2009LD/T 99.8-2008 Construction Engineering Labor QuotaMunicipal Engineering-Pipeline Network Engineering
1970LD/T 99.11-1997 Municipal engineering labor quota gas pipeline network installation project
LD/T 99.11-1997 Municipal engineering labor quota gas pipeline network installation project was changed to LD/T 99.8-2008 Construction Engineering Labor QuotaMunicipal Engineering-Pipeline Network Engineering.