The Shanghai the Guerlain Electrical Material Co., Ltd.: elbow in the piping system, elbow fittings change the direction of the pipeline. Angle points, 45 ° and 90 ° 180 ° The three most commonly used, and other non-normal angle bend 60 °, etc. In addition, according to project needs. The Elbow materials cast iron elbow, stainless steel elbow, alloy steel elbow can be calcined cast iron elbow, carbon steel elbow, of nonferrous metals elbow and plastic elbow, etc.. With tube links: soldered directly flanged (the most common way), hot melt connection, fused connection, threaded coupling and socket coupling. In accordance with the production process can be divided into: welding elbow, stamping elbow, casting elbow. A connection pipe installation with fittings for the connection of the pipe bend. Other name: 90 degree elbow, right angle bend, love bend. Connect two nominal diameter is the same or different tubes, the pipeline for a certain angle turn. Category: 1. Material divided carbon steel elbow, steel elbow, alloy steel elbow, stainless steel elbow, copper elbow, alloy elbow, plastic elbow, argon Ge Lek elbow, ppc elbow. 2. Production methods can be divided into a push system, pressing, forging, casting, and so on. 3. Divided manufacturing standards can be divided into the GB electricity standard water standard, American standard, German standard, Japanese standard, the Russian standard, etc..