在(zai)GB50974《消防給水及消火栓系(xi)(xi)統(tong)技術(shu)規(gui)范》埋地管(guan)(guan)道，當系(xi)(xi)統(tong)工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力不大(da)于(yu)1.20MPa時，宜采(cai)(cai)用(yong)球墨鑄鐵管(guan)(guan)或鋼(gang)絲網(wang)骨架(jia)塑料(liao)復(fu)合管(guan)(guan)給水管(guan)(guan)道；當系(xi)(xi)統(tong)工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力大(da)于(yu)1.20MPa小于(yu)1.60MPa時，宜采(cai)(cai)用(yong)鋼(gang)絲網(wang)骨架(jia)塑料(liao)復(fu)合管(guan)(guan)、加厚(hou)鋼(gang)管(guan)(guan)和(he)無(wu)縫(feng)鋼(gang)管(guan)(guan)；當系(xi)(xi)統(tong)工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力大(da)于(yu)1.60MPa時，宜采(cai)(cai)用(yong)無(wu)縫(feng)鋼(gang)管(guan)(guan)。鋼(gang)管(guan)(guan)連(lian)接宜采(cai)(cai)用(yong)溝(gou)槽(cao)(cao)連(lian)接件（卡(ka)箍）和(he)法(fa)蘭，當采(cai)(cai)用(yong)溝(gou)槽(cao)(cao)連(lian)接件連(lian)接時，公(gong)(gong)稱(cheng)直(zhi)徑(jing)小于(yu)等于(yu)DN250的溝(gou)槽(cao)(cao)式(shi)管(guan)(guan)接頭系(xi)(xi)統(tong)工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力不應(ying)(ying)大(da)于(yu)2.50MPa，公(gong)(gong)稱(cheng)直(zhi)徑(jing)大(da)于(yu)等于(yu)DN300的溝(gou)槽(cao)(cao)式(shi)管(guan)(guan)接頭系(xi)(xi)統(tong)工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力不應(ying)(ying)大(da)于(yu)1.60MPa。

  常用地下管道材料見表4-21。

  這些材(cai)料選用的設計要(yao)求(qiu)，也影響(xiang)裝(zhuang)置、罐(guan)區的布(bu)置。