LEDE company design and manufacture grooved piping system jointing fittings, is a leading China grooved pipe flange manufacturer and supplier, provide pipe jointing and flow control products of fire protection system and water work system. There are different sizes of pipe flanges for grooved piping system, made in accordance with FM, UL, CE certificates, etc. Engineered with complete automation equipment and manufacturing expertise, LEDE company provides quality ductile iron grooved flanges as well as custom firefighting and water supply solutions based on the client needs.