corrugated pipe into three ways, which is common in pipeline systems that need to be diverted. It has a main pipe and two branches, and is often used for liquid or gas diversion.

4. Reducer

Reducers are used to connect corrugated pipe of different diameters, usually used to connect the transition between large-diameter corrugated pipe and small-diameter corrugated pipe. It can be a type with a reduced outer diameter or a reduced inner diameter.

5. Flange

Flange is used to connect corrugated pipe and other equipment or piping systems. The corrugated pipe is connected to the equipment flange or other pipe flange through the flange, and is often used in industrial piping systems. Flange connection can provide stronger sealing and higher pressure resistance.

6. Flexible Coupling

Flexible couplings are mainly used to connect two sections of corrugated pipe and allow a certain displacement or expansion. They are suitable for occasions where shock absorption or compensation of pipe displacement is required, especially in high or low temperature environments.

7. Right Angle Connector

Right angle connectors are used to connect two sections of corrugated pipe and play a 90-degree turn in the piping system. Similar to elbows, but this type of connector is often used for specific corner connections.

8. Insert Coupling

Insert couplings are a simple connection method, usually inserted into the pipe mouth and ensure the sealing between the pipe mouths through sealing rings or other methods. They are suitable for low-pressure and low-flow systems.

9. Clamp Fitting

Clamp fittings use metal clamps to fasten corrugated pipe, and are often used for temporary connections or occasions where disassembly is convenient. This type of connection is often used for short-term projects, maintenance, and other purposes.

10. Union

Unions are a type of connector that is easy to disassemble and install, and are usually used in pipeline systems that require regular inspection or replacement. It connects two sections of corrugated pipe together by means of threads or snaps, and does not require the pipe to be completely disconnected when disassembled.

11. End Cap

End caps are used to close the ends of corrugated pipe, and are usually used to close or protect the ends of pipes. They can be fixed or removable, depending on the requirements of the system.

How to connect corrugated pipe and corrugated pipe fittings？

The method of connecting corrugated pipe fittings to corrugated pipe depends on the material of the corrugated pipe, the application scenario, and the type of fittings selected. Common connection methods include the following:

1. Push-Fit

Push-Fit is the most common connection method, suitable for most corrugated pipe and corrugated pipe fittings, especially flexible corrugated pipe. This method is easy to operate, does not require additional tools, and is suitable for low-pressure and low-temperature environments.

Steps

①. Insert the mouth of the corrugated pipe into the interface of the connector (such as straight-through connector, elbow, etc.).

②. Make sure the mouth of the pipe is inserted into the connector to a sufficient depth until it is completely sealed.

③. If the connector has a sealing ring, check whether the sealing ring is in place to ensure a tight connection.

Applicable scenarios: Low-pressure or household/industrial piping systems.

2. Threaded Connection

For some connections that require more tightening, corrugated pipe and corrugated pipe fittings can also be threaded. Threaded connections are commonly used for metal corrugated pipe or corrugated pipe with threaded interfaces.

Steps

①. Connect the connector of the corrugated pipe to the threaded part of the fitting.

②. Tighten with a wrench to ensure that the threaded connection is tight and sealed.

③. Use sealant or raw tape (such as PTFE tape) on the threads to enhance the sealing performance and prevent water or air leakage.

Applicable scenarios: High pressure, high temperature environment or metal corrugated pipe connection.

3. Hose Clamp

Hose Clamp is used to connect flexible corrugated pipe and pipe fittings, especially in some occasions where temporary or detachable connection is required. The clamp is usually made of stainless steel and can effectively fix the connection part.

Steps

①. Insert the mouth of the corrugated pipe into the connection part of the pipe fitting.

②. Use the clamp to surround the connection between the mouth and the pipe fitting.

③. Use a screwdriver or special tool to tighten the clamp to ensure a firm connection.

Applicable scenarios: Applicable to low-pressure systems, especially in occasions that require regular disassembly or maintenance.

4. Welding

For some metal corrugated pipe or pipe fittings of specific materials, welding connection is a permanent connection method. By welding the corrugated pipe port and the pipe fitting together, the high strength and sealing of the joint can be ensured.

Steps

①. Clean and prepare the corrugated pipe and pipe fitting ports.

②. Use a suitable welding method (such as arc welding, argon arc welding, etc.) to weld the corrugated pipe and pipe fittings corrugated pipe coupling together.

③. Check the welding area to ensure that the weld is dense and free of cracks or pores.

Applicable scenarios: High temperature, high pressure environment, or pipeline systems that require high strength and long-term stability.

5. Flange connection

Flange connection is a common pipeline connection method, especially in industrial pipelines. Flange connection is suitable for occasions that require high sealing and withstand high pressure.

Steps

①. Butt the end of the corrugated pipe with the flange pipe fitting.

②. Use bolts to fix the flange at both ends of the pipe.

③. Add gaskets to ensure sealing, tighten the bolts, and make the flange connection firm.

Applicable scenarios: Industrial pipeline systems with high pressure, chemical corrosion, or need to be disassembled.

6. Gasket Sealing

Gasket connection is often used at the sealing interface between corrugated pipe and pipe fittings, especially when it comes to liquid transportation. This connection method can effectively prevent leakage.

Steps

①. Insert the corrugated pipe into the connector and make sure the contact surface is clean.

②. Place the seal at the connection interface.

③. Use a clamp, thread or other fixing device to connect the pipe and the corrugated pipe together, and ensure that the seal is tightly compressed.

Applicable scenarios: Liquid or gas delivery pipelines, especially where leakage needs to be prevented.

7. Quick Connect

Quick connectors are often used in pipe systems that require frequent disassembly and installation. It is a very convenient connection method, usually suitable for small-diameter corrugated pipe, commonly found in irrigation or household drainage systems.

Steps

①. Insert the corrugated pipe into the interface of the quick connector.

②. Depending on the type of connector, you may need to press a button, rotate or insert it directly.

③. Make sure the connector is fully clamped to prevent water leakage.

Applicable scenarios: irrigation systems, household drainage systems, low-pressure environments.

8. Flexible Coupling

Flexible corrugated pipe couplings are used to connect corrugated pipe and other pipe systems, especially when certain displacement compensation or shock absorption is required. It has a certain elasticity and can absorb the thermal expansion and contraction of the pipeline system.

Steps

①. Insert the port of the corrugated pipe into both ends of the flexible joint.

②. Use bolts or clamps to fix the flexible joint to the corrugated pipe and pipe fittings.

③. Make sure there is no water or air leakage at the connection.

Applicable scenarios: shock absorption system, thermal expansion compensation, low-pressure pipeline connection.