我們在清洗成都熱鍍鋅方矩管的時候，是可以酸洗的，經過酸洗之后，我們還要讓(rang)他(ta)們經(jing)過(guo)一個(ge)氯(lv)化(hua)銨(an)或氯(lv)化(hua)鋅水溶液(ye)進行一個(ge)再一次(ci)的清洗的，后面在(zai)將(jiang)他(ta)們放置到熱浸(jin)鍍槽里(li)面。經(jing)過(guo)了這么一番的維護步(bu)驟我們的這個(ge)熱鍍鋅方管是可以使用很(hen)久的時(shi)間的。

熱(re)鍍鋅方管均勻變(bian)(bian)形(xing)是物體變(bian)(bian)形(xing)的(de)簡單情(qing)況(kuang)，其(qi)特點是：平(ping)(ping)面(mian)與敘線在變(bian)(bian)形(xing)后仍(reng)(reng)為平(ping)(ping)面(mian)與直線.平(ping)(ping)行線與平(ping)(ping)行平(ping)(ping)面(mian)在變(bian)(bian)形(xing)后仍(reng)(reng)保(bao)持平(ping)(ping)行，與應(ying)變(bian)(bian)主(zhu)軸(zhou)方向相垂直的(de)立方體.在均勻變(bian)(bian)形(xing)后僅有線性尺于(yu)的(de)改變(bian)(bian)而無剪變(bian)(bian)形(xing)產生，變(bian)(bian)形(xing)體若(ruo)為球面(mian).變(bian)(bian)形(xing)后則為橢球面(mian)。

由(you)此可見(jian).均勻(yun)變形(xing)的(de)特(te)征表現(xian)為物體(ti)各點的(de)位移是原始坐標(biao)的(de)線性函數，均勻(yun)變形(xing)只(zhi)有三個主應變而無剪切(qie)應變。

成都熱鍍鋅方矩管在金屬壓力加工理論中.特別是在軋管理論中.廣泛采用對數應變來表示均勻變形。對數應變較相對變形系性能更精確地表示物體的變形程度。

低(di)(di)壓流(liu)(liu)(liu)體(ti)輸(shu)(shu)送(song)用(yong)熱鍍鋅方(fang)管(guan)(guan)(guan)(guan)(guan)(guan) 也稱一般(ban)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)，俗稱黑管(guan)(guan)(guan)(guan)(guan)(guan)。是用(yong)于輸(shu)(shu)送(song)水(shui)、煤氣(qi)、空氣(qi)、油和(he)(he)取暖蒸(zheng)汽等一般(ban)較(jiao)低(di)(di)壓力流(liu)(liu)(liu)體(ti)和(he)(he)其(qi)他用(yong)途的(de)(de)焊(han)接(jie)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)接(jie)壁厚分為普(pu)通(tong)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)加厚鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan);接(jie)管(guan)(guan)(guan)(guan)(guan)(guan)端形式分為不帶(dai)螺紋(wen)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)帶(dai)螺紋(wen)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)規格用(yong)公稱口(kou)徑(jing)表示，公稱口(kou)徑(jing)是內徑(jing)的(de)(de)近似值。習慣上常用(yong)英寸表示，低(di)(di)壓流(liu)(liu)(liu)體(ti)輸(shu)(shu)送(song)用(yong)焊(han)接(jie)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)除直接(jie)用(yong)于輸(shu)(shu)送(song)流(liu)(liu)(liu)體(ti)外，還大(da)量用(yong)作(zuo)低(di)(di)壓流(liu)(liu)(liu)體(ti)輸(shu)(shu)送(song)用(yong)鍍鋅焊(han)接(jie)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)原管(guan)(guan)(guan)(guan)(guan)(guan)。