Connection technology of stainless steel groove pipe

Stainless steel groove pipe connection technology, also known as clamp connection technology, has become the first technology for liquid and gas pipe connection. Although this technology was developed later in China than abroad, it was quickly accepted by the domestic market due to its advanced technology. After several years of development and application, the two traditional pipe connection methods of flange and welding have been gradually replaced. It is not only more technically mature, but also widely recognized by the market. The application of stainless steel groove pipe connection technology makes the complicated pipe connection process simple, fast and convenient. A big step forward in pipeline connection technology. Below with a look at the connection technology of stainless steel groove pipe.

Stainless steel grooved pipe includes two products:

(1) The pipe fittings that play the role of connection and sealing have rigid joints, flexible joints, mechanical tees and groove flanges;

(2) The pipe fittings that play the role of connecting the transition have elbows, three-way, four-way, reducing pipes, blind plates, etc.

The groove connection pipe fitting which plays the role of connection and sealing is mainly composed of three parts: sealing rubber ring, clamp and locking bolt. The rubber sealing ring located in the inner layer is placed on the outside of the pipe to be connected, in line with the pre-rolled groove, and then a clamp is fastened to the outside of the rubber sealing ring, and then secured with two bolts. Due to the unique sealing structure of rubber sealing ring and clamp design, the trough connector has better sealing performance, and its sealing performance is improved with the increase of pipeline pressure.

Connection advantages of stainless steel grooved pipe fittings

1. Simple operation

The connection operation of the grooved fittings is very simple and does not require special professional skills. Ordinary workers can operate with simple training. This is because a large number of elaborate technical components are incorporated into the finished product through the factory. It takes only a few minutes to connect the pipe fittings, which simplifies the technical difficulty of field operation to the maximum extent, saves man-hours, stabilizes the engineering quality and improves the work efficiency. This is also the general direction of the development of installation technology.

However, the traditional pipe welding and flange connection method not only requires a certain level of technical welding workers, but also requires a long time, difficult operation, welding smoke pollution problems. Due to the differences in working space and welding technology, welding quality and appearance are difficult to achieve satisfactory results, affecting the overall quality of the project.

In addition, because the stainless steel groove pipe fittings are finished products, the operation space required on the site is small, and the installation against the wall and at the corner can be realized, which greatly reduces the difficulty of operation, saves the floor area, and beautifies the installation effect of the pipeline.

2, does not affect the original characteristics of the pipeline

In the connection of stainless steel grooved pipe fittings, only a groove is extruded on the outer surface of the connected pipe fittings through the rolling groove machine, without damaging the inner wall structure of the pipe fittings, which is the unique technical advantage of the grooved pipe fittings connection. With traditional welding methods, many pipes with anti-corrosion coatings on the inner wall will be damaged. Therefore, the code stipulates galvanized pipe, lined plastic steel pipe, steel-plastic composite pipe and so on. Do not use welded or flanged connection, otherwise require secondary treatment.

3, conducive to construction safety

With the bevel pipe connection technology, only the cutting machine, slope rolling machine and moving hand need to tighten the bolts on site, and the construction organization is convenient. Welding and flanged connections require complex power cables, cutting tools, welders, oxygen and acetylene cylinders, creating complexity for the construction organization, as well as potential risks of electrical leakage and fire. At the same time, welding slag generated by welding and gas cutting inevitably falls into the pipeline, which is easy to cause blockage of pipeline valves and even equipment in use, and also pollutes the water quality in the pipeline.

In addition, welding and flange connection inevitably require a long time of high-intensity high-altitude work, and production safety accidents are also easy to occur.

4, good system stability, easy maintenance

Stainless steel grooved pipe connection has a unique flexibility, so that the pipe has the ability to resist vibration, shrinkage and expansion. Compared with welded and flanged connections, the stability of the piping system is increased, and it is more suitable for temperature changes, thus protecting the pipe valve parts and reducing the damage of the pipe stress on the structural parts.

Due to the simple operation of the stainless steel groove pipe fitting connection, the required operating space is smaller, which brings a lot of convenience to the future maintenance. When the pipe needs to be repaired and replaced, just loosen the two clamps, you can change, rotate and modify a section of pipe at will. There is no need to destroy the surrounding walls, thus reducing maintenance time and maintenance costs.

5. Economic analysis

Stainless steel grooved pipe fittings are convenient to connect, save labor and time, and have good economic benefits. Many articles have done economic analysis, that "with the clamp connection, although the price of a single part of the clamp is higher, the comprehensive benefit of the entire pipe network installation is higher than that of the flange connection." In contrast, flange connections are treated with secondary galvanizing (which must be carried out in accordance with the specifications). Stainless steel groove pipe connection technology Stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe stainless steel groove pipe