1 Certification:ISO9001:2008 2 Reasonable price 3 Professional Insulation joint 4 Quality guarantee 5 Install&maintain easy 1 Insulating ... 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, ...