茄子視頻黃色:20#精密無縫鋼管基地直銷

　　精密無縫鋼管的分類：精密無縫鋼管分精密無縫鋼管和焊接(jie)精(jing)密(mi)無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(有(you)縫(feng)(feng)管(guan)(guan))兩大類。按斷面形(xing)狀又可分為圓(yuan)管(guan)(guan)和異(yi)形(xing)管(guan)(guan)，廣泛應用的(de)是(shi)圓(yuan)形(xing)精(jing)密(mi)無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)，但也有(you)一些(xie)方(fang)(fang)形(xing)、矩形(xing)、半(ban)圓(yuan)形(xing)、六角(jiao)形(xing)、等(deng)邊三角(jiao)形(xing)、八(ba)角(jiao)形(xing)等(deng)異(yi)形(xing)精(jing)密(mi)無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)。對(dui)于承受流(liu)體壓(ya)力(li)的(de)精(jing)密(mi)無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)都要(yao)進行液壓(ya)試(shi)驗來檢驗其耐(nai)壓(ya)能力(li)和質量，在規定的(de)壓(ya)力(li)下(xia)不發生泄漏、浸濕或膨脹(zhang)為合(he)格，有(you)些(xie)精(jing)密(mi)無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)還要(yao)根據(ju)標準或需(xu)方(fang)(fang)要(yao)求進行卷邊試(shi)驗、擴口試(shi)驗、壓(ya)扁試(shi)驗等(deng)。

　　第二，精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)是用(yong)鋼(gang)(gang)(gang)錠或實心(xin)管(guan)(guan)(guan)(guan)(guan)坯經(jing)穿孔制成(cheng)毛管(guan)(guan)(guan)(guan)(guan)，然后(hou)經(jing)熱軋(ya)、冷軋(ya)或冷撥(bo)制成(cheng)。精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的規格用(yong)外(wai)徑*壁厚毫米數表示。精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)分熱軋(ya)和冷軋(ya)(撥(bo))精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)兩類(lei)。熱軋(ya)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)分一(yi)般(ban)(ban)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，低(di)、中壓鍋(guo)爐(lu)(lu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，高(gao)壓鍋(guo)爐(lu)(lu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、合金精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)(xiu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、石油裂化(hua)(hua)管(guan)(guan)(guan)(guan)(guan)、地(di)質精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)和其它精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)等。冷軋(ya)(撥(bo))精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)除分一(yi)般(ban)(ban)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、低(di)中壓鍋(guo)爐(lu)(lu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、高(gao)壓鍋(guo)爐(lu)(lu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、合金精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)(xiu)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、石油裂化(hua)(hua)管(guan)(guan)(guan)(guan)(guan)、其它精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)外(wai)，還包(bao)括碳素(su)薄(bo)壁精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、合金薄(bo)壁精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)(xiu)薄(bo)壁精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、異型精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。熱軋(ya)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)外(wai)徑一(yi)般(ban)(ban)大(da)于32mm，壁厚2.5-75mm，冷軋(ya)精(jing)(jing)(jing)(jing)密(mi)(mi)(mi)無(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)處徑可以到6mm，壁厚可到0.25mm，薄(bo)壁管(guan)(guan)(guan)(guan)(guan)外(wai)徑可到5mm壁厚小于0.25mm，冷軋(ya)比熱軋(ya)尺寸(cun)精(jing)(jing)(jing)(jing)度高(gao)。

　　第三，一般用精密無縫鋼管是用10、20、30、35、45等(deng)優質(zhi)碳結(jie)鋼(gang)(gang)(gang)16Mn、5MnV等(deng)低合(he)金(jin)結(jie)構鋼(gang)(gang)(gang)或(huo)40Cr、30CrMnSi、45Mn2、40MnB等(deng)合(he)結(jie)鋼(gang)(gang)(gang)熱(re)(re)(re)軋(ya)(ya)或(huo)冷軋(ya)(ya)制(zhi)成(cheng)的。10、20等(deng)低碳鋼(gang)(gang)(gang)制(zhi)造的無(wu)(wu)(wu)縫(feng)管主要用于流體輸送管道(dao)。45、40Cr等(deng)中碳鋼(gang)(gang)(gang)制(zhi)成(cheng)的無(wu)(wu)(wu)縫(feng)管用來制(zhi)造機械(xie)零(ling)件(jian)(jian)，如汽車(che)、拖拉(la)機的受力零(ling)件(jian)(jian)。一般用精密無(wu)(wu)(wu)縫(feng)鋼(gang)(gang)(gang)管要保證強度(du)和壓扁試(shi)驗。熱(re)(re)(re)軋(ya)(ya)精密無(wu)(wu)(wu)縫(feng)鋼(gang)(gang)(gang)管以熱(re)(re)(re)軋(ya)(ya)狀態或(huo)熱(re)(re)(re)處理狀態交貨;冷軋(ya)(ya)以熱(re)(re)(re)以熱(re)(re)(re)處理狀態交貨。