銷售熱線：
無錫厚壁鋼管無錫大口徑厚壁管市場行情-創聯金屬
大口徑厚(hou)壁管
大口徑厚壁管
大口徑(jing)厚壁管(guan)(guan)(guan)(guan)的(de)原(yuan)料(liao)(liao)是圓(yuan)管(guan)(guan)(guan)(guan)坯，圓(yuan)管(guan)(guan)(guan)(guan)胚(pei)要經(jing)過(guo)(guo)(guo)切割機(ji)(ji)的(de)切割加工成長度約(yue)為(wei)1米的(de)坯料(liao)(liao)，并(bing)經(jing)傳(chuan)送(song)帶送(song)到(dao)熔(rong)(rong)爐內加熱。鋼(gang)(gang)坯被(bei)送(song)入(ru)熔(rong)(rong)爐內加熱，溫度大約(yue)為(wei)1200攝氏(shi)度。燃料(liao)(liao)為(wei)氫氣或(huo)乙炔。爐內溫度控制是關鍵性的(de)問(wen)題.圓(yuan)管(guan)(guan)(guan)(guan)坯出(chu)爐后(hou)(hou)要經(jing)過(guo)(guo)(guo)壓(ya)力穿孔(kong)機(ji)(ji)進行穿空。一般較(jiao)常見的(de)穿孔(kong)機(ji)(ji)是錐形(xing)輥(gun)穿孔(kong)機(ji)(ji)，這種(zhong)(zhong)穿孔(kong)機(ji)(ji)生產(chan)效率高，產(chan)品質(zhi)量好，穿孔(kong)擴徑(jing)量大，可(ke)穿多種(zhong)(zhong)鋼(gang)(gang)種(zhong)(zhong)。穿孔(kong)后(hou)(hou)，圓(yuan)管(guan)(guan)(guan)(guan)坯就先后(hou)(hou)被(bei)三輥(gun)斜(xie)軋、連軋或(huo)擠壓(ya)。擠壓(ya)后(hou)(hou)要脫管(guan)(guan)(guan)(guan)定徑(jing)。定徑(jing)機(ji)(ji)通過(guo)(guo)(guo)錐形(xing)鉆頭(tou)高速旋轉入(ru)鋼(gang)(gang)胚(pei)打孔(kong)，形(xing)成鋼(gang)(gang)管(guan)(guan)(guan)(guan)。鋼(gang)(gang)管(guan)(guan)(guan)(guan)內徑(jing)由定徑(jing)機(ji)(ji)鉆頭(tou)的(de)外徑(jing)長度來確(que)定。鋼(gang)(gang)管(guan)(guan)(guan)(guan)經(jing)定徑(jing)后(hou)(hou)，進入(ru)冷卻塔中，通過(guo)(guo)(guo)噴水冷卻，鋼(gang)(gang)管(guan)(guan)(guan)(guan)經(jing)冷卻后(hou)(hou)，就要被(bei)矯(jiao)直(zhi)。鋼(gang)(gang)管(guan)(guan)(guan)(guan)經(jing)矯(jiao)直(zhi)后(hou)(hou)由傳(chuan)送(song)帶送(song)至金屬探(tan)(tan)傷機(ji)(ji)（或(huo)水壓(ya)實驗）進行內部探(tan)(tan)傷。若鋼(gang)(gang)管(guan)(guan)(guan)(guan)內部有裂紋，氣泡等問(wen)題，將被(bei)探(tan)(tan)測出(chu)。鋼(gang)(gang)管(guan)(guan)(guan)(guan)質(zhi)檢后(hou)(hou)還要通過(guo)(guo)(guo)嚴格(ge)的(de)手工挑選。鋼(gang)(gang)管(guan)(guan)(guan)(guan)質(zhi)檢后(hou)(hou)，用油漆噴上編號、規格(ge)、生產(chan)批號等。并(bing)由吊車吊入(ru)倉庫中。
規格：無縫鋼管的規格用外徑*壁厚毫米數(shu)表示。
大(da)口徑(jing)厚(hou)壁(bi)管分熱軋(ya)和冷(leng)軋(ya)（撥(bo)）無縫鋼管兩類。
熱(re)軋無縫鋼(gang)管分一(yi)般鋼(gang)管，低、中壓(ya)鍋爐(lu)鋼(gang)管，高(gao)壓(ya)鍋爐(lu)鋼(gang)管、合金鋼(gang)管、不銹鋼(gang)管、石油裂化管、地質鋼(gang)管和其它鋼(gang)管等。
冷軋(ya)（撥）無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)除分一般鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、低(di)中壓(ya)鍋爐鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、高壓(ya)鍋爐鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、合金(jin)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、不銹(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、石油裂化(hua)管(guan)(guan)(guan)(guan)(guan)、其它鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)外，還包括碳素薄(bo)壁鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、合金(jin)薄(bo)壁鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、不銹(xiu)薄(bo)壁鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、異型鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。熱(re)軋(ya)無縫管(guan)(guan)(guan)(guan)(guan)外徑一般大于 32mm，壁厚2.5-75mm，冷軋(ya)無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)處徑可以(yi)到6mm，壁厚可到0.25mm，薄(bo)壁管(guan)(guan)(guan)(guan)(guan)外徑可到5mm，壁厚小(xiao)于0.25mm，冷軋(ya)比熱(re)軋(ya)尺寸精度高。
一(yi)般用(yong)(yong)無縫(feng)鋼管：是用(yong)(yong)10、20、30、35、45等(deng)(deng)優質碳結鋼16Mn、5MnV等(deng)(deng)低(di)合金結構鋼或(huo)40Cr、30CrMnSi、45Mn2、40MnB等(deng)(deng)合金鋼熱軋或(huo)冷(leng)軋制(zhi)成的。10、20等(deng)(deng)低(di)碳鋼制(zhi)造(zao)的無縫(feng)管主要(yao)用(yong)(yong)于(yu)流體輸送管道。45、40Cr等(deng)(deng)中碳鋼制(zhi)成的無縫(feng)管用(yong)(yong)來制(zhi)造(zao)機(ji)械(xie)零件(jian)，如汽車、拖拉機(ji)的受力零件(jian)。一(yi)般用(yong)(yong)無縫(feng)鋼管要(yao)保證強度和(he)壓(ya)扁試(shi)驗(yan)。熱軋鋼管以(yi)熱軋狀態或(huo)熱處(chu)理狀態交貨(huo)；冷(leng)軋以(yi)熱處(chu)理狀態交貨(huo)。
低中壓鍋(guo)爐用無(wu)縫鋼管：用于制造各種(zhong)低中壓鍋(guo)爐、過(guo)熱(re)蒸汽(qi)管、沸水(shui)管、水(shui)冷壁管及機(ji)車鍋(guo)爐用過(guo)熱(re)蒸汽(qi)管、大煙(yan)管、小(xiao)煙(yan)管和拱(gong)磚(zhuan)管等。用優(you)質碳素結構鋼熱(re)軋或冷軋（撥(bo)）無(wu)縫鋼管。主要用10、20號鋼制造，除保證(zheng)化學成分和機(ji)械性能(neng)外要做水(shui)壓試驗，卷邊、擴口、壓扁(bian)等試驗。熱(re)軋以(yi)熱(re)軋狀(zhuang)態(tai)交貨(huo)、冷軋（撥(bo)）以(yi)熱(re)處理狀(zhuang)態(tai)交貨(huo)。
高(gao)(gao)壓(ya)(ya)鍋(guo)(guo)(guo)爐(lu)(lu)鋼(gang)(gang)(gang)(gang)管(guan)(guan)：主要(yao)用來制造高(gao)(gao)壓(ya)(ya)及其(qi)以(yi)(yi)上(shang)壓(ya)(ya)力的蒸汽鍋(guo)(guo)(guo)爐(lu)(lu)管(guan)(guan)道等用的優質碳素結構(gou)鋼(gang)(gang)(gang)(gang)、合金(jin)結構(gou)鋼(gang)(gang)(gang)(gang)和(he)不銹(xiu)耐熱(re)(re)鋼(gang)(gang)(gang)(gang)無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)、這(zhe)些鍋(guo)(guo)(guo)爐(lu)(lu)管(guan)(guan)經常(chang)處于高(gao)(gao)溫和(he)高(gao)(gao)壓(ya)(ya)下工作(zuo)、管(guan)(guan)子在高(gao)(gao)溫煙氣和(he)水蒸汽的作(zuo)用下還(huan)會發(fa)生氧化和(he)腐蝕，因此要(yao)求鋼(gang)(gang)(gang)(gang)管(guan)(guan)有(you)高(gao)(gao)的持久強度(du)、高(gao)(gao)的抗氧化性(xing)能，并具(ju)有(you)良好的組織(zhi)穩定性(xing)，采用鋼(gang)(gang)(gang)(gang)號有(you)：優質碳素結構(gou)鋼(gang)(gang)(gang)(gang)鋼(gang)(gang)(gang)(gang)號有(you)20G、20MnG、25MnG；合金(jin)結構(gou)鋼(gang)(gang)(gang)(gang)鋼(gang)(gang)(gang)(gang)號15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等；有(you)銹(xiu)耐熱(re)(re)鋼(gang)(gang)(gang)(gang)常(chang)用1Cr18Ni9、1Cr18Ni11Nb高(gao)(gao)壓(ya)(ya)鍋(guo)(guo)(guo)爐(lu)(lu)管(guan)(guan)除保證化學成(cheng)分和(he)機械性(xing)能外，要(yao)逐(zhu)根做(zuo)水壓(ya)(ya)試(shi)驗(yan)，要(yao)作(zuo)擴(kuo)口、壓(ya)(ya)扁(bian)試(shi)驗(yan)。鋼(gang)(gang)(gang)(gang)管(guan)(guan)以(yi)(yi)熱(re)(re)處理狀態交貨。此外，對成(cheng)品鋼(gang)(gang)(gang)(gang)管(guan)(guan)顯微組織(zhi)、晶粒度(du)、脫碳層(ceng)也有(you)一定要(yao)求。
地質鉆(zhan)(zhan)(zhan)探(tan)及(ji)石油(you)(you)(you)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)(yong)無(wu)縫(feng)鋼管(guan)(guan)：為探(tan)明地下(xia)巖(yan)層結(jie)構、地下(xia)水、石油(you)(you)(you)、天然氣及(ji)礦產(chan)資源情(qing)況，利用(yong)(yong)(yong)鉆(zhan)(zhan)(zhan)機打(da)(da)井(jing)(jing)。石油(you)(you)(you)、天然氣開采更離不(bu)開打(da)(da)井(jing)(jing)，地質鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)(yong)石油(you)(you)(you)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)(yong)無(wu)縫(feng)鋼管(guan)(guan)是鉆(zhan)(zhan)(zhan)井(jing)(jing)的(de)(de)(de)主要器材，主要包(bao)括巖(yan)芯(xin)外管(guan)(guan)、巖(yan)芯(xin)內(nei)管(guan)(guan)、套管(guan)(guan)、鉆(zhan)(zhan)(zhan)桿(gan)等。由于(yu)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)(yong)管(guan)(guan)要深入到幾千米地層深度(du)工(gong)作(zuo)，工(gong)作(zuo)條件極為復雜(za)，鉆(zhan)(zhan)(zhan)桿(gan)承受(shou)拉、壓、彎(wan)曲、扭轉(zhuan)和(he)不(bu)均衡沖擊載荷等應力作(zuo)用(yong)(yong)(yong)，還要受(shou)到泥漿、巖(yan)石磨損，因此(ci)，要求管(guan)(guan)材必須具有足夠(gou)的(de)(de)(de)強度(du)、硬度(du)、耐磨性和(he)沖擊韌性，鋼管(guan)(guan)用(yong)(yong)(yong)鋼用(yong)(yong)(yong)“DZ”（地質的(de)(de)(de)漢(han)語拼音字頭）加數字一(yi)代(dai)表鋼屈(qu)服點表示，常用(yong)(yong)(yong)的(de)(de)(de)鋼號有DZ45的(de)(de)(de)45MnB、50Mn；DZ50的(de)(de)(de)40Mn2、40Mn2Si；DZ55的(de)(de)(de)40Mn2Mo、40MnVB；DZ60的(de)(de)(de)40MnMoB、DZ65的(de)(de)(de)27MnMoVB。鋼管(guan)(guan)都以熱處理狀態交貨。
石(shi)油裂化管(guan)(guan)(guan)：用(yong)(yong)于石(shi)油煉(lian)廠(chang)的(de)爐管(guan)(guan)(guan)、熱(re)交換器管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)道用(yong)(yong)無縫管(guan)(guan)(guan)。常(chang)用(yong)(yong)優(you)質碳素(su)鋼（10、20）、合金鋼（12CrMo、15CrMo）、耐(nai)熱(re)鋼（12Cr2Mo、15Cr5Mo）、不(bu)(bu)(bu)銹(xiu)鋼（1Cr18Ni9、1Cr18Ni9Ti）制造。鋼管(guan)(guan)(guan)除得(de)證(zheng)化學成分和(he)各種(zhong)機(ji)械(xie)性能外，還要(yao)保(bao)證(zheng)水(shui)壓(ya)、壓(ya)扁、擴口等試驗(yan)(yan)，及(ji)表面(mian)質量和(he)無損(sun)檢(jian)驗(yan)(yan)。鋼管(guan)(guan)(guan)在熱(re)處理狀態(tai)下(xia)交貨(huo)。不(bu)(bu)(bu)銹(xiu)鋼管(guan)(guan)(guan)：用(yong)(yong)各種(zhong)不(bu)(bu)(bu)銹(xiu)鋼熱(re)軋，冷軋的(de)不(bu)(bu)(bu)銹(xiu)鋼管(guan)(guan)(guan)，廣泛應(ying)用(yong)(yong)于石(shi)油、化工(gong)設備(bei)管(guan)(guan)(guan)道和(he)各種(zhong)用(yong)(yong)途的(de)不(bu)(bu)(bu)銹(xiu)鋼結構零(ling)件，除應(ying)保(bao)證(zheng)化學成分和(he)機(ji)械(xie)性能，凡用(yong)(yong)作(zuo)承受流體壓(ya)力的(de)鋼管(guan)(guan)(guan)要(yao)保(bao)證(zheng)水(shui)壓(ya)試驗(yan)(yan)合格(ge)。各種(zhong)專(zhuan)用(yong)(yong)鋼管(guan)(guan)(guan)要(yao)按(an)規定保(bao)證(zheng)條件。
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