International flange standards are mainly two systems

　　Flange connection is the two pipes, fittings or equipment, the first fixed in a welding, between the two welding, plus a flange pad, bolted together to complete the connection.1060 Carbon Steel Forged Threaded Flange is an important connection for high pressure pipe construction. Flange connection easy to use, able to withstand greater pressure. Flanges are widely used in petroleum, chemical, natural gas, power, metallurgical pipelines. Flange standard system International flange flange standard has two main systems, namely the German DIN (including the former Soviet Union) as the representative of the European pipe flange system and the American ANSI pipe flange as the representative of the American pipe flange system. In addition, there are Japanese JIS pipe flange, but in the petrochemical plant is generally used only for public works, but also in the international impact of smaller. Now the country pipe flange in the next:
(1) Germany and the former Soviet Union as the representative of the European system of pipe flanges
(2) American system tube flange standard, represented by ANSI B16.5 and ANSI B 16.47
(3) British and French pipe flange standards, the two countries have two sets of flange standards.