90 degree pipe bend radius 90 degree pipe flange 90 degree steel pipe elbow

Since most pipe fittings are used for welding, in order to improve the welding quality, the ends are beveled, leaving a certain angle and a certain edge. This requirement is also relatively strict, and the thickness of the edge, the angle and the deviation range are all specified. The surface quality and mechanical properties are basically the same as those of the pipe. In order to facilitate welding, the steel type of the pipe fittings and the connected pipes is the same. That is, all pipe fittings must undergo surface treatment, and the iron oxide scale on the inner and outer surfaces must be sprayed off by shot peening, and then coated with anti-corrosion paint. This is for export needs. Moreover, in China, it is also for the convenience of transportation to prevent rust and oxidation, and this work must be done.