防(fang)(fang)腐(fu)保溫(wen)工(gong)程屬于建筑施(shi)工(gong)專(zhuan)業(ye)(ye)承(cheng)包(bao)序列，該類(lei)型企業(ye)(ye)資(zi)(zi)質(zhi)分為一(yi)級、二級、三(san)(san)級三(san)(san)個(ge)等級。防(fang)(fang)腐(fu)保溫(wen)工(gong)程資(zi)(zi)質(zhi)新(xin)辦(ban)(ban)(ban)企業(ye)(ye)，必須從三(san)(san)級開(kai)始辦(ban)(ban)(ban)理(li)申(shen)請，若(ruo)想辦(ban)(ban)(ban)理(li)更高(gao)級別，只有(you)到達年限(xian)之后(hou)辦(ban)(ban)(ban)理(li)防(fang)(fang)腐(fu)保溫(wen)工(gong)程資(zi)(zi)質(zhi)升級。一(yi)級企業(ye)(ye): 可(ke)承(cheng)擔各類(lei)防(fang)(fang)腐(fu)保溫(wen)工(gong)程的施(shi)工(gong)。二級企業(ye)(ye): 可(ke)承(cheng)擔單項合(he)同(tong)(tong)額(e)不(bu)超(chao)過企業(ye)(ye)注(zhu)冊(ce)資(zi)(zi)本(ben)金5倍的各類(lei)防(fang)(fang)腐(fu)保溫(wen)工(gong)程的施(shi)工(gong)。三(san)(san)級企業(ye)(ye): 可(ke)承(cheng)擔單項合(he)同(tong)(tong)額(e)不(bu)超(chao)過企業(ye)(ye)注(zhu)冊(ce)資(zi)(zi)本(ben)金5倍的各類(lei)防(fang)(fang)腐(fu)保溫(wen)工(gong)程的施(shi)工(gong)。資(zi)(zi)質(zhi)新(xin)辦(ban)(ban)(ban)一(yi)般情況(kuang)下資(zi)(zi)質(zhi)證書(shu)有(you)效期是五年，在快(kuai)要(yao)到期的時候企業(ye)(ye)就要(yao)準備(bei)資(zi)(zi)質(zhi)延續(xu)資(zi)(zi)料，一(yi)旦過期，資(zi)(zi)質(zhi)就自(zi)動注(zhu)銷(xiao)。