3087鋼管現貨零售 直銷

　　3087鋼管是用鋼錠或實心(xin)管(guan)坯經(jing)穿孔制成毛管(guan)，然(ran)后經(jing)熱軋、冷(leng)(leng)軋或冷(leng)(leng)撥制成。

　　3087鋼管的分類：無縫鋼管分熱(re)軋和冷軋(撥)無縫鋼管兩類。

　　熱(re)軋無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)分一般鋼(gang)(gang)管(guan)(guan)(guan)(guan)，低(di)、中(zhong)壓鍋爐(lu)(lu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)，高壓鍋爐(lu)(lu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、合金(jin)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、不銹鋼(gang)(gang)管(guan)(guan)(guan)(guan)、石油裂化(hua)管(guan)(guan)(guan)(guan)、地(di)質鋼(gang)(gang)管(guan)(guan)(guan)(guan)和其它(ta)鋼(gang)(gang)管(guan)(guan)(guan)(guan)等。

　　冷軋(ya)(撥)無縫鋼管(guan)(guan)(guan)(guan)(guan)除分一(yi)般鋼管(guan)(guan)(guan)(guan)(guan)、低(di)中壓鍋爐(lu)鋼管(guan)(guan)(guan)(guan)(guan)、高壓鍋爐(lu)鋼管(guan)(guan)(guan)(guan)(guan)、合(he)金(jin)鋼管(guan)(guan)(guan)(guan)(guan)、不銹鋼管(guan)(guan)(guan)(guan)(guan)、石油裂化管(guan)(guan)(guan)(guan)(guan)、其它鋼管(guan)(guan)(guan)(guan)(guan)外(wai)(wai)，還包括(kuo)碳素(su)薄壁(bi)(bi)鋼管(guan)(guan)(guan)(guan)(guan)、合(he)金(jin)薄壁(bi)(bi)鋼管(guan)(guan)(guan)(guan)(guan)、不銹薄壁(bi)(bi)鋼管(guan)(guan)(guan)(guan)(guan)、異(yi)型鋼管(guan)(guan)(guan)(guan)(guan)。熱(re)軋(ya)無縫管(guan)(guan)(guan)(guan)(guan)外(wai)(wai)徑一(yi)般大于(yu) 32mm，壁(bi)(bi)厚2.5-75mm，冷軋(ya)無縫鋼管(guan)(guan)(guan)(guan)(guan)處徑可以(yi)到6mm，壁(bi)(bi)厚可到0.25mm，薄壁(bi)(bi)管(guan)(guan)(guan)(guan)(guan)外(wai)(wai)徑可到5mm，壁(bi)(bi)厚小(xiao)于(yu)0.25mm，冷軋(ya)比熱(re)軋(ya)尺寸精度高。

　　一(yi)般用(yong)(yong)無縫(feng)鋼(gang)管(guan)(guan)：是用(yong)(yong)10#、20#、30#、35#、45#等(deng)(deng)優質(zhi)碳(tan)(tan)結鋼(gang)16Mn、5MnV等(deng)(deng)低合(he)金(jin)(jin)結構(gou)鋼(gang)或(huo)(huo)40Cr、30CrMnSi、45Mn2、40MnB等(deng)(deng)合(he)金(jin)(jin)鋼(gang)熱軋或(huo)(huo)冷軋制(zhi)成(cheng)的。10、20等(deng)(deng)低碳(tan)(tan)鋼(gang)制(zhi)造的無縫(feng)管(guan)(guan)主要用(yong)(yong)于流體輸送管(guan)(guan)道(dao)。45#、40Cr等(deng)(deng)中碳(tan)(tan)鋼(gang)制(zhi)成(cheng)的無縫(feng)管(guan)(guan)用(yong)(yong)來制(zhi)造機械零(ling)件(jian)，如汽車(che)、拖拉機的受力零(ling)件(jian)。一(yi)般用(yong)(yong)鋼(gang)管(guan)(guan)要保(bao)證強度和壓扁(bian)試驗。熱軋鋼(gang)管(guan)(guan)以熱軋狀態或(huo)(huo)熱處理狀態交貨;冷軋以熱處理狀態交貨。

　　低(di)中壓鍋爐用(yong)無縫鋼(gang)(gang)管(guan)(guan)(GB3087-2008)：用(yong)于(yu)制(zhi)造各種(zhong)低(di)中壓鍋爐、過熱(re)(re)蒸汽(qi)(qi)管(guan)(guan)、沸水(shui)(shui)管(guan)(guan)、水(shui)(shui)冷壁管(guan)(guan)及(ji)機(ji)車鍋爐用(yong)過熱(re)(re)蒸汽(qi)(qi)管(guan)(guan)、大(da)煙管(guan)(guan)、小煙管(guan)(guan)和拱磚管(guan)(guan)等。用(yong)優質碳素結構鋼(gang)(gang)熱(re)(re)軋(ya)或冷軋(ya)(撥)無縫鋼(gang)(gang)管(guan)(guan)。主要用(yong)10#、20號鋼(gang)(gang)制(zhi)造，除保證化學(xue)成(cheng)分和機(ji)械性能外要做水(shui)(shui)壓試驗，卷邊(bian)、擴口、壓扁(bian)等試驗。熱(re)(re)軋(ya)以(yi)熱(re)(re)軋(ya)狀態交(jiao)貨(huo)、冷軋(ya)(撥)以(yi)熱(re)(re)處理狀態交(jiao)貨(huo)。

　　高壓(ya)鍋(guo)爐(lu)鋼(gang)管(guan)(guan)(guan)(guan)(GB5310-2008)：主要(yao)(yao)(yao)用(yong)(yong)來制造高壓(ya)及其以(yi)上壓(ya)力的(de)蒸汽鍋(guo)爐(lu)管(guan)(guan)(guan)(guan)道等(deng)用(yong)(yong)的(de)優質碳素結(jie)構(gou)鋼(gang)、合金(jin)結(jie)構(gou)鋼(gang)和不銹(xiu)耐熱鋼(gang)無縫鋼(gang)管(guan)(guan)(guan)(guan)、這些鍋(guo)爐(lu)管(guan)(guan)(guan)(guan)經常處于(yu)高溫和高壓(ya)下(xia)工作(zuo)、管(guan)(guan)(guan)(guan)子在高溫煙氣和水蒸汽的(de)作(zuo)用(yong)(yong)下(xia)還會發生氧化和腐蝕，因此(ci)要(yao)(yao)(yao)求鋼(gang)管(guan)(guan)(guan)(guan)有(you)高的(de)持久強(qiang)度(du)、高的(de)抗氧化性能(neng)，并具有(you)良好的(de)組織穩定性，采用(yong)(yong)鋼(gang)號(hao)有(you)：優質碳素結(jie)構(gou)鋼(gang)鋼(gang)號(hao)有(you)20G、20MnG、25MnG;合金(jin)結(jie)構(gou)鋼(gang)鋼(gang)號(hao)15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等(deng);有(you)銹(xiu)耐熱鋼(gang)常用(yong)(yong)1Cr18Ni9、1Cr18Ni11Nb高壓(ya)鍋(guo)爐(lu)管(guan)(guan)(guan)(guan)除(chu)保證化學成(cheng)分和機械性能(neng)外(wai)，要(yao)(yao)(yao)逐根做水壓(ya)試驗，要(yao)(yao)(yao)作(zuo)擴口、壓(ya)扁(bian)試驗。鋼(gang)管(guan)(guan)(guan)(guan)以(yi)熱處理狀態交貨。此(ci)外(wai)，對(dui)成(cheng)品(pin)鋼(gang)管(guan)(guan)(guan)(guan)顯微組織、晶(jing)粒度(du)、脫碳層也有(you)一定要(yao)(yao)(yao)求。

　　地(di)(di)(di)質(zhi)(zhi)鉆(zhan)探及石油(you)鉆(zhan)探用(yong)(yong)(yong)無縫鋼(gang)(gang)管(guan)：為探明地(di)(di)(di)下巖(yan)(yan)(yan)層(ceng)結構、地(di)(di)(di)下水、石油(you)、天(tian)然氣及礦產資源情(qing)況，利用(yong)(yong)(yong)鉆(zhan)機(ji)打井(jing)。石油(you)、天(tian)然氣開采更離不(bu)開打井(jing)，地(di)(di)(di)質(zhi)(zhi)鉆(zhan)探用(yong)(yong)(yong)石油(you)鉆(zhan)探用(yong)(yong)(yong)無縫鋼(gang)(gang)管(guan)是(shi)鉆(zhan)井(jing)的主要(yao)器材(cai)，主要(yao)包括巖(yan)(yan)(yan)芯(xin)外管(guan)、巖(yan)(yan)(yan)芯(xin)內管(guan)、套管(guan)、鉆(zhan)桿等。由于鉆(zhan)探用(yong)(yong)(yong)管(guan)要(yao)深入(ru)到幾千米地(di)(di)(di)層(ceng)深度工(gong)作(zuo)(zuo)，工(gong)作(zuo)(zuo)條(tiao)件(jian)極為復雜，鉆(zhan)桿承受拉、壓、彎曲、扭(niu)轉和不(bu)均衡沖(chong)擊載荷等應(ying)力作(zuo)(zuo)用(yong)(yong)(yong)，還要(yao)受到泥(ni)漿(jiang)、巖(yan)(yan)(yan)石磨損，因此，要(yao)求(qiu)管(guan)材(cai)必須具有足夠的強度、硬(ying)度、耐(nai)磨性(xing)(xing)和沖(chong)擊韌性(xing)(xing)，鋼(gang)(gang)管(guan)用(yong)(yong)(yong)鋼(gang)(gang)用(yong)(yong)(yong)“DZ”(地(di)(di)(di)質(zhi)(zhi)的漢(han)語(yu)拼音字頭)加數(shu)字一(yi)代表鋼(gang)(gang)屈服點(dian)表示(shi)，常用(yong)(yong)(yong)的鋼(gang)(gang)號有DZ45的45MnB、50Mn;DZ50的40Mn2、40Mn2Si;DZ55的40Mn2Mo、40MnVB;DZ60的40MnMoB、DZ65的27MnMoVB。鋼(gang)(gang)管(guan)都以(yi)熱處理狀態交貨。

　　石油(you)裂化管(guan)(guan)：用(yong)于(yu)石油(you)煉廠的爐管(guan)(guan)、熱交換器管(guan)(guan)和管(guan)(guan)道(dao)用(yong)無縫管(guan)(guan)。常用(yong)優(you)質碳素鋼(gang)(gang)(gang)(10、20)、合(he)金鋼(gang)(gang)(gang)(12CrMo、15CrMo)、耐熱鋼(gang)(gang)(gang)(12Cr2Mo、15Cr5Mo)、不銹(xiu)(xiu)鋼(gang)(gang)(gang)(1Cr18Ni9、1Cr18Ni9Ti)制造(zao)。鋼(gang)(gang)(gang)管(guan)(guan)除(chu)得證(zheng)化學成分(fen)和各種(zhong)機(ji)械(xie)性能外，還要保(bao)證(zheng)水壓、壓扁、擴口等試(shi)驗，及(ji)表面質量(liang)和無損檢驗。鋼(gang)(gang)(gang)管(guan)(guan)在(zai)熱處理狀(zhuang)態下交貨。不銹(xiu)(xiu)鋼(gang)(gang)(gang)管(guan)(guan)：用(yong)各種(zhong)不銹(xiu)(xiu)鋼(gang)(gang)(gang)熱軋(ya)，冷(leng)軋(ya)的不銹(xiu)(xiu)鋼(gang)(gang)(gang)管(guan)(guan)，廣泛應(ying)用(yong)于(yu)石油(you)、化工(gong)設備(bei)管(guan)(guan)道(dao)和各種(zhong)用(yong)途的不銹(xiu)(xiu)鋼(gang)(gang)(gang)結構(gou)零件，除(chu)應(ying)保(bao)證(zheng)化學成分(fen)和機(ji)械(xie)性能，凡用(yong)作承受流體壓力的鋼(gang)(gang)(gang)管(guan)(guan)要保(bao)證(zheng)水壓試(shi)驗合(he)格。各種(zhong)專用(yong)鋼(gang)(gang)(gang)管(guan)(guan)要按規定保(bao)證(zheng)條(tiao)件。

　　3087鋼管尺寸及允許偏差

　　偏差等級

　　標準化外徑允(yun)許偏差

　　D1

　　±1.5%，最(zui)小±0.75 mm

　　D2

　　±1.0%。最(zui)小±0.50 mm

　　D3

　　±0.75%.最小±0.30 mm

　　D4

　　±0.50%。最(zui)小±0.10 mm