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Welding neck
Sep 06, 2016

Flanges for welding: welding neck flange welding is often called "high hub" flange. The aim is to transfer pressure pipeline, thus reducing at the Stadio Artemio Franchi high stress concentration. Welding is the best design for welding neck flange the flange because of its inherent structural value. But the price is relatively high, because the production process is complex.

Threaded (threaded) flange: the threaded flange connections is to use threads. But the Center corresponding to the pipe thread size. Its main advantage is that it can be welded Assembly.

Sliding flange: slide the flange has a low hub because the pipe into the single flange welding before. This is welded inside and outside to provide sufficient strength to prevent leakage. Slide the flange, are all bored slightly larger outside diameter pipeline matches. They are superior to the welding neck flange, due to the lower initial cost, many users, but probably not lower installation costs, because the increase in less welding neck flange.

Lap joint flanges: lap joint flange slide the flange is actually exactly the same, unless it is a RADIUS between hole and flange race. This is the necessary radius of flange to accommodate lap joint stub ends. Typically, lap joint flanges and fitted with lap joint stub end of mating systems.

Slide the socket welding flange is similar to a flange, unless it has a hole and the hole size. Counter bore match the pipe, the pipe inserted into the flange similar sliding flange. In the smaller diameter of the hole is the same as the ID of the same pipeline matches. Restrictions are built-in holes, used as a purpose-built tube shoulder stays at the bottom. This eliminates any traffic restrictions in the use of socket welding flange.