There are three main linking methods for spiral steel welded pipes. This article will introduce the three linking methods in detail.
Generally, flange connections are fast, easy to construct, and have simple tools, but they cannot meet most engineering requirements in terms of safety and sealing. Generally, pipes with low pressure and pipes that are often moved are suitable for this connection method, such as mud drainage pipes.
Also known as clamp connection technology, it has become the preferred technology for connecting liquid and gas pipelines. Although this technology was developed later in China than abroad, it was quickly accepted by the domestic market due to its advanced technology. The application of grooved pipe fittings connection technology makes the complex pipe connection process simple, fast and convenient. The pipe connection technology has taken a big step forward.
Grooved connection fittings include two broad categories of products:
①Pipe fittings that serve as connection seals include rigid joints, flexible joints, mechanical tees and grooved flanges;
②Pipe fittings that serve as connection transitions include elbows, tees, crosses, reducers, blind plates, spiral welded pipes, etc. The groove connection pipe fittings that function as connection seals mainly consist of three parts: sealing rubber rings, clamps and locking bolts.
The inner rubber sealing ring is placed on the outside of the connected pipe and matches the pre-rolled groove. Then buckle the clamp on the outside of the rubber ring and tighten it with two bolts. Due to the unique sealable structural design of its rubber sealing ring and clamp, the groove connection has good sealing performance, and as the fluid pressure in the pipe increases, its sealing performance increases accordingly.
The groove connection makes the pipeline connection operation simple, which is beneficial to construction safety, has good system stability, convenient maintenance, saves labor and time, and therefore has good economic benefits. Using clamp connection, although the price of a single clamp accessory is higher, the overall benefit of the entire pipe network installation is higher than that of flange connection.
As an advanced pipe connection method, it can be installed openly or buried, and there are both steel joints and flexible joints. Therefore it has a wide range of applicability. Can be used in fire water systems, air conditioning hot and cold water systems, water supply systems, petrochemical pipeline systems, thermal power and military pipeline systems, sewage treatment pipeline systems, etc.
