方(fang)矩(ju)(ju)管(guan)(guan)：是(shi)方(fang)形(xing)管(guan)(guan)材和矩(ju)(ju)形(xing)管(guan)(guan)材的一種稱(cheng)呼(hu)，也(ye)就是(shi)邊(bian)長(chang)相等(deng)和不相等(deng)的的鋼管(guan)(guan)。是(shi)帶鋼經過工(gong)藝(yi)處理(li)卷制(zhi)而(er)成(cheng)。一般(ban)是(shi)把帶鋼經過拆包，平整，卷曲，焊接形(xing)成(cheng)圓管(guan)(guan)，再由圓管(guan)(guan)軋(ya)制(zhi)成(cheng)方(fang)形(xing)管(guan)(guan)然后剪切成(cheng)需要長(chang)度。用(yong)于(yu)工(gong)程建(jian)筑、玻(bo)璃幕(mu)墻、門窗裝(zhuang)飾、鋼結構、護欄、機械(xie)制(zhi)造(zao)(zao)(zao)、汽(qi)車(che)制(zhi)造(zao)(zao)(zao)、家電制(zhi)造(zao)(zao)(zao)、造(zao)(zao)(zao)船、集裝(zhuang)箱制(zhi)造(zao)(zao)(zao)、電力(li)、農業(ye)建(jian)設(she)、農業(ye)大棚、自行車(che)架(jia)、摩托車(che)架(jia)、貨架(jia)、健身器材、休閑和旅游用(yong)品、鋼家具、各(ge)種規格的石油套管(guan)(guan)、油管(guan)(guan)和管(guan)(guan)線(xian)管(guan)(guan)、水(shui)、燃氣(qi)、污水(shui)、空氣(qi)、采暖等(deng)流體輸(shu)送、消防用(yong)及支(zhi)架(jia)、建(jian)筑業(ye)等(deng)。