Why doesn't Masteel's cast iron pipe fittings crack?

Pipe joints are also called pipe fittings, connectors, joints, etc. Pipe joints are mainly used to connect different pipe fittings in various pipeline systems. In various pipeline systems, pipelines are connected with different joint fittings to form pipeline steel. Malleable cast iron (Masteel) pipe fitting is a kind of connecting pipe fitting, which can connect different pipe fittings in the pipeline and make different pipelines effectively connected together.

Characteristics of malleable cast iron (Masteel) pipe fittings;

Malleable cast iron (Maanshan Iron & Steel Co., Ltd.) pipe fittings are made of malleable cast iron and connected with the pipeline through threads (threads) to ensure good contact and connection with the pipeline. The working pressure of this pipe fitting is generally within 0. 1Mpa. Don't use it under extreme pressure to prevent some abnormal events. The appearance of malleable cast iron (Masteel) pipe fittings is characterized by thick edges at the ends. In order to increase the connection strength, it is mainly used for pipeline extension, branching and turning.

Malleable cast iron pipe fittings mainly have the following varieties:

1, pipe hoop. Pipe hoop is used to connect pipes with the same diameter on the same straight line, which is mainly divided into two types: threading and threading; Reducing pipe hoop, also known as big head and small head, is used to connect two pipes with different diameters on the same line. The reducer is eccentric, and the center lines of the big and small ends are not coincident. It is used to connect two horizontal pipes with different diameters on the upper and lower sides of the same horizontal straight line. The application scope of different pipe hoops is also different. According to your own characteristics, determine under what circumstances, as well as matters needing attention.

2. Elbow. Elbow is mainly used at the right-angle elbow of pipeline to connect two perpendicular equal-diameter pipelines; Reducing elbow is used to connect two mutually perpendicular pipes with different diameters, so that mutually perpendicular pipes can be effectively and reasonably connected together.

3. Three links. The diameter of both ends in the straight line direction is the same, and the end perpendicular to it is a small pipe diameter, which is used for the connection of small pipe diameter branches; 45 oblique tee, also known as Y-shaped branch pipe, is used at the intersection and bifurcation of pipelines with small local resistance; Tees are mainly used to reduce local resistance and control the impact of pipelines, that is, to minimize the eyes of pipelines. In this case, tees are usually used to connect pipes.

4, four links. The four-way bridge is mainly used for the vertical cross connection of pipelines. When two smaller diameter branch pipes are vertically connected on the pipeline, a reducing cross is used. It is an effective link and use of the four major pipelines, which is convenient for the smooth flow of pipelines.

5, fill the heart. Casing is also called inner and outer wire and inner and outer diameter. Small inside, big outside. The outer wire is connected with other pipe fittings, and the inner wire is directly connected with the pipeline, which is used at the reducing joint of the pipeline. Wires with different diameters have different uses and different connection places. External thread nipple is used to connect two adjacent pipe fittings, and it is often replaced by pipe nipple spun by lathe. This very short connection is called alignment.

6. Plug, also known as plug, is a plug with external thread, which is used to block the nozzle of pipe fittings and prevent the objects in the pipeline from flowing out. The joint includes two male and female joints that can be interlocked with each other, and a sleeve connecting the male and female joints. Interlocking part is lined with rubber pad or asbestos paper pad to avoid water leakage. The pipe joint is used in the pipeline profile where pipes with the same diameter need flexible connection, that is, the pipeline can be disassembled without rotating the pipeline, so as to facilitate the disassembly and maintenance of the equipment in the pipeline profile. In addition, pipe joints are also very important in pipeline installation.

The above are mainly several varieties of malleable cast iron pipe fittings, which need to be understood and mastered, and understand the specific division of labor and usage of different elbow pipe fittings in use. Pay attention to the different parts to be connected and the use skills of these six elbow fittings, and don't just know these knowledge.