在GB50974《消防(fang)給水(shui)及消火栓系統(tong)(tong)技(ji)術規范》埋地(di)管(guan)(guan)道，當系統(tong)(tong)工(gong)(gong)(gong)作(zuo)壓(ya)(ya)力(li)不大(da)于(yu)(yu)1.20MPa時，宜(yi)采(cai)用球(qiu)墨鑄鐵管(guan)(guan)或鋼絲(si)網(wang)骨架(jia)塑(su)料復(fu)合管(guan)(guan)給水(shui)管(guan)(guan)道；當系統(tong)(tong)工(gong)(gong)(gong)作(zuo)壓(ya)(ya)力(li)大(da)于(yu)(yu)1.20MPa小于(yu)(yu)1.60MPa時，宜(yi)采(cai)用鋼絲(si)網(wang)骨架(jia)塑(su)料復(fu)合管(guan)(guan)、加厚鋼管(guan)(guan)和無(wu)(wu)縫鋼管(guan)(guan)；當系統(tong)(tong)工(gong)(gong)(gong)作(zuo)壓(ya)(ya)力(li)大(da)于(yu)(yu)1.60MPa時，宜(yi)采(cai)用無(wu)(wu)縫鋼管(guan)(guan)。鋼管(guan)(guan)連接(jie)(jie)(jie)宜(yi)采(cai)用溝(gou)(gou)槽連接(jie)(jie)(jie)件（卡箍(gu)）和法蘭，當采(cai)用溝(gou)(gou)槽連接(jie)(jie)(jie)件連接(jie)(jie)(jie)時，公稱直(zhi)徑小于(yu)(yu)等(deng)于(yu)(yu)DN250的溝(gou)(gou)槽式管(guan)(guan)接(jie)(jie)(jie)頭系統(tong)(tong)工(gong)(gong)(gong)作(zuo)壓(ya)(ya)力(li)不應大(da)于(yu)(yu)2.50MPa，公稱直(zhi)徑大(da)于(yu)(yu)等(deng)于(yu)(yu)DN300的溝(gou)(gou)槽式管(guan)(guan)接(jie)(jie)(jie)頭系統(tong)(tong)工(gong)(gong)(gong)作(zuo)壓(ya)(ya)力(li)不應大(da)于(yu)(yu)1.60MPa。

  常用地下(xia)管道材料見表4-21。

  這些材料(liao)選用的(de)設計要求，也影(ying)響裝置(zhi)、罐區(qu)的(de)布置(zhi)。