According to the outdoor installation features of gas piping for multistory residential buildings in Guangdong s coastal cities, the gas supply mode for arranging gas meter box on roof is put forward, and the relevant design and problems are discussed.

The system flow,characteristics,main technical parameters and manufacturing process of double diaphragm direct acting gas regulator box are discussed,and its application and development prospect are analyzed.

The difficulties in reading meter,charging and managing induced by indoor installation mode of gas meter are analyzed.

Problems of gas meters for restaurant users are analyzed, the accuracy between diaphragm meters and intelligent meters, the relative error and performance between diaphragm meters and Roots meter are compared, and the solving method is put forward.

Combined with the actual situation in Anshan City,the problems existing in gas meters for commercial users are analyzed,the paths of solutions for the problems are discussed from each link of the technology and management,and the important role of marketing analysis to the management of gas meters is emphasized.

Study of the manufacturing process of diaphragm gas-meter;

A Method to Make the IC Card Gas-meter Low Power and High Relia bility;

Study on the New Methods of Gas-meter Installation in North Area's Staircase

5- type diaphragm gas meters.

The reason why the abnormal noise occurs during operation of diaphragm gas meter is analyzed, and the corresponding solution is put forward.