在GB50974《消防給(gei)水及(ji)消火栓系(xi)(xi)統(tong)(tong)技術規范(fan)》埋地管(guan)(guan)(guan)道，當系(xi)(xi)統(tong)(tong)工(gong)作壓(ya)力(li)(li)(li)不大(da)(da)(da)(da)于(yu)(yu)1.20MPa時(shi)，宜采(cai)用(yong)球墨鑄(zhu)鐵管(guan)(guan)(guan)或鋼(gang)絲(si)網骨(gu)架塑料復合管(guan)(guan)(guan)給(gei)水管(guan)(guan)(guan)道；當系(xi)(xi)統(tong)(tong)工(gong)作壓(ya)力(li)(li)(li)大(da)(da)(da)(da)于(yu)(yu)1.20MPa小于(yu)(yu)1.60MPa時(shi)，宜采(cai)用(yong)鋼(gang)絲(si)網骨(gu)架塑料復合管(guan)(guan)(guan)、加厚鋼(gang)管(guan)(guan)(guan)和無(wu)縫鋼(gang)管(guan)(guan)(guan)；當系(xi)(xi)統(tong)(tong)工(gong)作壓(ya)力(li)(li)(li)大(da)(da)(da)(da)于(yu)(yu)1.60MPa時(shi)，宜采(cai)用(yong)無(wu)縫鋼(gang)管(guan)(guan)(guan)。鋼(gang)管(guan)(guan)(guan)連(lian)接宜采(cai)用(yong)溝(gou)槽(cao)(cao)連(lian)接件(jian)（卡箍）和法蘭(lan)，當采(cai)用(yong)溝(gou)槽(cao)(cao)連(lian)接件(jian)連(lian)接時(shi)，公(gong)稱(cheng)直徑小于(yu)(yu)等于(yu)(yu)DN250的溝(gou)槽(cao)(cao)式管(guan)(guan)(guan)接頭(tou)(tou)系(xi)(xi)統(tong)(tong)工(gong)作壓(ya)力(li)(li)(li)不應(ying)大(da)(da)(da)(da)于(yu)(yu)2.50MPa，公(gong)稱(cheng)直徑大(da)(da)(da)(da)于(yu)(yu)等于(yu)(yu)DN300的溝(gou)槽(cao)(cao)式管(guan)(guan)(guan)接頭(tou)(tou)系(xi)(xi)統(tong)(tong)工(gong)作壓(ya)力(li)(li)(li)不應(ying)大(da)(da)(da)(da)于(yu)(yu)1.60MPa。

  常(chang)用地下管道材料見表4-21。

  這(zhe)些材料選用的設(she)計要求，也影響裝置(zhi)、罐區的布置(zhi)。