不銹鋼管按橫斷面(mian)形(xing)狀可分為圓(yuan)(yuan)管(guan)(guan)(guan)和(he)異(yi)(yi)形(xing)管(guan)(guan)(guan)。異(yi)(yi)形(xing)管(guan)(guan)(guan)有矩形(xing)管(guan)(guan)(guan)、菱(ling)形(xing)管(guan)(guan)(guan)、橢圓(yuan)(yuan)管(guan)(guan)(guan)、六(liu)方(fang)(fang)管(guan)(guan)(guan)、八方(fang)(fang)管(guan)(guan)(guan)以及各種(zhong)斷面(mian)不對(dui)稱管(guan)(guan)(guan)等(deng)。異(yi)(yi)形(xing)管(guan)(guan)(guan)廣泛(fan)地用于各種(zhong)結構(gou)件(jian)、工具和(he)機(ji)械零部(bu)件(jian)。與圓(yuan)(yuan)管(guan)(guan)(guan)相比，異(yi)(yi)形(xing)管(guan)(guan)(guan)一般都有較(jiao)大的(de)慣(guan)性矩和(he)截面(mian)模數，有較(jiao)大的(de)抗彎、抗扭能力(li)，可以大大減(jian)輕(qing)結構(gou)重(zhong)量(liang)，節約(yue)鋼材。
不銹鋼管(guan)按縱斷(duan)(duan)面形(xing)狀可分為等斷(duan)(duan)面管(guan)和變(bian)斷(duan)(duan)面管(guan)。變(bian)斷(duan)(duan)面管(guan)有錐形(xing)管(guan)、階梯形(xing)管(guan)和周(zhou)期(qi)斷(duan)(duan)面管(guan)等。
管端形狀
不銹鋼管(guan)(guan)(guan)根據管(guan)(guan)(guan)端(duan)狀(zhuang)態可分(fen)為(wei)(wei)光管(guan)(guan)(guan)和車(che)絲(si)(si)(si)(si)管(guan)(guan)(guan)（帶螺紋(wen)鋼管(guan)(guan)(guan)）。車(che)絲(si)(si)(si)(si)管(guan)(guan)(guan)又可分(fen)為(wei)(wei)普(pu)通(tong)車(che)絲(si)(si)(si)(si)管(guan)(guan)(guan)（輸送水、煤氣等低壓用(yong)(yong)管(guan)(guan)(guan)，采(cai)用(yong)(yong)普(pu)通(tong)圓(yuan)柱或(huo)圓(yuan)錐管(guan)(guan)(guan)螺紋(wen)連(lian)接）和特(te)殊螺紋(wen)管(guan)(guan)(guan)（石(shi)油、地質鉆(zhan)探(tan)用(yong)(yong)管(guan)(guan)(guan)，對(dui)于重(zhong)要的車(che)絲(si)(si)(si)(si)管(guan)(guan)(guan)，采(cai)用(yong)(yong)特(te)殊螺紋(wen)連(lian)接），對(dui)一些特(te)殊用(yong)(yong)管(guan)(guan)(guan)，為(wei)(wei)彌補螺紋(wen)對(dui)管(guan)(guan)(guan)端(duan)強度的影響，通(tong)常在車(che)絲(si)(si)(si)(si)前先進行管(guan)(guan)(guan)端(duan)加厚（內加厚、外加厚或(huo)內外加厚）。
