無縫鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)具有(you)中空截(jie)面(mian)，大量(liang)用(yong)(yong)(yong)作輸(shu)(shu)(shu)送(song)流體的(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道，如(ru)輸(shu)(shu)(shu)送(song)石油、天然氣、煤氣、水及(ji)某些固體物料(liao)的(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道等(deng)(deng)(deng)。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)與圓(yuan)(yuan)鋼(gang)(gang)(gang)(gang)等(deng)(deng)(deng)實心鋼(gang)(gang)(gang)(gang)材相(xiang)比，在抗彎抗扭強度相(xiang)同(tong)時(shi)，重量(liang)較輕，是(shi)一種經濟截(jie)面(mian)鋼(gang)(gang)(gang)(gang)材，廣泛(fan)用(yong)(yong)(yong)于(yu)制造結(jie)構件(jian)和(he)(he)機(ji)(ji)械零件(jian)，如(ru)石油鉆桿(gan)、汽(qi)車傳(chuan)動軸(zhou)、自行車架以(yi)及(ji)建筑(zhu)施工(gong)(gong)中用(yong)(yong)(yong)的(de)(de)鋼(gang)(gang)(gang)(gang)腳手架等(deng)(deng)(deng) 用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制造環(huan)形(xing)零件(jian)，可(ke)提高材料(liao)利(li)用(yong)(yong)(yong)率，簡化(hua)制造工(gong)(gong)序，節(jie)約材料(liao)和(he)(he)加工(gong)(gong)工(gong)(gong)時(shi)，如(ru)滾動軸(zhou)承套圈、千斤頂套等(deng)(deng)(deng)，已廣泛(fan)用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)來制造。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)還是(shi)各種常規武器不可(ke)缺少的(de)(de)材料(liao)，槍(qiang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、炮(pao)筒等(deng)(deng)(deng)都要(yao)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)來制造。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)按橫截(jie)面(mian)積形(xing)狀的(de)(de)不同(tong)可(ke)分為圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)異(yi)型管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。由于(yu)在周長相(xiang)等(deng)(deng)(deng)的(de)(de)條件(jian)下(xia)，圓(yuan)(yuan)面(mian)積 ，用(yong)(yong)(yong)圓(yuan)(yuan)形(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)可(ke)以(yi)輸(shu)(shu)(shu)送(song)更(geng)多(duo)的(de)(de)流體。此外(wai)，圓(yuan)(yuan)環(huan)截(jie)面(mian)在承受(shou)內(nei)部或外(wai)部徑向壓力時(shi)，受(shou)力較均勻，因此，絕大多(duo)數(shu)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。但是(shi)，圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)也有(you)一定的(de)(de)局(ju)限性，如(ru)在受(shou)平面(mian)彎曲的(de)(de)條件(jian)下(xia)，圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)就不如(ru)方(fang)、矩(ju)形(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)抗彎強度大，一些農機(ji)(ji)具骨(gu)架、鋼(gang)(gang)(gang)(gang)木家具等(deng)(deng)(deng)就常用(yong)(yong)(yong)方(fang)、矩(ju)形(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。根據不同(tong)用(yong)(yong)(yong)途還需有(you)其他截(jie)面(mian)形(xing)狀的(de)(de)異(yi)型鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。