Purpose
It is a kind of connecting pipe commonly used in pipeline installation. It connects two pipes with the same or different nominal diameters, so that the pipes can be turned at a certain angle, and the nominal pressure is 1-1.6Mpa.
Skills requirement
1. Since most of the pipe fittings are used for welding, in order to improve the welding quality, the ends are beveled, leaving a certain angle and with a certain edge. This requirement is also relatively strict, how thick the edge is, the angle and deviation The scope is specified. The surface quality and mechanical properties are basically the same as the tube. For the convenience of welding, the steel grade of the pipe fitting and the pipe to be 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 peening, and then painted with anti-corrosion paint. This is for export needs, and in China, it is also to facilitate transportation and prevent rust and oxidation. Work in this area must be done.
3. It is the requirement for packaging. For small pipes, such as exports, it is necessary to make wooden boxes, about 1 cubic meter. It is stipulated that the number of elbows in this box should not exceed one ton. The standard allows sets, that is, large sets are small, However, the total weight should generally not exceed 1 ton. For large pieces, they must be packaged individually, and those with 24" must be individually packaged. The other is the packaging mark, which should indicate the size, steel number, batch number, manufacturer's trademark, etc.
