在(zai)GB50974《消(xiao)防給(gei)水(shui)及消(xiao)火栓系(xi)統(tong)(tong)技術規范》埋地管(guan)道，當(dang)系(xi)統(tong)(tong)工(gong)(gong)(gong)作壓(ya)(ya)(ya)力不大于(yu)1.20MPa時，宜(yi)采(cai)(cai)用(yong)球墨鑄鐵管(guan)或鋼(gang)(gang)(gang)絲網(wang)(wang)骨架(jia)塑料復(fu)合(he)管(guan)給(gei)水(shui)管(guan)道；當(dang)系(xi)統(tong)(tong)工(gong)(gong)(gong)作壓(ya)(ya)(ya)力大于(yu)1.20MPa小于(yu)1.60MPa時，宜(yi)采(cai)(cai)用(yong)鋼(gang)(gang)(gang)絲網(wang)(wang)骨架(jia)塑料復(fu)合(he)管(guan)、加厚鋼(gang)(gang)(gang)管(guan)和無(wu)縫(feng)鋼(gang)(gang)(gang)管(guan)；當(dang)系(xi)統(tong)(tong)工(gong)(gong)(gong)作壓(ya)(ya)(ya)力大于(yu)1.60MPa時，宜(yi)采(cai)(cai)用(yong)無(wu)縫(feng)鋼(gang)(gang)(gang)管(guan)。鋼(gang)(gang)(gang)管(guan)連接宜(yi)采(cai)(cai)用(yong)溝(gou)槽(cao)(cao)連接件（卡箍）和法蘭，當(dang)采(cai)(cai)用(yong)溝(gou)槽(cao)(cao)連接件連接時，公稱(cheng)直徑小于(yu)等(deng)于(yu)DN250的(de)溝(gou)槽(cao)(cao)式(shi)管(guan)接頭系(xi)統(tong)(tong)工(gong)(gong)(gong)作壓(ya)(ya)(ya)力不應(ying)大于(yu)2.50MPa，公稱(cheng)直徑大于(yu)等(deng)于(yu)DN300的(de)溝(gou)槽(cao)(cao)式(shi)管(guan)接頭系(xi)統(tong)(tong)工(gong)(gong)(gong)作壓(ya)(ya)(ya)力不應(ying)大于(yu)1.60MPa。

  常用地下管道材料見表4-21。

  這些材(cai)料(liao)選用(yong)的設計要求，也影(ying)響裝置、罐區(qu)的布置。