異型無縫鋼管(guan)廣泛用于各種結(jie)構件、工具和機械(xie)零部件。和圓管(guan)相比(bi)，異型管(guan)一般都有較大的(de)慣性矩和截面模數，有較大的(de)抗彎抗扭能力，可以大大減輕結(jie)構重量，節(jie)約鋼材(cai)。

異型(xing)(xing)管(guan)(guan)(guan)(guan)一般是根據斷截面(mian)來(lai)區分的，按材料來(lai)說又可分為無縫(feng)鋼管(guan)(guan)(guan)(guan)異型(xing)(xing)管(guan)(guan)(guan)(guan)，鋁合金異型(xing)(xing)管(guan)(guan)(guan)(guan)，塑料異型(xing)(xing)管(guan)(guan)(guan)(guan)。下(xia)面(mian)主要介(jie)紹(shao)一下(xia)鋼管(guan)(guan)(guan)(guan)異型(xing)(xing)管(guan)(guan)(guan)(guan)。

鋼(gang)(gang)管(guan)(guan)(guan)(guan)異(yi)(yi)(yi)(yi)型(xing)管(guan)(guan)(guan)(guan)可分為橢圓形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、三(san)角形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、六角形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、菱形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、八角形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、半圓形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)圓，不(bu)等邊六角形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、五(wu)瓣(ban)梅花形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、雙(shuang)凸(tu)形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、雙(shuang)凹形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、瓜子形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、圓錐(zhui)形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、波(bo)紋形(xing)(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、燈籠型(xing)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。