Elbow purpose

In the pipeline system, elbow is a pipe fitting that changes the direction of the pipeline. According to the angle, there are three commonly used elbows: 45 ° and 90 ° 180 °. In addition, according to the needs of the project, there are other abnormal angle elbows such as 60 °. Elbow materials include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics. The methods of connecting with the pipe include: direct welding (commonly used), flange connection, hot melt connection, electrofusion connection, threaded connection, socket connection, etc. According to the production process, it can be divided into: welding elbow, stamping elbow, pushing elbow, casting elbow, butt welding elbow, etc. Other names: 90 degree elbow, right angle bend, love bend, etc.

Introduction:

Elbow is a kind of connecting pipe fitting commonly used in plumbing installation, which is used for connecting at the bend of the pipe and changing the direction of the pipe.

Other names: 90 ° elbow, right angle elbow, airbend, stamping elbow, pressing elbow, machine-made elbow, welding elbow, etc.

Usage: connect two pipes with the same or different nominal diameters to make the pipeline turn 90 °, 45 °, 180 ° and various degrees.

Bending radius less than or equal to 1.5 times of pipe diameter belongs to elbow, and greater than 1.5 times of pipe diameter belongs to elbow.

Purpose:

German standard elbow

A commonly used connecting pipe fitting in pipeline installation, which connects two pipes with the same or different nominal diameter to make the pipeline turn at a certain angle, and the nominal pressure is 1-1.6mpa.

Technical requirements:

1. Since most pipe fittings are used for welding, in order to improve the welding quality, the ends are turned into grooves, with a certain angle and a certain edge. This requirement is also strict. There are regulations on the thickness of the edge, the angle and the deviation range. The surface quality and mechanical properties are basically the same as those of pipes. For the convenience of welding, the steel grade of the pipe fitting and the connected pipe is the same.

2. That is, all pipe fittings should be surface treated, and the oxide scale on the internal and external surfaces should be sprayed off by shot blasting, and then coated with anti-corrosion paint. This is for export needs. Moreover, this work should be done in order to facilitate transportation and prevent corrosion and oxidation at home.

3. That is, the requirements for packaging. For small pipe fittings, such as exports, wooden boxes need to be made, about 1 cubic meter. It is stipulated that the number of elbows in this kind of box should not exceed 1 ton. This standard allows suits, that is, large sets and small sets, but the total weight should generally not exceed 1 ton. For large pieces of Y, it needs to be packaged individually. The other is the packaging mark, which indicates the size, steel number, batch number, manufacturer's trademark, etc.