1, the majority of pipe fittings for welding, in order to improve the quality of welding, the end of the car into a groove, leaving a certain angle, with a certain edge, this one is also more stringent requirements, how thick edge, how much angle and deviation The scope of the provisions. Surface quality and mechanical properties are basically the same as for pipes. For welding convenience, the pipe is the same type of steel as the pipe to be connected.
2, that is, all the pipe fittings have to go through surface treatment, the inner and outer surface of the oxide coating by shot peening spray, and then coated with anti-corrosion paint. This is for export needs. Moreover, it is also necessary to do the work in this area in order to facilitate transportation and prevent rust oxidation in China.
3, that is, the packaging requirements For small tube, such as exports, you need to do wooden boxes, about 1 cubic meter, provided that the number of elbows in this box can not exceed about one ton, the standard allows the suit, However, the total weight of the general can not exceed 1 ton. For the large y will have a single package, such as 24 "must be a single package. The other is the package mark, mark is to indicate the size, steel, batch number, trademark and other manufacturers.