Anti-corrosion insulation heat preservation pipe fittings including elbows, anti-corrosion insulation tee, anti-corrosion insulation pipe bending, anti-corrosion insulation reducer, etc.Anti-corrosion insulation pipe is made of high density polyethylene outer casing, polyurethane foam thermal insulation layer, and to work within the tube together.Main used for thermal insulation heat preservation elbow straight, generally with thermal insulation pipe, is based on thermal engineering design of pipeline to compensation effect, make the bend parts can have enough insulation performance, the standard elbow Angle: 30 degrees, 45 degree, 60 degrees, 90 degrees.Widely used in liquid and gas transmission pipeline, chemical pipeline heat preservation engineering, petroleum, chemical industry, the central heating network central air-conditioning ventilation pipe, municipal engineering in the pipe bend.Main execution standard CJ/T200-2004 "urban heating conditions of prefabricated directly buried steam pipe insulation technology, CJ/T104-2005" urban heating technology of directly buried steam pipeline regulation, SY/T114-2000, SY/T115-2001 "high density polyethylene polyurethane foam insulation pipe