GB 50235《工(gong)(gong)(gong)(gong)(gong)業(ye)金屬(shu)管道(dao)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)施(shi)工(gong)(gong)(gong)(gong)(gong)規(gui)范(fan)》配套使用GB50184《工(gong)(gong)(gong)(gong)(gong)業(ye)金屬(shu)管道(dao)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)施(shi)工(gong)(gong)(gong)(gong)(gong)質量驗收(shou)規(gui)》和(he)GB 50236《現場設(she)備、工(gong)(gong)(gong)(gong)(gong)業(ye)管道(dao)焊接工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)施(shi)工(gong)(gong)(gong)(gong)(gong)規(gui)范(fan)》。工(gong)(gong)(gong)(gong)(gong)業(ye)金屬(shu)壓力(li)管道(dao)應(ying)按(an)TSG D001《壓力(li)管道(dao)安全(quan)技術監察規(gui)程(cheng)(cheng)(cheng)-工(gong)(gong)(gong)(gong)(gong)業(ye)管道(dao)》的(de)規(gui)定劃(hua)分(fen)為GC1、GC2、GC3三個等級(ji)。除(chu)壓力(li)管道(dao)以(yi)外的(de)其他管道(dao)，應(ying)按(an)C類(lei)(lei)(lei)流(liu)體管道(dao)和(he)D類(lei)(lei)(lei)流(liu)體管道(dao)分(fen)類(lei)(lei)(lei)。D類(lei)(lei)(lei)流(liu)體管道(dao)指不(bu)可燃、無毒(du)或毒(du)性為輕度危害程(cheng)(cheng)(cheng)度、設(she)計壓力(li)小于(yu)或等于(yu)1.0MPa。和(he)設(she)計溫(wen)度高于(yu)一20℃但不(bu)高于(yu)185℃的(de)流(liu)體管道(dao)。C類(lei)(lei)(lei)流(liu)體管道(dao)指不(bu)包括D類(lei)(lei)(lei)流(liu)體的(de)不(bu)可燃、無毒(du)或毒(du)性為輕度危害程(cheng)(cheng)(cheng)度的(de)流(liu)體管道(dao)。