... 2 The model explanation1.3 The overall dimension form MODELSteel pipe diameter d (mm)PN=1.6~10MPaCTJY-2534300CTJY-4048300CTJY ... used for gas distribution system, regulating station, gas and petroleum pipe network,Mediamanufactured coal gas, LPG, air, gas,town gas, ... regulator, steel flange, Stop Valve, ball valve, Filter, insulating joint, regulator station etc. Our company was established in 1952, we ...