Small elbow

In the pipeline system, small elbow stainless steel castings are pipe fittings that change the direction of the pipeline. According to the angle, there are three commonly used ones: 45° and 90°180°. In addition, according to engineering needs, it also includes other abnormal angles such as 60°. elbow. The elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics. A commonly used connection pipe fitting in pipeline installation, connecting two pipes with the same or different nominal diameters to make the pipe bend at a certain angle, and the nominal pressure is 1-1.6Mpa.

The ways of connection with the pipe are: direct welding flange connection, hot melt connection, electrofusion connection, threaded connection and socket connection, etc. According to the production process, it can be divided into: welding elbow, stamping elbow, push elbow, casting elbow, butt welding elbow, etc. Other names: 90 degree elbow, right angle bend, etc.

Skills requirement:

1. Since most of the pipe fittings are used for welding, in order to improve the welding quality, the ends are beveled with a certain angle and a certain side. This requirement is also strict, how thick the side, how much angle and deviation The scope is stipulated. The surface quality and mechanical properties are basically the same as those of the pipe. For the convenience of welding, the steel grade of the pipe fitting and the pipe being connected is the same.

2. That is, all pipe fittings must be surface treated, and the iron oxide scale on the inner and outer surfaces is sprayed off by shot blasting, and then coated with anticorrosive paint. This is for export needs. Moreover, it is also for the convenience of transportation in the country to prevent corrosion and oxidation. This work is required.

3. It is the requirements for packaging. For small pipe fittings, such as export, it is necessary to make a wooden box, about 1 cubic meter, and the number of elbows in this box cannot exceed one ton. The standard allows for sets, that is, large sets and small sets. However, the total weight should generally not exceed 1 ton. For large items, single packaging is required, such as 24″ must be individually packaged. The other is the packaging mark, the mark must indicate the size, steel number, batch number, manufacturer's trademark, etc.