GB 50316《工業金屬管道設計規范》，根(gen)據(ju)輸送的流(liu)體性質(zhi)和泄漏時造成的后果(guo)將管道分為A1、A2、B、C、D五類流(liu)體管道，新(xin)版的GB50316將按(an)照(zhao)新(xin)的分類方(fang)法劃分。

 GB 50235《工業金屬管(guan)道(dao)(dao)工程施工規范》，按(an)國家有(you)關規定劃(hua)分為GC1、GC2和GC3。除壓力管(guan)道(dao)(dao)以外的其他(ta)管(guan)道(dao)(dao)，按(an)C類(lei)流體(ti)管(guan)道(dao)(dao)和D類(lei)流體(ti)管(guan)道(dao)(dao)分類(lei)。新版的GB 50235將(jiang)取消(xiao)GC3。

 SH/T 3059《石(shi)油(you)(you)化(hua)工(gong)(gong)(gong)管(guan)道(dao)(dao)設(she)計器材(cai)選(xuan)用規(gui)范》與GB50517《石(shi)油(you)(you)化(hua)工(gong)(gong)(gong)金(jin)屬管(guan)道(dao)(dao)工(gong)(gong)(gong)程(cheng)(cheng)施工(gong)(gong)(gong)質量驗收規(gui)范》將管(guan)道(dao)(dao)分(fen)(fen)為：SHA1、SHA2、SHA3、SHA4、SHB1、SHB2、SHB3、SHB4、SHC1、SHC2、SHC3、SHC4。SH／T 3501《石(shi)油(you)(you)化(hua)工(gong)(gong)(gong)有毒、可燃介質鋼制管(guan)道(dao)(dao)工(gong)(gong)(gong)程(cheng)(cheng)施工(gong)(gong)(gong)及驗收規(gui)范》包括：SHA1、SHA2、SHA3、SHA4、SHB1、SHB2、SHB3、SHB4。新版的石(shi)油(you)(you)化(hua)工(gong)(gong)(gong)管(guan)道(dao)(dao)分(fen)(fen)級（類）的流體毒性將依據《危(wei)險化(hua)學品目錄》規(gui)定的毒性。