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無縫鋼(gang)(gang)(gang)管1. 鋼(gang)(gang)(gang)材(cai)(cai)(cai)的(de)(de)理論重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang) 鋼(gang)(gang)(gang)材(cai)(cai)(cai)的(de)(de)理論重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)是按鋼(gang)(gang)(gang)材(cai)(cai)(cai)的(de)(de)公(gong)稱(cheng)尺寸(cun)和密度（過(guo)去稱(cheng)為(wei)(wei)(wei)比重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)）計(ji)(ji)(ji)(ji)算(suan)得出的(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)稱(cheng)之(zhi)為(wei)(wei)(wei)理論重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)。這與鋼(gang)(gang)(gang)材(cai)(cai)(cai)的(de)(de)長度尺寸(cun)、截面面積和尺寸(cun)允許(xu)偏(pian)差有直接關系。由于鋼(gang)(gang)(gang)材(cai)(cai)(cai)在制(zhi)造過(guo)程(cheng)中(zhong)的(de)(de)允許(xu)偏(pian)差，因此用(yong)公(gong)式(shi)計(ji)(ji)(ji)(ji)算(suan)的(de)(de)理論重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)與實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)有一定出入，所(suo)以(yi)只作為(wei)(wei)(wei)估算(suan)時(shi)的(de)(de)參(can)考。 2. 鋼(gang)(gang)(gang)材(cai)(cai)(cai)的(de)(de)實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang) 鋼(gang)(gang)(gang)材(cai)(cai)(cai)實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)是指鋼(gang)(gang)(gang)材(cai)(cai)(cai)以(yi)實(shi)(shi)(shi)際(ji)稱(cheng)量(liang)(liang)(liang)(liang)(liang)(liang)（過(guo)磅(bang)）所(suo)得的(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)，稱(cheng)之(zhi)為(wei)(wei)(wei)實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)。實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)要比理論重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)準(zhun)確。 3. 鋼(gang)(gang)(gang)材(cai)(cai)(cai)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)計(ji)(ji)(ji)(ji)算(suan)方(fang)法(fa) ⑴毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong) 是“凈(jing)(jing)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)”的(de)(de)對稱(cheng)，是鋼(gang)(gang)(gang)材(cai)(cai)(cai)本(ben)身和包(bao)裝(zhuang)材(cai)(cai)(cai)料(liao)合計(ji)(ji)(ji)(ji)的(de)(de)總重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)。運(yun)(yun)輸企業計(ji)(ji)(ji)(ji)算(suan)運(yun)(yun)費(fei)(fei)時(shi)按毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)計(ji)(ji)(ji)(ji)算(suan)。但(dan)鋼(gang)(gang)(gang)材(cai)(cai)(cai)購(gou)銷(xiao)中(zhong)是按凈(jing)(jing)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)計(ji)(ji)(ji)(ji)算(suan)。 ⑵凈(jing)(jing)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong) 是“毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)”的(de)(de)對稱(cheng)。鋼(gang)(gang)(gang)材(cai)(cai)(cai)毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)減去包(bao)裝(zhuang)材(cai)(cai)(cai)料(liao)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)后(hou)的(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)，即實(shi)(shi)(shi)際(ji)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)，稱(cheng)之(zhi)為(wei)(wei)(wei)凈(jing)(jing)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)。在鋼(gang)(gang)(gang)材(cai)(cai)(cai)購(gou)銷(xiao)中(zhong)一般按凈(jing)(jing)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)計(ji)(ji)(ji)(ji)算(suan)。 ⑶皮重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong) 鋼(gang)(gang)(gang)材(cai)(cai)(cai)包(bao)裝(zhuang)材(cai)(cai)(cai)料(liao)的(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)，稱(cheng)之(zhi)為(wei)(wei)(wei)皮重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)。 ⑷重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)噸 按鋼(gang)(gang)(gang)材(cai)(cai)(cai)毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)計(ji)(ji)(ji)(ji)算(suan)運(yun)(yun)費(fei)(fei)時(shi)使(shi)用(yong)的(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)單位(wei)。其(qi)法(fa)定計(ji)(ji)(ji)(ji)量(liang)(liang)(liang)(liang)(liang)(liang)單位(wei)為(wei)(wei)(wei)噸（1000kg），還有長噸（英制(zhi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)單位(wei)1016.16kg）、短噸（美制(zhi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)單位(wei)907.18kg）。 ⑸計(ji)(ji)(ji)(ji)費(fei)(fei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang) 亦(yi)稱(cheng)“計(ji)(ji)(ji)(ji)費(fei)(fei)噸”或“運(yun)(yun)費(fei)(fei)噸”。運(yun)(yun)輸部門收取運(yun)(yun)費(fei)(fei)的(de)(de)鋼(gang)(gang)(gang)材(cai)(cai)(cai)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)。不(bu)同的(de)(de)運(yun)(yun)輸方(fang)式(shi)，有不(bu)同的(de)(de)計(ji)(ji)(ji)(ji)算(suan)標準(zhun)和方(fang)法(fa)。如鐵(tie)路(lu)整車運(yun)(yun)輸，一般以(yi)所(suo)使(shi)用(yong)的(de)(de)貨車標記載(zai)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)作為(wei)(wei)(wei)計(ji)(ji)(ji)(ji)費(fei)(fei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)。公(gong)路(lu)運(yun)(yun)輸則是結合車輛的(de)(de)載(zai)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)噸位(wei)收取運(yun)(yun)費(fei)(fei)。鐵(tie)路(lu)、公(gong)路(lu)的(de)(de)零擔，則以(yi)毛重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)若(ruo)干(gan)公(gong)斤(jin)為(wei)(wei)(wei)起碼計(ji)(ji)(ji)(ji)費(fei)(fei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)(liang)，不(bu)足時(shi)進(jin)整。

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