The connection methods of spiral steel pipes are mainly divided into three types.
1: Flat connection:
General flange connection speed, convenient construction, simple tools, but in terms of safety and sealing, do not meet most engineering requirements. Generally, pipelines with low pressure. Pipelines that are often used are suitable for this connection method, such as mud pipeline pipeline pipelines wait.
2: Gully connection:
Also known as the cable connection technology, it has become the first promotion technology of the current liquid and gas pipeline connection. Although the development time of this technology in China is later abroad, due to the advanced nature of its technology, it is quickly accepted by the domestic market. The application of groove pipeline connection technology makes complex pipeline connection processes simple, fast, and convenient. Make the pipeline connection technology a big step forward.
The groove connection pipes include two major products:
① The pipes that connect the sealing effect include rigid connectors, flexible connections, mechanical three -tech and groove -type flange;
② The pipes that connect the transitional effect include elbow, three links, four -way, different diameter pipes, blind plates, spiral welded pipes, etc. There are three parts of the groove pipelines that are connected to the sealing effect: sealing rubber rings, card holes and lock bolts. The rubber sealing ring located in the inner layer is placed on the outside of the connected pipe, and it is consistent with the pre -rolled grooves. Then, the card hoop is fastened outside the rubber ring, and then the two bolts are tightened. Because the rubber sealing ring and the card hoop are designed with a unique sealable structural design, the groove connector has a good sealing, and the sealing properties are increased accordingly as they increase the pressure in the tube.
3: Card hoop pipeline connection:
As an advanced pipe connection method, it can be clearly set or buried, that is, there are steel joints, as well as flexible joints. Therefore, it has a wide range of applications. It can be used for fire system, air -conditioning hot and cold water system, water supply system, petrochemical pipeline system, thermal power and military pipeline system, sewage treatment pipeline system, etc.
The connection characteristics of the spiral steel pipe, the groove connection makes the pipeline connection operation simple, it is conducive to construction security, good system stability, convenient maintenance, and time -saving time, so it has good economic benefits. Using a card hoop connection, although the single accessories of the card hoop are high, the comprehensive benefits of the entire pipe network installation are higher than that of the flange connection.
