Welded ball valve

The welded ball valves have been widely applied in various fields. Its excellent quality and high performance stability can not be matched by ordinary cast stell ball valves. The service life of a welded ball valve is much longer than that of a cast steel ball valve.The welded ball valves are widely applied in various pipe euqipment in such  industries as urban gas,unban heat supply,petrochemical industry,shipbuilding,iron&steel,pressure regulating station,power plant,etc.