Flanged connections are important pipeline construction. Flanged easy to use, able to withstand greater pressure. In industrial pipe, using a wide range of flange connection. Within the family, the pipe diameter is small, and the low-pressure, invisible flange connection. If a boiler room or production site, full of flanged pipe and equipment. Flange geometry include OD, ID, wall thickness. Also requires the control radius of curvature. For example, the length of the radius of 1.5d, then the radius of curvature must be within the tolerance range of the claims. Since most of these flanges for welding, in order to improve the quality of welding, to the ends of both drive groove, leaving a certain angle, with a certain edge, which requires a relatively stringent, more thick side, the number and angle of deviation range has a predetermined geometric dimensions with many more entries than the flange. Surface quality and mechanical properties of basic and tubes is the same. In order to facilitate the welding, and the steel pipe is connected it is the same. Go through all the flange surface treatment, the inner and outer surfaces of the oxide scale spraying out by shot peening, and then coated with anti-corrosion paint. This is required for export. Moreover, in the country but also to facilitate transport to prevent corrosion oxidation, have to do this work. Packaging requirements, for small flange, such as export, you need to do a wooden box, about one cubic meter, the provisions in this case is not about the number of bends over one ton, this standard allows the suit, namely large sets of small, but The total weight is generally not more than 1 ton. For large should a single package, like 24 "must be individually packaged. The other is the package label, the label is to indicate the size, steel number, lot number, manufacturer trademark symbol on the flange play on, along with packing Single and quality books and other documents flange Uses: Widely used in water conservancy, electricity, power plants, pipe fittings, industrial, pressure vessels and other work, happy about ...... work, happy about Xiaoqiang: Xiaoming , your home is the most valuable thing is what mobile phones, computers, televisions ...... Xiaoming:?? No, me my mother's wardrobe Xiaoqiang: Why a wardrobe can be worth Xiaoming:?? wardrobe worthless, be inside ! something valuable ah Xiaoqiang: Your mother's clothes ah Xiao Ming:? No, your father!