在GB50974《消(xiao)防給水及消(xiao)火栓系(xi)統(tong)(tong)技術規范》埋地管(guan)道(dao)，當(dang)(dang)系(xi)統(tong)(tong)工(gong)(gong)作壓(ya)力不大(da)于(yu)1.20MPa時，宜采用球(qiu)墨鑄鐵管(guan)或鋼絲網骨(gu)架(jia)塑料(liao)復(fu)合管(guan)給水管(guan)道(dao)；當(dang)(dang)系(xi)統(tong)(tong)工(gong)(gong)作壓(ya)力大(da)于(yu)1.20MPa小于(yu)1.60MPa時，宜采用鋼絲網骨(gu)架(jia)塑料(liao)復(fu)合管(guan)、加厚鋼管(guan)和無(wu)縫鋼管(guan)；當(dang)(dang)系(xi)統(tong)(tong)工(gong)(gong)作壓(ya)力大(da)于(yu)1.60MPa時，宜采用無(wu)縫鋼管(guan)。鋼管(guan)連(lian)接宜采用溝槽連(lian)接件（卡箍）和法蘭，當(dang)(dang)采用溝槽連(lian)接件連(lian)接時，公(gong)稱(cheng)直徑(jing)小于(yu)等于(yu)DN250的溝槽式管(guan)接頭(tou)系(xi)統(tong)(tong)工(gong)(gong)作壓(ya)力不應大(da)于(yu)2.50MPa，公(gong)稱(cheng)直徑(jing)大(da)于(yu)等于(yu)DN300的溝槽式管(guan)接頭(tou)系(xi)統(tong)(tong)工(gong)(gong)作壓(ya)力不應大(da)于(yu)1.60MPa。

  常用(yong)地下管道材料見表4-21。

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