草草視頻: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(he)(he)焊接(jie)精密(mi)無縫(feng)(feng)鋼管(guan)(有縫(feng)(feng)管(guan))兩大類。按斷面形(xing)狀又可分為(wei)圓管(guan)和(he)(he)異形(xing)管(guan)，廣(guang)泛(fan)應用的是圓形(xing)精密(mi)無縫(feng)(feng)鋼管(guan)，但也有一些(xie)方(fang)形(xing)、矩形(xing)、半圓形(xing)、六(liu)角形(xing)、等邊(bian)三角形(xing)、八角形(xing)等異形(xing)精密(mi)無縫(feng)(feng)鋼管(guan)。對于(yu)承受(shou)流體壓(ya)力的精密(mi)無縫(feng)(feng)鋼管(guan)都要進行液壓(ya)試(shi)驗(yan)來檢驗(yan)其耐壓(ya)能力和(he)(he)質量，在(zai)規(gui)定(ding)的壓(ya)力下不發生泄(xie)漏、浸濕或膨脹為(wei)合(he)格，有些(xie)精密(mi)無縫(feng)(feng)鋼管(guan)還要根據標(biao)準(zhun)或需方(fang)要求進行卷邊(bian)試(shi)驗(yan)、擴口(kou)試(shi)驗(yan)、壓(ya)扁試(shi)驗(yan)等。

　　第二，精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)是(shi)用(yong)鋼(gang)(gang)(gang)(gang)(gang)(gang)錠或實(shi)心(xin)管(guan)(guan)(guan)(guan)坯(pi)經(jing)穿(chuan)孔制成毛管(guan)(guan)(guan)(guan)，然后經(jing)熱(re)軋(ya)、冷(leng)(leng)軋(ya)或冷(leng)(leng)撥制成。精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的規(gui)格用(yong)外(wai)徑*壁(bi)(bi)厚(hou)毫米數(shu)表示。精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)分熱(re)軋(ya)和冷(leng)(leng)軋(ya)(撥)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)兩(liang)類。熱(re)軋(ya)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)分一(yi)般(ban)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)，低、中(zhong)壓(ya)鍋(guo)爐(lu)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)，高壓(ya)鍋(guo)爐(lu)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、合(he)(he)金(jin)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、不(bu)銹精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、石油裂(lie)(lie)化管(guan)(guan)(guan)(guan)、地質(zhi)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)和其它(ta)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)等(deng)。冷(leng)(leng)軋(ya)(撥)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)除(chu)分一(yi)般(ban)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、低中(zhong)壓(ya)鍋(guo)爐(lu)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、高壓(ya)鍋(guo)爐(lu)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、合(he)(he)金(jin)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、不(bu)銹精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、石油裂(lie)(lie)化管(guan)(guan)(guan)(guan)、其它(ta)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)外(wai)，還包括碳素(su)薄壁(bi)(bi)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、合(he)(he)金(jin)薄壁(bi)(bi)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、不(bu)銹薄壁(bi)(bi)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、異型精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。熱(re)軋(ya)無(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)外(wai)徑一(yi)般(ban)大于32mm，壁(bi)(bi)厚(hou)2.5-75mm，冷(leng)(leng)軋(ya)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)(mi)無(wu)(wu)(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)處徑可以到6mm，壁(bi)(bi)厚(hou)可到0.25mm，薄壁(bi)(bi)管(guan)(guan)(guan)(guan)外(wai)徑可到5mm壁(bi)(bi)厚(hou)小于0.25mm，冷(leng)(leng)軋(ya)比熱(re)軋(ya)尺寸精(jing)(jing)(jing)度高。

　　第三，一般用精密無縫鋼管是用10、20、30、35、45等(deng)優(you)質碳(tan)(tan)結鋼(gang)16Mn、5MnV等(deng)低(di)合金結構鋼(gang)或(huo)40Cr、30CrMnSi、45Mn2、40MnB等(deng)合結鋼(gang)熱軋或(huo)冷(leng)(leng)軋制(zhi)成的(de)。10、20等(deng)低(di)碳(tan)(tan)鋼(gang)制(zhi)造的(de)無(wu)縫(feng)(feng)管(guan)(guan)主要用于流體輸(shu)送管(guan)(guan)道(dao)。45、40Cr等(deng)中碳(tan)(tan)鋼(gang)制(zhi)成的(de)無(wu)縫(feng)(feng)管(guan)(guan)用來制(zhi)造機(ji)械零件(jian)，如汽(qi)車、拖拉機(ji)的(de)受力零件(jian)。一般(ban)用精(jing)密無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)要保證強度(du)和壓(ya)扁試(shi)驗。熱軋精(jing)密無(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)以熱軋狀(zhuang)(zhuang)態(tai)或(huo)熱處理(li)狀(zhuang)(zhuang)態(tai)交(jiao)貨;冷(leng)(leng)軋以熱以熱處理(li)狀(zhuang)(zhuang)態(tai)交(jiao)貨。