Commonly used 3PE anticorrosive steel pipe connection method

The 3PE anti-corrosion steel pipe, prevalent in China, is celebrated for its exceptional resistance to corrosion, impermeability to water and gases, and robust mechanical characteristics. These attributes have made it a staple in the oil pipeline sector. To understand how these pipes are connected, let's explore the primary methods employed.

Welding Connection:

Ideal for permanent installations, welding is a time-honored method offering a straightforward and secure connection. It's cost-effective, preserves the pipe's cross-sectional strength, and is straightforward to execute. Welding can be automated, ensuring a high level of airtightness and structural stability. However, it may not be the most environmentally friendly or efficient option for quick repairs.

Flange Connection:

This approach involves securing a flange to the pipe's end. To join two pipes, the flanges are either welded or bolted together, with a gasket providing the seal in between.

Groove Pipe Fitting Connection:

This is a leading technique for connecting pipelines that carry liquids and gases. It necessitates the use of specific pipe fittings such as rigid and flexible couplings, mechanical tees, and grooved flanges, which may include elbows, tees, crosses, reducers, and blank flanges.

Each of these methods has its unique benefits and is selected based on factors like the need for future disassembly, environmental considerations, and the desired level of connection integrity and reliability.