在(zai)GB50974《消防給水及消火栓系(xi)(xi)統技(ji)術(shu)規(gui)范》埋地管(guan)(guan)(guan)道，當(dang)(dang)系(xi)(xi)統工(gong)(gong)作(zuo)壓力(li)(li)不大(da)于(yu)(yu)(yu)(yu)1.20MPa時(shi)(shi)，宜采(cai)用(yong)(yong)球墨鑄(zhu)鐵管(guan)(guan)(guan)或鋼(gang)絲網骨(gu)架(jia)塑(su)料復合(he)管(guan)(guan)(guan)給水管(guan)(guan)(guan)道；當(dang)(dang)系(xi)(xi)統工(gong)(gong)作(zuo)壓力(li)(li)大(da)于(yu)(yu)(yu)(yu)1.20MPa小于(yu)(yu)(yu)(yu)1.60MPa時(shi)(shi)，宜采(cai)用(yong)(yong)鋼(gang)絲網骨(gu)架(jia)塑(su)料復合(he)管(guan)(guan)(guan)、加厚鋼(gang)管(guan)(guan)(guan)和無縫鋼(gang)管(guan)(guan)(guan)；當(dang)(dang)系(xi)(xi)統工(gong)(gong)作(zuo)壓力(li)(li)大(da)于(yu)(yu)(yu)(yu)1.60MPa時(shi)(shi)，宜采(cai)用(yong)(yong)無縫鋼(gang)管(guan)(guan)(guan)。鋼(gang)管(guan)(guan)(guan)連接(jie)宜采(cai)用(yong)(yong)溝(gou)槽連接(jie)件（卡(ka)箍(gu)）和法蘭(lan)，當(dang)(dang)采(cai)用(yong)(yong)溝(gou)槽連接(jie)件連接(jie)時(shi)(shi)，公(gong)稱直徑小于(yu)(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)(yu)DN250的溝(gou)槽式管(guan)(guan)(guan)接(jie)頭(tou)系(xi)(xi)統工(gong)(gong)作(zuo)壓力(li)(li)不應大(da)于(yu)(yu)(yu)(yu)2.50MPa，公(gong)稱直徑大(da)于(yu)(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)(yu)DN300的溝(gou)槽式管(guan)(guan)(guan)接(jie)頭(tou)系(xi)(xi)統工(gong)(gong)作(zuo)壓力(li)(li)不應大(da)于(yu)(yu)(yu)(yu)1.60MPa。

  常用地下管道材料見表4-21。

  這些材(cai)料選用(yong)的設計(ji)要(yao)求(qiu)，也影響裝(zhuang)置、罐區的布置。