A gas meter is a specialized flow meter, used to measure the volume of fuel gases such as natural gas, liquid gas and city gas. Qinchuan models G1.6, G2.5, G4 are diaphragm gas meters used at domestic and residential applications; as well as its models G6, G10, G16, G25, G40 are diaphragm gas meters used at commercial and industrial buildings application.

Qinchuan owns three patents on diaphragm gas meters, one is patent on platform for detecting angle (patent no.: CN201242422 Y) and the other is patent on oscillating quantity detecting device of counter adjusting gear (patent no.: CN202770509 U), which are the core technologies of basic gas meter, achieving the error of indication ± 1.0%.

Another is the patent on Joint welding device for gas meter (patent no.: CN 202824969 U). Most of the basic gas meters on market adopt to rivet connection, Qinchuan adopts of resistance welding technology on connection guarantees superior air tightness and connection reliability.