Slip-On Flange- Butt Weld & Flat Face Types

Introduction to Welding Loops​
Welding loops can be regarded as a special Pipe Fitting or connection method that plays a vital role in pipe systems. They connect pipes together by welding to form a continuous and complete pipe system, and can be customized according to specific application scenarios and needs. In industrial production, welding loops come in various forms, with loop flanges being commonly used components in pipe connections. These loop flanges are connected to pipes by welding to achieve the sealing and connection functions of the Pipe Fittings, working alongside other key components like Rubber Expansion Joint, Bellow Expansion Joint, Flexible Metal Hose, Dismantling Joint, Flange Adaptor, and Duckbill Check Valve to ensure the efficiency and stability of the entire pipeline system.​

When it comes to the manufacturing process of welding loops, there are two main methods. The first is the flanging manufacturing process: it involves folding the end of the pipe to a certain angle and welding it with the Flange . This method is suitable for occasions with thin pipe wall thickness and low pressure levels. Its advantages include simple operation and low cost; however, the disadvantages are relatively low connection strength and a tendency to leak under high - pressure or high - temperature environments. In such low - pressure scenarios, it can work in conjunction with Rubber Expansion Joint which offers flexibility and vibration damping, as well as Flange Adaptor to ensure compatible connections.​

The second manufacturing process is the ring manufacturing process: connection is achieved by cutting the end of the pipe and welding a ring flange. This method is ideal for occasions with thick pipe wall thickness and high pressure levels. It boasts high connection strength, good sealing, and the ability to withstand large pressure and temperature fluctuations. But it has the disadvantages of a relatively complex manufacturing process and high cost. This process is well - suited for high - pressure systems where components like Bellow Expansion Joint handle thermal displacements and Duckbill Check Valve prevents backflow, as the strong connection of ring flanges can support the reliable operation of these critical parts.​

In a comprehensive pipeline setup, welding loops, whether made through flanging or ring processes, form essential connections. They complement the functions of Flexible Metal Hose which provides routing flexibility, Dismantling Joint that eases maintenance, and Bellow Expansion Joint that compensates for displacements. For instance, in high - pressure industrial pipelines where ring - manufactured welding loops ensure strong connections, Bellow Expansion Joint can absorb thermal expansions without compromising the integrity of the welded joints. Meanwhile, Flange Adaptor can assist in aligning different flange types with welding loops, and Rubber Expansion Joint adds vibration absorption in areas connected via welding loops, creating a well - rounded and efficient pipe system.​