Diaphragm Type Gas Meter is used to measure the total quantity of the gas volume passing through the pipeline; It is suitable for mediums of liquefied petroleum gas, natural gas & Town gas, which consumed in industrial & residential. The frame is a founding of cold-rolled steel; And the core is made of metal, rubber and engineering plastic which can resist acid and alkali, some strong & hard antiseptic measures such as spraying plastic with static electricity and tin plating are taken to process the inner & outer parts of the made-products. It has the features of high quality, stable function, accurate calculating and long service-life.