如何確定管子標準體系
管(guan)(guan)(guan)子標(biao)(biao)準(zhun)應(ying)根據工(gong)程實(shi)際要(yao)(yao)(yao)求來定(ding)，只有在管(guan)(guan)(guan)子標(biao)(biao)準(zhun)確定(ding)后(hou)，其他(ta)管(guan)(guan)(guan)配件(jian)(jian)標(biao)(biao)準(zhun)才能確定(ding)，所以管(guan)(guan)(guan)子標(biao)(biao)準(zhun)和材質(zhi)的(de)選(xuan)擇是管(guan)(guan)(guan)道組成(cheng)(cheng)件(jian)(jian)選(xuan)擇的(de)基礎(chu)。 選(xuan)用國(guo)內(nei)材料(liao)(liao)的(de)管(guan)(guan)(guan)道及(ji)管(guan)(guan)(guan)道組成(cheng)(cheng)件(jian)(jian)均(jun)應(ying)滿足GB、SH、HG等標(biao)(biao)準(zhun)中要(yao)(yao)(yao)求的(de)尺寸、材料(liao)(liao)及(ji)其他(ta)要(yao)(yao)(yao)求；選(xuan)用ASTM材料(liao)(liao)的(de)管(guan)(guan)(guan)道及(ji)管(guan)(guan)(guan)道組成(cheng)(cheng)件(jian)(jian)都...
