The large diameter heat simmer elbow is the more primitive production methods, in a tube filling sand, and then heating the tube to bend simmer. The method greater flexibility, but the efficiency is not high, greater energy wastage, high cost. Carbon steel heat bending bends less use of the method, but there are obvious advantages in the non-ferrous metal pipe and plastic pipe simmer bend. The process: filling sand, heating, bending, sand, slightly larger caliber should bend with heat and simmer. If the cold simmer production wall fold, oval phenomenon. Steel pipe cutting through the pipe pushing machine put in the pipe to be bent section induction loop pipe stuck in the head with a mechanical rotating arm, induction loop through IF current heating pipe when the pipe temperature rises to a plastic state, In the back of the steel pipe with a mechanical thrust forward, bending, steel pipe bending part of the rapid cooling with a cooling agent, such heating, edge forward, side bending, while cooling will continue to elbow bending. Heat simmer pipe is mainly used for circular steel structure of the building, tunnel support, curved roof beams, subway engineering, aluminum doors and windows, ceiling, package cylindrical skeleton, balcony handrails, shower door, rail lines, fitness equipment and other industries . Many years my company produces heat simmer pipe, large diameter heat bending bends, elbows and other products, Materials include: carbon steel (20 #, Q235, Q345, A105, A106, A516 Gr70, etc.), alloy steel (P11, F11, The P9, F9, 12Cr1MoV, 15CrMoG, 1Cr5Mo), stainless steel (304,316,321,316 L, 304L ,18-8, etc.), advanced process equipment, detection means complete, in order to ensure the quality of the output, so that customers buy rest assured that the company promises: during the product warranty period, if the product is damaged, I will be compensated or repair, we have an obligation to assist the demand side, our field service personnel dispatched to meet the needs of the project.