異型(xing)(xing)無(wu)縫鋼管廣(guang)泛用于(yu)各種結(jie)構件、工具(ju)和(he)機械零部件。和(he)圓管相比，異型(xing)(xing)管一般都(dou)有較大的慣性矩和(he)截面模數，有較大的抗彎(wan)抗扭(niu)能力，可以大大減輕結(jie)構重量(liang)，節約鋼材。

異型(xing)管一般(ban)是根據(ju)斷截面(mian)來(lai)區分的，按材(cai)料(liao)來(lai)說(shuo)又可分為(wei)無縫鋼管異型(xing)管，鋁合(he)金(jin)異型(xing)管，塑料(liao)異型(xing)管。下面(mian)主要介紹一下鋼管異型(xing)管。

鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)異(yi)型管(guan)(guan)(guan)(guan)(guan)可(ke)分(fen)為橢圓形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、三角(jiao)(jiao)形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、六角(jiao)(jiao)形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、菱形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、八角(jiao)(jiao)形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、半(ban)圓形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)圓，不等邊六角(jiao)(jiao)形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、五瓣梅花形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、雙凸形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、雙凹形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、瓜(gua)子形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、圓錐形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、波紋形(xing)(xing)(xing)異(yi)型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、燈籠型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。