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優選：攀枝花 Q420高強度鋼管工廠 <攀枝花>萬方金屬材料有限公司

gb5310高(gao)(gao)(gao)壓(ya)(ya)(ya)鍋(guo)(guo)爐(lu)管(guan)(guan)標準攀枝花無(wu)縫(feng)鋼(gang)(gang)(gang)管(guan)(guan)主要用(yong)來制造高(gao)(gao)(gao)壓(ya)(ya)(ya)及(ji)其以(yi)上(shang)壓(ya)(ya)(ya)力的(de)蒸汽鍋(guo)(guo)爐(lu)管(guan)(guan)道(dao)等用(yong)的(de)優(you)質(zhi)碳素結構(gou)(gou)鋼(gang)(gang)(gang)、合金結構(gou)(gou)鋼(gang)(gang)(gang)和(he)不銹耐熱鋼(gang)(gang)(gang)高(gao)(gao)(gao)壓(ya)(ya)(ya)無(wu)縫(feng)剛管(guan)(guan)、這些鍋(guo)(guo)爐(lu)管(guan)(guan)經高(gao)(gao)(gao)溫和(he)高(gao)(gao)(gao)壓(ya)(ya)(ya)下(xia)工作、管(guan)(guan)子(zi)在高(gao)(gao)(gao)溫煙氣和(he)水蒸汽的(de)作用(yong)下(xia)還會發生氧(yang)化(hua)(hua)和(he)腐(fu)蝕，因此要求鋼(gang)(gang)(gang)管(guan)(guan)有(you)(you)(you)高(gao)(gao)(gao)的(de)持久強度、高(gao)(gao)(gao)的(de)抗氧(yang)化(hua)(hua)性能(neng)，并具有(you)(you)(you)良(liang)好的(de)組織(zhi)穩定性，采用(yong)鋼(gang)(gang)(gang)號(hao)有(you)(you)(you)：優(you)質(zhi)碳素結構(gou)(gou)鋼(gang)(gang)(gang)鋼(gang)(gang)(gang)號(hao)有(you)(you)(you)20G、20MnG、25MnG；合金結構(gou)(gou)鋼(gang)(gang)(gang)鋼(gang)(gang)(gang)號(hao)15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等；有(you)(you)(you)銹耐熱鋼(gang)(gang)(gang)常用(yong)1Cr18Ni9、1Cr18Ni11Nb高(gao)(gao)(gao)壓(ya)(ya)(ya)鍋(guo)(guo)爐(lu)管(guan)(guan)除保證化(hua)(hua)學成分和(he)機(ji)械性能(neng)外(wai)，要逐(zhu)根做水壓(ya)(ya)(ya)試驗(yan)，要作擴口、壓(ya)(ya)(ya)扁試驗(yan)，高(gao)(gao)(gao)壓(ya)(ya)(ya)無(wu)縫(feng)管(guan)(guan)以(yi)熱處理(li)狀態交貨。

此(ci)外(wai)，對(dui)成品鋼(gang)(gang)管(guan)(guan)顯(xian)微(wei)組織、晶粒度(du)(du)、脫碳(tan)層(ceng)也(ye)有一定要求。 地(di)質(zhi)鉆(zhan)探及石(shi)油(you)鉆(zhan)控用(yong)(yong)(yong)攀枝(zhi)花無(wu)縫鋼(gang)(gang)管(guan)(guan)；為探明地(di)下巖(yan)層(ceng)結(jie)構、地(di)下水、石(shi)油(you)、天然(ran)氣及礦產資(zi)源情況，利用(yong)(yong)(yong)鉆(zhan)機打(da)井。石(shi)油(you)、天然(ran)氣開(kai)采更離(li)不(bu)開(kai)打(da)井，地(di)質(zhi)鉆(zhan)控用(yong)(yong)(yong)石(shi)油(you)鉆(zhan)探用(yong)(yong)(yong)攀枝(zhi)花無(wu)縫鋼(gang)(gang)管(guan)(guan)是鉆(zhan)井的(de)(de)主要器材，主要包括巖(yan)芯外(wai)管(guan)(guan)、巖(yan)芯內管(guan)(guan)、套管(guan)(guan)、鉆(zhan)桿等。由(you)于(yu)鉆(zhan)探用(yong)(yong)(yong)管(guan)(guan)要深入到(dao)幾千米地(di)層(ceng)深度(du)(du)工(gong)作，工(gong)作條件(jian)極(ji)為復雜，鉆(zhan)桿承受(shou)拉(la)、壓、彎(wan)曲、扭(niu)轉和(he)不(bu)均(jun)衡沖擊載荷(he)等應力作用(yong)(yong)(yong)，還要受(shou)到(dao)泥漿、巖(yan)石(shi)磨損(sun)，因此(ci)，要求管(guan)(guan)材必須具有足夠的(de)(de)強度(du)(du)、硬度(du)(du)、耐磨性和(he)沖擊韌(ren)性，鋼(gang)(gang)管(guan)(guan)用(yong)(yong)(yong)鋼(gang)(gang)用(yong)(yong)(yong)“dz”（地(di)質(zhi)的(de)(de)漢語拼音(yin)字頭）加數字一代表鋼(gang)(gang)屈服點表示，常用(yong)(yong)(yong)的(de)(de)鋼(gang)(gang)號有dz45的(de)(de)45mnb、50mn；dz50的(de)(de)40mn2、40mn2si；dz55的(de)(de)40mn2mo、40mnvb；dz60的(de)(de)40mnmob、dz65的(de)(de)27mnmovb。鋼(gang)(gang)管(guan)(guan)都(dou)以熱處理狀(zhuang)態交貨。

無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)生(sheng)產制(zhi)(zhi)造過程：一般(ban)攀枝花(hua)無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)使用(yong)(yong)溫度(du)在450℃以下，國產管(guan)(guan)(guan)(guan)主要(yao)用(yong)(yong)10號(hao)、20號(hao)碳結鋼(gang)(gang)熱(re)(re)軋管(guan)(guan)(guan)(guan)或冷拔管(guan)(guan)(guan)(guan)制(zhi)(zhi)造。GB9948標準無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)使用(yong)(yong)時經(jing)常(chang)處于(yu)高(gao)(gao)溫和高(gao)(gao)壓(ya)條件(jian)，管(guan)(guan)(guan)(guan)子在高(gao)(gao)溫煙(yan)(yan)氣(qi)(qi)和水蒸(zheng)氣(qi)(qi)的作用(yong)(yong)下，會發生(sheng)氧(yang)化(hua)和腐(fu)蝕(shi)。要(yao)求鋼(gang)(gang)管(guan)(guan)(guan)(guan)具(ju)有高(gao)(gao)的持久強度(du)，高(gao)(gao)的抗氧(yang)化(hua)腐(fu)蝕(shi)性能(neng)，并有良好的組(zu)織穩定性。用(yong)(yong)途(tu)：一般(ban)攀枝花(hua)無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)主要(yao)用(yong)(yong)來制(zhi)(zhi)造水冷壁管(guan)(guan)(guan)(guan)、沸水管(guan)(guan)(guan)(guan)、過熱(re)(re)蒸(zheng)汽(qi)管(guan)(guan)(guan)(guan)、機車鍋(guo)(guo)(guo)(guo)爐用(yong)(yong)的過熱(re)(re)蒸(zheng)汽(qi)管(guan)(guan)(guan)(guan)，大、小煙(yan)(yan)管(guan)(guan)(guan)(guan)及拱磚管(guan)(guan)(guan)(guan)等。GB9948無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)主要(yao)用(yong)(yong)來制(zhi)(zhi)造高(gao)(gao)壓(ya)和超高(gao)(gao)壓(ya)鍋(guo)(guo)(guo)(guo)爐的過熱(re)(re)器(qi)管(guan)(guan)(guan)(guan)、再熱(re)(re)器(qi)管(guan)(guan)(guan)(guan)、導氣(qi)(qi)管(guan)(guan)(guan)(guan)、主蒸(zheng)汽(qi)管(guan)(guan)(guan)(guan)等 GB9948標準無(wu)(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)按(an)所承受的高(gao)(gao)溫性能(neng)分為(wei)一般(ban)鍋(guo)(guo)(guo)(guo)爐管(guan)(guan)(guan)(guan)和高(gao)(gao)壓(ya)鍋(guo)(guo)(guo)(guo)爐管(guan)(guan)(guan)(guan)。無(wu)(wu)論一般(ban)鍋(guo)(guo)(guo)(guo)爐管(guan)(guan)(guan)(guan)或高(gao)(gao)壓(ya)鍋(guo)(guo)(guo)(guo)爐管(guan)(guan)(guan)(guan)按(an)其用(yong)(yong)途(tu)要(yao)求不同又可分為(wei)各種(zhong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。