All stainless steel pressure gauge shell and parts are made of corrosion-resistant stainless steel material, the pressure gauge has good corrosion resistance, can be widely used in petroleum, chemical, metallurgy, mining, machinery, electric power and food industry. Direct measurement of non-crystal, with a corrosive gas, liquid gas, liquid pressure, this section since the introduction of the pressure gauge, more and more by the majority of instruments, machinery, valves, piping and other industries heat-selected products.