The elbow is the pipe in the pipe system that changes the direction of the pipe. According to the angle, there are 45 degrees and 90 degrees, 180 degrees, three most commonly used, in addition, according to the project needs, including 60 degrees and other non normal angle elbow. The elbows are made of stainless steel, alloy steel, malleable cast iron, carbon steel,. The way to connect with the pipe is: direct welding (the most commonly used way), flange connection, hot melt connection, electric melting connection, threaded connection and socket connection. According to the production process can be divided into: welding elbow, stamping elbow, push elbow, casting elbow, etc.. Other name: 90 degree elbow, right angle bend, bend of love, aluminium elbow, aluminium alloy elbow, etc..
A seamless thick wall bend is a pipe fitting for a bend in a pipe. The largest proportion of all pipe fittings used in the piping system is about 80%. Generally, different forming processes are chosen for the elbows with different material and wall thickness