ength integrity, enhanced dimensional characteristics and closer dimensional tolerances so that the screwed end forged steel globe valves are applicable for medium situation with high pressure and high temperature. 3. Threaded end forged steel globe valve can according to standard MSS SP-84. 2. There are three types bonnet design also for screwed forged steel globe valves, they are bolted bonnet, welded bonnet and pressure self-tightening bonnet, but the bolted bonnet type be used usually. The s