在GB50974《消防給水(shui)及消火栓系(xi)統(tong)(tong)(tong)(tong)技術規范》埋地管(guan)道，當系(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)(zuo)壓(ya)力(li)不(bu)大(da)(da)(da)于(yu)1.20MPa時，宜采用(yong)球墨(mo)鑄鐵(tie)管(guan)或鋼絲(si)網骨(gu)架塑料復合管(guan)給水(shui)管(guan)道；當系(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)(zuo)壓(ya)力(li)大(da)(da)(da)于(yu)1.20MPa小(xiao)于(yu)1.60MPa時，宜采用(yong)鋼絲(si)網骨(gu)架塑料復合管(guan)、加厚鋼管(guan)和(he)無縫(feng)鋼管(guan)；當系(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)(zuo)壓(ya)力(li)大(da)(da)(da)于(yu)1.60MPa時，宜采用(yong)無縫(feng)鋼管(guan)。鋼管(guan)連(lian)接(jie)宜采用(yong)溝槽連(lian)接(jie)件(jian)（卡(ka)箍）和(he)法蘭，當采用(yong)溝槽連(lian)接(jie)件(jian)連(lian)接(jie)時，公(gong)稱(cheng)直(zhi)(zhi)徑(jing)(jing)小(xiao)于(yu)等于(yu)DN250的(de)溝槽式管(guan)接(jie)頭系(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)(zuo)壓(ya)力(li)不(bu)應大(da)(da)(da)于(yu)2.50MPa，公(gong)稱(cheng)直(zhi)(zhi)徑(jing)(jing)大(da)(da)(da)于(yu)等于(yu)DN300的(de)溝槽式管(guan)接(jie)頭系(xi)統(tong)(tong)(tong)(tong)工(gong)作(zuo)(zuo)壓(ya)力(li)不(bu)應大(da)(da)(da)于(yu)1.60MPa。

  常用地下(xia)管道材料見表4-21。

  這些材料(liao)選用(yong)的設計要(yao)求，也(ye)影(ying)響裝置、罐區的布置。