Across the pond, you will find the Deutsches Institute fur Normung (DIN) flange specification, consisting of a variety of European styles which have been unified into one code for the purpose of commonality. Designation as a DIN Flange by the German Institute of Standardization assures the user of design quality the way an ASME flange would here in America. Although much less common than ANSI/ASME steel flanges in the United States, many of our international customers request flanges to these specifications for a variety of applications such as imported steel vessels, cargo ships, and other infrastructure which may consist of metric pipes/valves and European designed equipment.
The subset flanges under the DIN standard consist of the same style of flanges in the United States, including the most commonly used slip on flanges, weld neck, flanges, and blind flanges. Adapter flanges can be custom made to end user requirements for the mating of American flanges to international ones, however we find it is a much more common and easy solution to provide DIN flanges to mate to existing equipment.
The most common metric type flanges fall under the following categories:
DIN 2501 through 2503 for flat ring flanges
DIN 2512 through 2519 for alternate face flanges
DIN 2627 through 2633 for weld neck flanges
DIN 2641 through 2642 for lap joint flanges
DIN 2565 through 2569 for threaded/companion flanges
DIN 2527 for blind flanges
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As the state has increased investment in domestic construction of farmland water conservancy projects and high-speed railways, the local construction of some related regions has also been carried out. As a result, the excavator market has been booming, and the market for used excavators has been in short supply. .
Taking Shanghai as an example, the major projects in Shanghai in 2011 will focus on the main line of “innovation-driven, transitional development†and focus on the use of major projects to guide, drive, and support the economic and social development of the city. There are 84 items and 44 preparatory items. The planned investment plan for the year is 100.2 billion yuan. During the year, 20 new projects are planned to be completed, or 12 projects are planned to be completed or basically completed.
Such a huge amount of engineering and capital investment has naturally given them a chance to see the business opportunities in the eyes of the astute Shanghainese. It can be said that as long as they have the opportunity to participate in the construction, they will have a chance to get a glass of it, and many people will look at it. Aiming at the earthwork construction project, the excavator is naturally a ticket for admission as a qualification for participation.