There are three main types of connection methods for spiral steel pipes.
1. Flange connection: general flange connection speed is fast, construction is convenient, and tools are simple, but it cannot meet the requirements of most projects in terms of safety and sealing. Generally, pipelines with low pressure and pipelines that are often moved are suitable for these connection ways, such as mud discharge pipes, etc.
2. Groove connection: also known as clamp connection technology, has become the first technology for liquid and gas pipeline connections. Although this technology was developed later in China than abroad, it was quickly adopted due to its advanced technology. accepted by the domestic market. The application of grooved pipe fittings connection technology makes the complex pipeline connection process simple, fast, and convenient. The pipeline connection technology has taken a big step forward. Grooved connection pipe fittings include two major categories of products: ①The pipe fittings that play the role of connection and sealing include rigid joints, flexible joints, mechanical tees, and grooved flanges; ②The pipe fittings that play the role of connection transition include elbows, tees, Cross, reducer, blind plate, spiral welded pipe, etc. The grooved connection pipe fittings used for connection and sealing are mainly composed of three parts: sealing rubber ring, clamp, and locking bolt. The rubber sealing ring on the inner layer is placed on the outside of the pipe to be connected and matches the pre-rolled groove, then buckle the clamp on the outside of the rubber ring, and then fasten it with two bolts. Due to the unique sealable structural design of the rubber sealing ring and the hoop, the grooved joint has good sealing performance, and the sealing performance is enhanced correspondingly with the increase of the fluid pressure in the pipe.
3. Clamp fitting connection:
As an advanced pipeline connection method, it can be installed on the surface or buried, that is, there are steel joints and flexible joints. Therefore, it has a wide range of applications. It can be used in the fire water system, air conditioning hot and cold water system, water supply system, petrochemical pipeline system, thermal power, military pipeline system, sewage treatment pipeline system, etc.
The connection characteristics of the spiral steel pipe, the groove connection makes the pipe connection operation simple, conducive to construction safety, good system stability, convenient maintenance, labor, and time-saving, so it has good economic benefits. With the clamp connection, although the price of a single piece of the clamp is relatively high, the comprehensive benefits of the installation of the entire pipe network are higher than that of the flange connection.
Post time: May-30-2023