FRP elbow fittings in the piping system fittings are to change the direction of the fittings. Angle points, 45 ° and 90 ° 180 ° are the three most commonly used ones. In addition to the project needs, it also includes other abnormal 60 ° angle bending. Elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, steel, non-ferrous metals, plastics, etc. The main pipelines for road connection are: direct (most commonly used) flange connection, thermal fusion connection, electric fusion connection, screw connection socket-type connection welding. According to the production method, it can be divided into: welding elbows, stamping elbows, elbow pushing, casting elbows, butt welding elbows. Other names: 90 degree elbow, right-angle elbow, elbow, etc. Love.