通風管道是一種(zhong)空心方形(xing)(xing)的截面(mian)輕型(xing)薄壁(bi)鋼管(guan)，也稱為(wei)鋼制(zhi)冷(leng)(leng)彎(wan)型(xing)材。它(ta)是以Q235熱(re)(re)軋或(huo)冷(leng)(leng)軋帶鋼或(huo)卷板為(wei)母材經(jing)(jing)冷(leng)(leng)彎(wan)曲加(jia)工成(cheng)(cheng)型(xing)后再經(jing)(jing)高頻焊接(jie)制(zhi)成(cheng)(cheng)的方形(xing)(xing)截面(mian)形(xing)(xing)狀(zhuang)尺(chi)寸的型(xing)鋼。熱(re)(re)軋特厚(hou)壁(bi)方管(guan)除壁(bi)厚(hou)增(zeng)厚(hou)外情況,其(qi)角部尺(chi)寸和邊部平(ping)直度均達到甚(shen)至超過電阻焊冷(leng)(leng)成(cheng)(cheng)型(xing)方管(guan)的水平(ping)。綜合力學(xue)性(xing)(xing)(xing)能(neng)好，焊接(jie)性(xing)(xing)(xing)，冷(leng)(leng)，熱(re)(re)加(jia)工性(xing)(xing)(xing)能(neng)和耐腐(fu)蝕性(xing)(xing)(xing)能(neng)均好，具有良好的低溫韌性(xing)(xing)(xing)。

通風管道的用途(tu)有建(jian)筑(zhu)，機(ji)(ji)械(xie)(xie)制造，鋼鐵建(jian)設(she)等項目， 造船，太(tai)陽能發電(dian)支架，鋼結構工程，電(dian)力(li)工程，電(dian)廠(chang)，農業和(he)化學機(ji)(ji)械(xie)(xie)，玻璃(li)幕(mu)墻，汽(qi)車底盤，機(ji)(ji)場,鍋爐(lu)建(jian)造，高速路欄桿(gan)，房屋建(jian)筑(zhu)，壓力(li)容(rong)器，石油(you)儲(chu)罐，橋梁，電(dian)站設(she)備，起(qi)重(zhong)運輸機(ji)(ji)械(xie)(xie)及(ji)其他較高載荷的焊接結構件等。