冷拔六角鋼管加(jia)工分為(wei)一次(ci)成(cheng)型(xing)和多次(ci)成(cheng)型(xing)2種;一次(ci)成(cheng)型(xing)加(jia)工時不銹鋼帶經(jing)過(guo)焊(han)管(guan)加(jia)工成(cheng)型(xing)生產線，由組合磨具的擠壓變(bian)形(xing)焊(han)接一次(ci)成(cheng)型(xing)出管(guan)達到設定的異型(xing)管(guan)標準。多次(ci)成(cheng)型(xing)主(zhu)要是2此成(cheng)型(xing)，是在圓(yuan)管(guan)或者方管(guan)的基(ji)礎(chu)上再次(ci)經(jing)過(guo)機加(jia)工使進(jin)入管(guan)機械變(bian)形(xing)成(cheng)為(wei)設定的異型(xing)管(guan)。

　　在產品工藝質量上前者一般要優于后者，但具體的質量和工藝要求差異不會很大，有些冷拔六角鋼管在截面(mian)異形復雜(za)程度較大而無法一次(ci)(ci)成型的(de)情況下選(xuan)擇(ze)(ze)2次(ci)(ci)或者多(duo)次(ci)(ci)成型也(ye)是目前我國不(bu)銹鋼管加工技術和設備還不(bu)能達(da)到更(geng)加先進水平的(de)恰當選(xuan)擇(ze)(ze)

　　在應用方面，冷拔六角鋼管廣泛用于各種結構件、工(gong)(gong)具和機械零部件。與(yu)不銹鋼(gang)(gang)圓(yuan)管(guan)相(xiang)比，冷(leng)拔六角鋼(gang)(gang)管(guan)一(yi)般都(dou)有較(jiao)大(da)的(de)(de)(de)慣(guan)性矩和截面(mian)模(mo)數，有較(jiao)大(da)的(de)(de)(de)抗彎抗扭能(neng)力(li)，可(ke)以(yi)大(da)大(da)減輕結構重量(liang)，節約鋼(gang)(gang)材。冷(leng)拔異(yi)型鋼(gang)(gang)管(guan)和異(yi)型鋼(gang)(gang)管(guan)，非標異(yi)型鋼(gang)(gang)管(guan)等按客(ke)戶(hu)需求可(ke)定(ding)，往(wang)往(wang)居于一(yi)切金屬(shu)壓(ya)力(li)加工(gong)(gong)廠(chang)礦之首。因此，近幾年來，我國在(zai)原來只有冷(leng)拔機的(de)(de)(de)基礎(chu)上，衛新建了輥拔、擠壓(ya)、液壓(ya)、旋壓(ya)、滾壓(ya)、連軋和回轉鍛造等幾十(shi)種生(sheng)產(chan)(chan)設備，并不斷(duan)地改進和創(chuang)造新的(de)(de)(de)設備與(yu)工(gong)(gong)藝。另外，異(yi)型鋼(gang)(gang)管(guan)技術力(li)量(liang)的(de)(de)(de)培訓和生(sheng)產(chan)(chan)技術的(de)(de)(de)研(yan)究，也(ye)是搞好(hao)異(yi)型管(guan)生(sheng)產(chan)(chan)的(de)(de)(de)關鍵(jian)。可(ke)見(jian)，大(da)力(li)開展金屬(shu)變形規律、正確進行能(neng)力(li)的(de)(de)(de)計算方法、充分發揮(hui)生(sheng)產(chan)(chan)潛(qian)力(li)、提高產(chan)(chan)品(pin)質量(liang)等理(li)論(lun)問題的(de)(de)(de)研(yan)究也(ye)是當(dang)務之急。

　　在前(qian)年，我國(guo)(guo)冷拔六角(jiao)(jiao)(jiao)(jiao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)整個行業(ye)發展(zhan)呈(cheng)現(xian)出不(bu)(bu)平衡的(de)(de)(de)(de)狀態，在當前(qian)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)產業(ye)量猛增的(de)(de)(de)(de)形(xing)(xing)(xing)(xing)勢下(xia)，原料(liao)的(de)(de)(de)(de)來(lai)源十(shi)分(fen)的(de)(de)(de)(de)緊張，國(guo)(guo)內的(de)(de)(de)(de)供應量嚴(yan)重(zhong)(zhong)不(bu)(bu)足(zu)，基本上(shang)主要依(yi)靠進(jin)(jin)口原來(lai)來(lai)維持發展(zhan)。在鐵礦(kuang)石上(shang)漲的(de)(de)(de)(de)情況(kuang)下(xia)也同(tong)時(shi)增加(jia)(jia)了(le)不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)成(cheng)本，對于(yu)如今(jin)市(shi)場競爭(zheng)激烈的(de)(de)(de)(de)情況(kuang)下(xia)，很難競爭(zheng)，給(gei)企(qi)業(ye)的(de)(de)(de)(de)生產經營造成(cheng)困難。鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)材市(shi)場是我國(guo)(guo)眾多(duo)行業(ye)中(zhong)最重(zhong)(zhong)要的(de)(de)(de)(de)的(de)(de)(de)(de)一個行業(ye)之一，異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)市(shi)場的(de)(de)(de)(de)穩定(ding)也預(yu)示著整個鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)材市(shi)場的(de)(de)(de)(de)穩定(ding)，這(zhe)是中(zhong)國(guo)(guo)經濟(ji)社會發展(zhan)的(de)(de)(de)(de)根(gen)本保障。并且(qie)由于(yu)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)應用(yong)范圍十(shi)分(fen)廣泛，更加(jia)(jia)促進(jin)(jin)了(le)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產的(de)(de)(de)(de)迅速(su)發展(zhan)。加(jia)(jia)之目前(qian)國(guo)(guo)內工業(ye)化、信(xin)息(xi)化、城(cheng)鎮化、國(guo)(guo)際化互(hu)動并進(jin)(jin)，將形(xing)(xing)(xing)(xing)成(cheng)巨大的(de)(de)(de)(de)經濟(ji)增長合力;加(jia)(jia)入世界貿易組織(zhi)使中(zhong)國(guo)(guo)經濟(ji)與(yu)世界經濟(ji)迅速(su)融合，擴大了(le)中(zhong)國(guo)(guo)產品的(de)(de)(de)(de)市(shi)場規模，激發了(le)企(qi)業(ye)活力。，異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)目前(qian)在北(bei)京、江蘇、廣東等(deng)地已經有(you)了(le)專業(ye)的(de)(de)(de)(de)生產廠(chang)家(jia)，并被應用(yong)于(yu)飲用(yong)水系統(tong)(tong)、熱水系統(tong)(tong)、供暖(nuan)系統(tong)(tong)。冷拔六角(jiao)(jiao)(jiao)(jiao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)一般是根(gen)據(ju)斷截(jie)面(mian)(mian)、整體(ti)形(xing)(xing)(xing)(xing)狀來(lai)區分(fen)的(de)(de)(de)(de)，一般可分(fen)為：橢圓形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、三角(jiao)(jiao)(jiao)(jiao)形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、六角(jiao)(jiao)(jiao)(jiao)形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、菱形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)花紋管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)U型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、D型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、S型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、八角(jiao)(jiao)(jiao)(jiao)形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、半(ban)圓形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)圓，不(bu)(bu)等(deng)邊(bian)六角(jiao)(jiao)(jiao)(jiao)形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、五(wu)瓣梅(mei)花形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、雙凸形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、雙凹形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、瓜(gua)子形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、圓錐形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、波(bo)紋形(xing)(xing)(xing)(xing)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)。不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是除了(le)圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)以外的(de)(de)(de)(de)其他截(jie)面(mian)(mian)形(xing)(xing)(xing)(xing)狀的(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)總稱， 有(you)焊接異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和無(wu)縫異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。 因為材質的(de)(de)(de)(de)關(guan)系，冷拔六角(jiao)(jiao)(jiao)(jiao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)一般為304以上(shang)材質為多(duo)，200、201材質硬度強風，成(cheng)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)難度加(jia)(jia)大。不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)無(wu)縫異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)由不(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)異(yi)(yi)(yi)(yi)(yi)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)加(jia)(jia)工而成(cheng)。