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GB 50251-2003 Code for design of gas transmission pipeline engineering 200.0 via email in 1 business day superseded
CECS 186-2005 Specification for construction quality acceptance of polygon oil seal gasholder 990.0 via email in 1~10 business day valid
CJJ 33-2005 Code for construction and acceptance of city and town gas distribution works 600.0 via email in 1~3 business day valid
CJ/T 335-2010 Slam-shut valves and relief valves for city gas 200.0 via email in 1 business day valid
CJ/T 222-2006 Quality assessment procedures and test rules for gas-burning appliances for domestic use 210.0 via email in 1~3 business day valid
CJ/T 449-2014 Diaphragm Gas Meters with Shut-off Valve 330.0 via email in 1~3 business day valid
GB 50251-1994 Design code for gas transmission pipeline engineering 1875.0 via email in 1~10 business day abolished
GB 27791-2011 City gas pressure regulating installation 210.0 via email in 1~3 business day valid
CECS 15-1990 Design code for buried oil gas steel pipeline structure 630.0 via email in 1~3 business day abolished
GB/T 28885-2012 Specifications for city gas service 270.0 via email in 1~3 business day valid
CJ/T 112-2008 Integrated circuit card diaphragm gas meter 180.0 via email in 1~3 business day valid
CJ/T 190-2015 Polyethlene/aluminum/polyethylene composite pipe press fitting via email in business day valid
DGJ 08-10-2004 Technical specification of manufactured gas and nutural gas pipeline engieering 600.0 via email in 1 business day valid
CJ 50-2008 Pressure regulators for liquefied petroleum gas cylinders 210.0 via email in 1~3 business day valid
CJ/T 477-2015 Ultrasonic gas meter 555.0 via email in 1~5 business day valid
CJJ/T 215-2014 Technical specification for leak detection of city gas piping system via email in 1~3 business day valid
CJ/T 3075.1-1998 Laboratory of gas burning appliances - General technique requirements 240.0 via email in 1~3 business day abolished
CJ/T 288-2008 Factory-made stainless steel flue and chimneys 180.0 via email in 1~3 business day valid
GB 50031-1991 Norm of Acetylene Plant Design 150.0 via email in 1 business day valid
DBJT 08-1985-1998 Gas Pipeline and Equipment Anti-leakage Device in Apartment Kitchen via email in business day valid
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