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Technical requirements for quality Pressed ventilation elbow
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Technical requirements for quality Pressed ventilation elbow

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.

quality Pressed ventilation elbow

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 packaging requirements. For small pipe fittings, such as exports, it is necessary to make wooden boxes, about 1 cubic meter. It is stipulated that the number of quality Pressed ventilation elbows in such boxes should not exceed about one ton. The standard allows sets, that is, large sets Small, but the total weight generally does not exceed 1 ton. For large pieces, it needs to be packaged individually, and those like 24″ must be packaged individually. The other is the package mark, which should indicate the size, steel number, batch number, manufacturer’s trademark, etc.