Groove Tube is currently on the market as a connecting tube top selling products, grooved pipe connection as an advanced pipeline connection, which can also be buried next set, that steel joints, but also flexible joints. Application Groove Tube connection technology, so that the pipe connection process becomes complicated simple, fast and convenient. The pipe connection technology a major step forward. Therefore has a wide range of applications. According to the system of: can be used for fire water systems, air conditioning hot and cold water systems, water supply systems, petrochemical pipeline systems, thermal and military pipeline systems, sewage treatment and other piping systems; by pipeline Material: can be used to connect steel, brass, stainless steel pipe, plastic-lined steel pipe, ductile iron pipe, thick-walled plastic pipes and hoses and valves with flanged pipe joints and fittings. Sources Weifang Long-Casting Co. http://www.longyuguanjian.com