2019-07-16 城市燃氣管道設計的基本步驟是什么?

1、管(guan)道連接(jie) 應(ying)盡量采用(yong)(yong)(yong)焊接(jie)，對于熱(re)(re)(re)煤氣(qi)管(guan)道可釆(bian)(bian)用(yong)(yong)(yong)法(fa)蘭(lan)連接(jie)。 法(fa)蘭(lan)密(mi)封(feng)面應(ying)釆(bian)(bian)用(yong)(yong)(yong)突(tu)面形式(RF)，法(fa)蘭(lan)材質宜選(xuan)用(yong)(yong)(yong)20鎮靜鋼(gang)。熱(re)(re)(re)煤氣(qi)法(fa)蘭(lan)墊片采用(yong)(yong)(yong)耐熱(re)(re)(re)耐油墊。 熱(re)(re)(re)煤氣(qi)系統(tong)緊固件采用(yong)(yong)(yong)六角螺栓(shuan)或雙頭螺栓(shuan)，材料采用(yong)(yong)(yong)合金鋼(gang)(如(ru)35CrMo等)。 管(guan)道布置(zhi)...