What is the difference in the installation method between corrugated pipes and welded corrugated pipes?

Corrugated pipe is a type of pipeline connector used for conveying fluid media such as liquids and gases. Its main function is to bear the thermal expansion, contraction, and bending deformation of the pipeline through the deformation of the corrugation, thereby reducing the stress of the pipeline system. The installation method of corrugated pipes can be various depending on specific requirements, with two common types: flange connection and welding connection.

Installation method of flange connection for corrugated pipes

The flange connection of corrugated pipe is a installation method that connects the two ends of the corrugated pipe to the flange joint of the pipeline system using flanges and bolts. The main steps are as follows:

(1) Choose the appropriate flange connector. Select suitable flange connectors, including flanges, bolts, gaskets, etc., based on the working conditions of the pipeline system.

(2) Prepare installation tools and materials. Prepare the necessary tools and materials for flange connection, such as hammers, wrenches, bolts, etc.

(3) Install corrugated pipes. Install gaskets and bellows on the flange, keeping both ends of the bellows parallel to the flange connection surface.

(4) Connect the flange. Align the flange of the installed corrugated pipe with the flange connection surface of the pipeline system, then fix the flange with bolts and tighten the bolts one by one.

(5) Check the connection. After tightening the bolts, check whether the connection between the corrugated pipe and the flange is tight and whether there is any air or water leakage.

(6) Perform leak testing. Perform a leak test on the connected bellows to ensure good sealing and no leakage at the connection.

Welding connection and installation method of corrugated pipes

The welding connection of corrugated pipes is an installation method that connects the two ends of corrugated pipes in a pipeline system by welding. The main steps are as follows:

(1) Preparation work. Collect and prepare the necessary tools and materials for welding, including welding machines, welding rods, welding masks, etc.

(2) Clean the surface. Clean the welding surfaces at both ends of the corrugated pipe to remove impurities and dirt, ensuring that the welding surfaces are clean.

(3) Welding preparation. Load the welding rod into the welding machine and adjust the parameters such as welding current and welding time.

(4) Welding corrugated pipes. Align the two ends of the corrugated pipe with the parts that need to be connected in the pipeline system, and then weld them using a welding machine. When welding, it is necessary to control the welding current and welding time to ensure welding quality.

(5) Check welding. After welding is completed, inspect the welded joints to ensure that they are even, firm, and free from cracks, leaks, and other issues.

(6) Perform leak testing. Perform a leak test on the welded corrugated pipe to ensure good sealing and no leakage at the welded joint.

In summary, the welding connection of corrugated pipes is to connect the two ends of the corrugated pipe to the pipeline system by welding, while flange connection is to connect the corrugated pipe to the flange joint of the pipeline system through flange and bolt connectors. Compared to flange connections, welding is more secure, compact, and more suitable for situations with harsh working conditions. However, the installation process of welding methods is relatively more complex, requiring mastery of welding techniques and safety operating procedures. When choosing the installation method, it is necessary to determine based on specific application requirements and the working conditions of the pipeline system to ensure installation quality and safety.