無(wu)(wu)縫(feng)化鋼管(guan)(guan)(guan)的(de)(de)(de)生(sheng)產工(gong)(gong)藝(yi)：精(jing)密(mi)鋼管(guan)(guan)(guan)的(de)(de)(de)無(wu)(wu)縫(feng)化主(zhu)要(yao)是通(tong)過張力減徑(jing)(jing)來完(wan)(wan)成(cheng)(cheng)的(de)(de)(de)，張力減徑(jing)(jing)過程是空(kong)心(xin)母材不帶(dai)芯棒的(de)(de)(de)連續軋(ya)制過程。在保證母管(guan)(guan)(guan)焊(han)接質量的(de)(de)(de)前提下，焊(han)管(guan)(guan)(guan)張力減徑(jing)(jing)工(gong)(gong)藝(yi)是將焊(han)管(guan)(guan)(guan)整體(ti)加熱(re)到950攝氏度(du)(du)以上，再經(jing)張力減徑(jing)(jing)機(ji)(ji)(張力減徑(jing)(jing)機(ji)(ji)共有24道(dao)次(ci))軋(ya)制成(cheng)(cheng)各種外(wai)徑(jing)(jing)與壁厚的(de)(de)(de)成(cheng)(cheng)品(pin)管(guan)(guan)(guan)，采用(yong)此工(gong)(gong)藝(yi)所生(sheng)產的(de)(de)(de)熱(re)軋(ya)鋼管(guan)(guan)(guan)與普通(tong)的(de)(de)(de)高(gao)(gao)頻焊(han)管(guan)(guan)(guan)有本質的(de)(de)(de)區別,通(tong)過加熱(re)爐加熱(re)后其(qi)焊(han)縫(feng)與母體(ti)的(de)(de)(de)金相組(zu)織(zhi)和機(ji)(ji)械(xie)性能(neng)可以達到完(wan)(wan)全一(yi)致此外(wai) ，通(tong)過多道(dao)次(ci)的(de)(de)(de)張力減徑(jing)(jing)機(ji)(ji)軋(ya)制和自動(dong)控(kong)制使得鋼管(guan)(guan)(guan)的(de)(de)(de)尺寸精(jing)度(du)(du)(尤(you)其(qi)是管(guan)(guan)(guan)體(ti)圓(yuan)度(du)(du)和壁厚精(jing)度(du)(du))優于同類無(wu)(wu)縫(feng)管(guan)(guan)(guan)。1)精(jing)密(mi)無(wu)(wu)縫(feng)管(guan)(guan)(guan)主(zhu)要(yao)品(pin)種：DIN系列高(gao)(gao)精(jing)度(du)(du)精(jing)密(mi)光亮精(jing)密(mi)無(wu)(wu)縫(feng)管(guan)(guan)(guan)、液壓(ya)系統專用(yong)精(jing)密(mi)無(wu)(wu)縫(feng)管(guan)(guan)(guan)、汽車(che)制造(zao)專用(yong)精(jing)密(mi)無(wu)(wu)縫(feng)管(guan)(guan)(guan)

精密無縫管

2)主要標準：DIN2391， DIN2445， EN10305， DIN1629， DIN1630， ASTM A179

3)精(jing)密無縫管主要材質：ST35(E235) ST37.4 ST45(E255) ST52(E355)

4)主(zhu)要交(jiao)貨狀態：NBK(+N) GBK(+A) BK(+C) BKW(+LC) BKS(+SR)

5)主(zhu)要特(te)點(dian)：精(jing)密無縫(feng)管內外(wai)壁無氧化層，承受高(gao)壓無泄漏，高(gao)精(jing)度(du)，高(gao)光潔度(du)，冷彎不(bu)變形，擴口、壓扁(bian)無裂縫(feng)

6)精密無縫管主要用途：應用于液壓系統配管、汽車制造配管、軍工、工程機械、鐵路機車、航空航天、船舶、注塑機、壓鑄機、機床、柴油機、石油化工、電站、鍋爐設備等各行各業。
 精密無縫鋼管特性(xing)(xing)及(ji)適(shi)用(yong)范圍：是屈服(fu)強(qiang)度為(wei)686MPa 級的(de)可焊接低合(he)金高強(qiang)度鋼，具有良好的(de)綜(zong)合(he)力(li)學性(xing)(xing)能(neng)。經不(bu)(bu)同(tong)的(de)熱處理后，可獲得不(bu)(bu)同(tong)的(de)綜(zong)合(he)力(li)學性(xing)(xing)能(neng)，以(yi)適(shi)用(yong)于不(bu)(bu)同(tong)的(de)工作條件(jian)。其(qi)耐(nai)腐蝕性(xing)(xing)高于低碳鋼(約為(wei)三倍)。適(shi)用(yong)于制造各類壓力(li)容器和工程礦(kuang)山機械(xie)及(ji)載重車等(deng)零部(bu)件(jian)。