1. As most of the pipe fittings are used for welding, in order to improve the welding quality, the ends are turned into bevels, leaving a certain angle and a certain edge. This requirement is also relatively strict, how thick the side is, how much the angle is and deviation The scope is specified. The surface quality and mechanical properties are basically the same as the pipes. For welding convenience, the steel type of the pipe is the same as that of the connected pipe.
2, that is, all the pipe fittings have to undergo surface treatment, and the oxide scale on the inner and outer surfaces is shot off by shot blasting, and then coated with anticorrosive paint. This is for export needs. Moreover, it is also necessary to facilitate transportation and prevent rust and oxidation in China.
3. It is the requirement for packaging. For small pipe fittings, such as export, it is necessary to make a wooden box, about 1 cubic meter. The number of elbows in this box can not exceed about one ton. The standard allows sets, that is, large sets of small, However, the total weight cannot exceed 1 ton. For large pieces, they must be individually packaged, like 24 ″, they must be individually packaged. In addition, the package mark is marked with the size, steel number, batch number, manufacturer's trademark, etc.