我是做消(xiao)防、配電工程的(de)預算新手，廠家平時只給噸數價(jia)錢(qian)我，要我自己算。

小(xiao)弟(di)實在不是很懂，請教高手！！

如果知(zhi)道鋼管5.5元(yuan)/KG，珠(zhu)海jdg穿線(xian)管廠(chang)家，鍍鋅線(xian)管外徑為Φ20，壁厚為1.2mm

計算鍍鋅線(xian)管（元/米）的公式是不是

[(外徑-壁(bi)厚(hou))*壁(bi)厚(hou)]*0.02466*5.5元/KG？線(xian)管(guan)同鍍鋅鋼(gang)管(guan)算法一樣嗎？

鍍鋅槽橋架(jia)80mm*40mm，7.5元/KG，厚度為(wei)1.2mm

JDG熱鍍鋅穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)，不(bu)銹鋼jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)，其連接靠管(guan)(guan)(guan)件頂絲頂緊(jin)管(guan)(guan)(guan)道，防爆jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)，達到緊(jin)密連接。jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)jdg穿線(xian)(xian)(xian)(xian)(xian)管(guan)(guan)(guan)廠(chang)(chang)(chang)家(jia)(jia)(jia)

JDG鍍鋅穿(chuan)線(xian)(xian)管(guan)長度(du)分(fen)為兩種：國(guo)(guo)標(biao)線(xian)(xian)管(guan)是3.8米(mi)（實際厚度(du)，3.75m）、非標(biao)線(xian)(xian)管(guan)是2.8米(mi)（實際厚度(du)，2.75m）偏(pian)差(cha)±0.05c，非標(biao)厚度(du)偏(pian)差(cha)0.05mm，國(guo)(guo)標(biao)厚度(du)偏(pian)差(cha)0.15，量(liang)大可定做。jdg穿(chuan)線(xian)(xian)管(guan)廠(chang)家jdg穿(chuan)線(xian)(xian)管(guan)廠(chang)家jdg穿(chuan)線(xian)(xian)管(guan)廠(chang)家jdg穿(chuan)線(xian)(xian)管(guan)廠(chang)家

JDG管的性質是：

JDG管(套接緊定式鍍鋅鋼導管、電氣安裝用鋼性金屬平導管)是一種電氣線路新型保護用導管，連接套管及其金屬附件采用螺釘緊定連接技術組成的電線管路，無需做跨接地，焊接和套絲，是明敷暗敷絕緣電線保護管路的佳選擇，外觀為銀白色。被國內各大城市的商業、民用、公用等電線線路工程所采用，特別是臨時或短期使用的建筑物。jdg穿線管廠家