GB 50316《工(gong)業金屬管(guan)道(dao)設計(ji)規范(fan)》，根(gen)據輸(shu)送的流體性(xing)質和泄(xie)漏時造成(cheng)的后果將(jiang)(jiang)管(guan)道(dao)分為A1、A2、B、C、D五(wu)類(lei)(lei)流體管(guan)道(dao)，新版(ban)的GB50316將(jiang)(jiang)按照新的分類(lei)(lei)方法(fa)劃分。

 GB 50235《工業金屬管道(dao)工程(cheng)施工規范》，按國家有關規定劃(hua)分(fen)為GC1、GC2和GC3。除壓(ya)力管道(dao)以(yi)外的其他管道(dao)，按C類(lei)流體管道(dao)和D類(lei)流體管道(dao)分(fen)類(lei)。新版的GB 50235將取消GC3。

 SH/T 3059《石油(you)(you)(you)化(hua)工(gong)(gong)(gong)管(guan)(guan)道設計器材選用(yong)規(gui)范(fan)》與GB50517《石油(you)(you)(you)化(hua)工(gong)(gong)(gong)金屬管(guan)(guan)道工(gong)(gong)(gong)程施工(gong)(gong)(gong)質量驗收規(gui)范(fan)》將管(guan)(guan)道分為：SHA1、SHA2、SHA3、SHA4、SHB1、SHB2、SHB3、SHB4、SHC1、SHC2、SHC3、SHC4。SH／T 3501《石油(you)(you)(you)化(hua)工(gong)(gong)(gong)有毒、可(ke)燃介質鋼制管(guan)(guan)道工(gong)(gong)(gong)程施工(gong)(gong)(gong)及(ji)驗收規(gui)范(fan)》包括(kuo)：SHA1、SHA2、SHA3、SHA4、SHB1、SHB2、SHB3、SHB4。新版(ban)的(de)(de)石油(you)(you)(you)化(hua)工(gong)(gong)(gong)管(guan)(guan)道分級（類）的(de)(de)流體(ti)毒性將依據《危(wei)險(xian)化(hua)學品目(mu)錄(lu)》規(gui)定(ding)的(de)(de)毒性。