Springs are used under shock, vibration or long-term alternating stress, so spring steel is required to have high tensile strength, elastic limit and high fatigue strength. In the process, spring steel is required to have certain hardenability, not easy to decarburize, and good surface quality.
Carbon spring steel is a high-quality carbon structural steel (including normal and high manganese content) having a carbon content wc in the range of 0.6% to 0.9%. Alloy spring steels are mainly silicon-manganese steels. Their carbon content is slightly lower, mainly by increasing the silicon content WSi (1.3% to 2.8%). In addition, there are alloy spring steels of chromium, tungsten and vanadium. In recent years, combined with China's resources, and in accordance with the requirements of new technologies for automobiles and tractors, we have developed new steel grades that incorporate elements such as boron, niobium and molybdenum on silicon-manganese steel, prolonging the service life of springs and improving the quality of springs. .
Urinal Flush Valve
Urinal Flush Valve is made of brass, chrome plated. Press down for water, delay time 6 to 8 seconds, then automatic closed. It often use for hung Urinal in public washroom. Exposed type flush valve looks simple, easy to install and operate. Working pressure should be 0.05MPa to 0.9MPa.
Urinal Flush Valve
Exposed Urinal Flush Valve,Concealed Urinal Flush Valve,Automatic Urinal Flush Valve,Urinal Flushing System
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