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產品中心(xin)您現在的位置(zhi):45#無縫鋼(gang)管
45#無縫鋼管
2021-12-01
45#無縫管屬鋼材中的一種材質。屬優質碳素結構鋼。大量的模具生產公司會用到,做模具鋼使用。45是指此種材質中碳的含量,大概在450左右。此種材質,相對于其他的優碳鋼,也較普遍。組成結構
45鋼,平均(jun)含(han)(han)碳量(liang)為0.42-0.50%,平均(jun)含(han)(han)硅量(liang)為0.17-0.37%,平均(jun)含(han)(han)錳量(liang)為0.50-0.80%,平均(jun)含(han)(han)硫量(liang)<=0.035%,平均(jun)含(han)(han)磷量(liang)<=0.035%,平均(jun)含(han)(han)鉻量(liang)<=0.25%,平均(jun)含(han)(han)鎳(nie)量(liang)<=0.2545鋼含(han)(han)碳0.45%左右.
應用舉例
45#無縫管主要(yao)用于制造齒輪(lun)、齒條(tiao)、鏈輪(lun)、軸、鍵(jian)、銷、蒸汽透平(ping)機(ji)的葉輪(lun)、壓(ya)縮機(ji)泵的零件。%,
加工處理
推(tui)薦熱(re)處理溫度:正火850,淬火840,回火600. 45號鋼(gang)為(wei) 優質碳(tan)素結(jie)構(gou)用鋼(gang) ,硬度不高易切削(xue)加工(gong),模具(ju)中(zhong)常用來做(zuo)模板,梢子,導柱(zhu)等(deng),但須熱(re)處理 。
1. 45號鋼(gang)淬(cui)火(huo)后沒有回火(huo)之前,硬度大于HRC55(最高可(ke)達HRC62)為合格。實際應用(yong)的最高硬度為HRC55(高頻淬(cui)火(huo)HRC58)。
2. 45號(hao)鋼(gang)不要采(cai)用(yong)(yong)(yong)滲(shen)碳(tan)淬火的(de)(de)(de)熱(re)處(chu)理(li)(li)工(gong)藝。調(diao)質(zhi)處(chu)理(li)(li)后(hou)零(ling)件(jian)具有良(liang)好的(de)(de)(de)綜合機械性(xing)能,廣(guang)泛應用(yong)(yong)(yong)于(yu)各種重要的(de)(de)(de)結構(gou)零(ling)件(jian),特別是那些在(zai)(zai)交變負荷下(xia)工(gong)作的(de)(de)(de)連(lian)桿、螺栓、齒輪及軸類(lei)等(deng)。但表(biao)(biao)面(mian)硬度(du)(du)(du)較低,不耐(nai)磨(mo)(mo)。可(ke)(ke)用(yong)(yong)(yong)調(diao)質(zhi)+表(biao)(biao)面(mian)淬火提(ti)高(gao)零(ling)件(jian)表(biao)(biao)面(mian)硬度(du)(du)(du)。滲(shen)碳(tan)處(chu)理(li)(li)一(yi)般用(yong)(yong)(yong)于(yu)表(biao)(biao)面(mian)耐(nai)磨(mo)(mo)、芯部(bu)耐(nai)沖擊的(de)(de)(de)重載零(ling)件(jian),其耐(nai)磨(mo)(mo)性(xing)比調(diao)質(zhi)+表(biao)(biao)面(mian)淬火高(gao)。其表(biao)(biao)面(mian)含(han)碳(tan)量0.8--1.2%,芯部(bu)一(yi)般在(zai)(zai)0.1--0.25%(特殊情況下(xia)采(cai)用(yong)(yong)(yong)0.35%)。經(jing)熱(re)處(chu)理(li)(li)后(hou),表(biao)(biao)面(mian)可(ke)(ke)以獲得很高(gao)的(de)(de)(de)硬度(du)(du)(du)(HRC58--62),芯部(bu)硬度(du)(du)(du)低,耐(nai)沖擊。如果用(yong)(yong)(yong)45號(hao)鋼(gang)滲(shen)碳(tan),淬火后(hou)芯部(bu)會出現硬脆的(de)(de)(de)馬氏體(ti),失去滲(shen)碳(tan)處(chu)理(li)(li)的(de)(de)(de)優點。現在(zai)(zai)采(cai)用(yong)(yong)(yong)滲(shen)碳(tan)工(gong)藝的(de)(de)(de)材料,含(han)碳(tan)量都不高(gao),到(dao)0.30%芯部(bu)強(qiang)度(du)(du)(du)已(yi)經(jing)可(ke)(ke)以達到(dao)很高(gao),應用(yong)(yong)(yong)上不多見。0.35%從(cong)來沒見過實例,只(zhi)在(zai)(zai)教科書(shu)里有介紹。可(ke)(ke)以采(cai)用(yong)(yong)(yong)調(diao)質(zhi)+高(gao)頻表(biao)(biao)面(mian)淬火的(de)(de)(de)工(gong)藝,耐(nai)磨(mo)(mo)性(xing)較滲(shen)碳(tan)略差。 GB/T699-1999標(biao)準規(gui)(gui)定的(de)(de)(de)45鋼(gang)推薦(jian)熱(re)處(chu)理(li)(li)制度(du)(du)(du)為(wei)850℃正火、840℃淬火、600℃回(hui)火,達到(dao)的(de)(de)(de)性(xing)能為(wei)屈服(fu)強(qiang)度(du)(du)(du)≥355MPa ,GB/T699-1999標(biao)準規(gui)(gui)定45鋼(gang)抗拉(la)強(qiang)度(du)(du)(du)為(wei)600MPa,屈服(fu)強(qiang)度(du)(du)(du)為(wei)355MPa,伸長率為(wei)16%,斷(duan)面(mian)收縮(suo)率為(wei)40%,沖擊功為(wei)39J
技術參數
推(tui)薦熱處(chu)理(li)溫度
正(zheng)火:850
淬火:840
回火:600
抗(kang)拉強度:不小于600Mpa
屈服強度:不小于(yu)355Mpa
伸長率:10%
收縮率(lv):40%
沖(chong)擊(ji)功:39J
鋼材交貨狀態硬度(du):不大于
未(wei)熱處理:229HBS
退火鋼:197HBS
產品型號 45# GB/8162
產(chan)品規格 φ:756MM;壁厚:100MM以下 133*30
鋼(gang)管重(zhong)量(liang)計算公(gong)式(shi)
[(外徑-壁(bi)厚(hou))*壁(bi)厚(hou)]*0.02466=kg/米(每米的重量)
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概述
軋(ya)制(zhi)無縫管(guan)(guan)的(de)(de)原料是圓(yuan)(yuan)管(guan)(guan)坯,圓(yuan)(yuan)管(guan)(guan)胚(pei)(pei)要經(jing)過(guo)(guo)(guo)(guo)切(qie)割機(ji)(ji)的(de)(de)切(qie)割加(jia)工(gong)成(cheng)長度(du)約為(wei)1米的(de)(de)坯料,并(bing)經(jing)傳送(song)帶送(song)到熔爐內(nei)加(jia)熱(re)。鋼(gang)(gang)坯被送(song)入(ru)(ru)熔爐內(nei)加(jia)熱(re),溫度(du)大約為(wei)1200攝氏度(du)。燃料為(wei)氫(qing)氣(qi)(qi)或(huo)乙(yi)炔。爐內(nei)溫度(du)控制(zhi)是關鍵性的(de)(de)問題(ti).圓(yuan)(yuan)管(guan)(guan)坯出(chu)爐后(hou)要經(jing)過(guo)(guo)(guo)(guo)壓(ya)(ya)力穿(chuan)(chuan)孔機(ji)(ji)進(jin)行(xing)穿(chuan)(chuan)空。一般較常見的(de)(de)穿(chuan)(chuan)孔機(ji)(ji)是錐形(xing)(xing)輥穿(chuan)(chuan)孔機(ji)(ji),這種穿(chuan)(chuan)孔機(ji)(ji)生產(chan)(chan)效(xiao)率高,產(chan)(chan)品質量(liang)好,穿(chuan)(chuan)孔擴徑量(liang)大,可(ke)穿(chuan)(chuan)多種鋼(gang)(gang)種。穿(chuan)(chuan)孔后(hou),圓(yuan)(yuan)管(guan)(guan)坯就先后(hou)被三輥斜軋(ya)、連軋(ya)或(huo)擠壓(ya)(ya)。擠壓(ya)(ya)后(hou)要脫管(guan)(guan)定徑。定徑機(ji)(ji)通過(guo)(guo)(guo)(guo)錐形(xing)(xing)鉆(zhan)頭(tou)高速旋轉入(ru)(ru)鋼(gang)(gang)胚(pei)(pei)打孔,形(xing)(xing)成(cheng)鋼(gang)(gang)管(guan)(guan)。鋼(gang)(gang)管(guan)(guan)內(nei)徑由定徑機(ji)(ji)鉆(zhan)頭(tou)的(de)(de)外徑長度(du)來確定。鋼(gang)(gang)管(guan)(guan)經(jing)定徑后(hou),進(jin)入(ru)(ru)冷(leng)卻塔(ta)中,通過(guo)(guo)(guo)(guo)噴水冷(leng)卻,鋼(gang)(gang)管(guan)(guan)經(jing)冷(leng)卻后(hou),就要被矯(jiao)直。鋼(gang)(gang)管(guan)(guan)經(jing)矯(jiao)直后(hou)由傳送(song)帶送(song)至金屬探傷(shang)機(ji)(ji)(或(huo)水壓(ya)(ya)實驗)進(jin)行(xing)內(nei)部探傷(shang)。若鋼(gang)(gang)管(guan)(guan)內(nei)部有裂紋,氣(qi)(qi)泡等(deng)問題(ti),將被探測出(chu)。鋼(gang)(gang)管(guan)(guan)質檢后(hou)還要通過(guo)(guo)(guo)(guo)嚴格的(de)(de)手工(gong)挑(tiao)選。鋼(gang)(gang)管(guan)(guan)質檢后(hou),用油(you)漆噴上(shang)編號、規格、生產(chan)(chan)批號等(deng)。并(bing)由吊(diao)(diao)車吊(diao)(diao)入(ru)(ru)倉庫中。
規格:無縫鋼管的規格用外徑*壁厚毫米數表示。
無縫管的分類
無縫鋼管分熱軋(ya)(ya)和(he)冷軋(ya)(ya)(撥)無縫鋼管兩(liang)類。
熱軋(ya)無縫(feng)鋼(gang)(gang)管分一(yi)般(ban)鋼(gang)(gang)管,低、中壓鍋爐鋼(gang)(gang)管,高壓鍋爐鋼(gang)(gang)管、合金鋼(gang)(gang)管、不(bu)銹鋼(gang)(gang)管、石油裂化管、地(di)質(zhi)鋼(gang)(gang)管和其(qi)它鋼(gang)(gang)管等。
冷軋(撥(bo))無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)除分一般鋼(gang)(gang)(gang)管(guan)(guan)、低中壓(ya)鍋爐鋼(gang)(gang)(gang)管(guan)(guan)、高(gao)壓(ya)鍋爐鋼(gang)(gang)(gang)管(guan)(guan)、合(he)金鋼(gang)(gang)(gang)管(guan)(guan)、不(bu)銹鋼(gang)(gang)(gang)管(guan)(guan)、石(shi)油(you)裂(lie)化(hua)管(guan)(guan)、其它鋼(gang)(gang)(gang)管(guan)(guan)外(wai)(wai),還包括碳素薄(bo)壁鋼(gang)(gang)(gang)管(guan)(guan)、合(he)金薄(bo)壁鋼(gang)(gang)(gang)管(guan)(guan)、不(bu)銹薄(bo)壁鋼(gang)(gang)(gang)管(guan)(guan)、異型(xing)鋼(gang)(gang)(gang)管(guan)(guan)。熱軋無縫(feng)(feng)管(guan)(guan)外(wai)(wai)徑一般大于 32mm,壁厚2.5-75mm,冷軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)處徑可(ke)以到6mm,壁厚可(ke)到0.25mm,薄(bo)壁管(guan)(guan)外(wai)(wai)徑可(ke)到5mm,壁厚小于0.25mm,冷軋比熱軋尺寸精(jing)度高(gao)。
一(yi)般(ban)用(yong)(yong)無縫(feng)鋼(gang)管(guan)(guan):是(shi)用(yong)(yong)10、20、30、35、45等(deng)優質碳(tan)結鋼(gang)16Mn、5MnV等(deng)低合金(jin)結構鋼(gang)或40Cr、30CrMnSi、45Mn2、40MnB等(deng)合金(jin)鋼(gang)熱(re)(re)軋或冷(leng)(leng)軋制成(cheng)的(de)。10、20等(deng)低碳(tan)鋼(gang)制造的(de)無縫(feng)管(guan)(guan)主要用(yong)(yong)于流體輸(shu)送管(guan)(guan)道(dao)。45、40Cr等(deng)中碳(tan)鋼(gang)制成(cheng)的(de)無縫(feng)管(guan)(guan)用(yong)(yong)來制造機械零件(jian),如汽車、拖拉機的(de)受力零件(jian)。一(yi)般(ban)用(yong)(yong)無縫(feng)鋼(gang)管(guan)(guan)要保證(zheng)強度和壓扁(bian)試(shi)驗。熱(re)(re)軋鋼(gang)管(guan)(guan)以熱(re)(re)軋狀(zhuang)態或熱(re)(re)處理狀(zhuang)態交貨(huo);冷(leng)(leng)軋以熱(re)(re)處理狀(zhuang)態交貨(huo)。
低(di)中壓鍋爐(lu)用(yong)(yong)無縫鋼管(guan):用(yong)(yong)于(yu)制造(zao)各(ge)種低(di)中壓鍋爐(lu)、過(guo)熱蒸汽(qi)(qi)管(guan)、沸水管(guan)、水冷壁(bi)管(guan)及(ji)機(ji)車鍋爐(lu)用(yong)(yong)過(guo)熱蒸汽(qi)(qi)管(guan)、大煙(yan)管(guan)、小煙(yan)管(guan)和(he)拱磚管(guan)等。用(yong)(yong)優質碳素結構鋼熱軋(ya)或冷軋(ya)(撥)無縫鋼管(guan)。主(zhu)要用(yong)(yong)10、20號鋼制造(zao),除保證化學成分和(he)機(ji)械性(xing)能(neng)外要做(zuo)水壓試驗,卷邊、擴口、壓扁等試驗。熱軋(ya)以熱軋(ya)狀態交(jiao)貨、冷軋(ya)(撥)以熱處理狀態交(jiao)貨。
高(gao)(gao)(gao)壓(ya)(ya)鍋(guo)爐(lu)鋼(gang)(gang)管(guan):主要(yao)用(yong)(yong)來(lai)制造高(gao)(gao)(gao)壓(ya)(ya)及其以上壓(ya)(ya)力的(de)蒸(zheng)(zheng)汽鍋(guo)爐(lu)管(guan)道等用(yong)(yong)的(de)優質碳素結構(gou)(gou)鋼(gang)(gang)、合金(jin)結構(gou)(gou)鋼(gang)(gang)和(he)(he)不(bu)銹(xiu)耐熱鋼(gang)(gang)無縫(feng)鋼(gang)(gang)管(guan)、這些鍋(guo)爐(lu)管(guan)經(jing)常處于高(gao)(gao)(gao)溫(wen)和(he)(he)高(gao)(gao)(gao)壓(ya)(ya)下工作、管(guan)子在高(gao)(gao)(gao)溫(wen)煙氣和(he)(he)水(shui)(shui)蒸(zheng)(zheng)汽的(de)作用(yong)(yong)下還會發(fa)生氧(yang)化和(he)(he)腐蝕,因此要(yao)求鋼(gang)(gang)管(guan)有(you)(you)(you)高(gao)(gao)(gao)的(de)持久強度、高(gao)(gao)(gao)的(de)抗氧(yang)化性(xing)(xing)能(neng),并具有(you)(you)(you)良好的(de)組(zu)織(zhi)(zhi)穩定(ding)性(xing)(xing),采用(yong)(yong)鋼(gang)(gang)號(hao)有(you)(you)(you):優質碳素結構(gou)(gou)鋼(gang)(gang)鋼(gang)(gang)號(hao)有(you)(you)(you)20G、20MnG、25MnG;合金(jin)結構(gou)(gou)鋼(gang)(gang)鋼(gang)(gang)號(hao)15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等;有(you)(you)(you)銹(xiu)耐熱鋼(gang)(gang)常用(yong)(yong)1Cr18Ni9、1Cr18Ni11Nb高(gao)(gao)(gao)壓(ya)(ya)鍋(guo)爐(lu)管(guan)除保證化學(xue)成分和(he)(he)機械性(xing)(xing)能(neng)外,要(yao)逐根做水(shui)(shui)壓(ya)(ya)試驗,要(yao)作擴口、壓(ya)(ya)扁試驗。鋼(gang)(gang)管(guan)以熱處理狀態交貨。此外,對成品(pin)鋼(gang)(gang)管(guan)顯微(wei)組(zu)織(zhi)(zhi)、晶粒度、脫碳層(ceng)也有(you)(you)(you)一(yi)定(ding)要(yao)求。
地(di)質鉆(zhan)探及石油鉆(zhan)探用(yong)(yong)(yong)無(wu)縫(feng)鋼管(guan)(guan):為探明地(di)下巖(yan)層結構、地(di)下水(shui)、石油、天然氣及礦產資源情況(kuang),利用(yong)(yong)(yong)鉆(zhan)機打井。石油、天然氣開采更(geng)離(li)不開打井,地(di)質鉆(zhan)探用(yong)(yong)(yong)石油鉆(zhan)探用(yong)(yong)(yong)無(wu)縫(feng)鋼管(guan)(guan)是鉆(zhan)井的(de)主要(yao)器材(cai),主要(yao)包括(kuo)巖(yan)芯外管(guan)(guan)、巖(yan)芯內管(guan)(guan)、套(tao)管(guan)(guan)、鉆(zhan)桿等。由于鉆(zhan)探用(yong)(yong)(yong)管(guan)(guan)要(yao)深(shen)入到(dao)幾千米地(di)層深(shen)度工作(zuo),工作(zuo)條件極(ji)為復(fu)雜,鉆(zhan)桿承受(shou)(shou)拉(la)、壓、彎曲(qu)、扭(niu)轉和(he)不均衡沖(chong)擊(ji)載(zai)荷等應力(li)作(zuo)用(yong)(yong)(yong),還(huan)要(yao)受(shou)(shou)到(dao)泥漿、巖(yan)石磨損,因此,要(yao)求(qiu)管(guan)(guan)材(cai)必須具有足夠的(de)強(qiang)度、硬(ying)度、耐(nai)磨性和(he)沖(chong)擊(ji)韌(ren)性,鋼管(guan)(guan)用(yong)(yong)(yong)鋼用(yong)(yong)(yong)“DZ”(地(di)質的(de)漢語(yu)拼音字(zi)頭(tou))加數字(zi)一代表鋼屈(qu)服(fu)點表示,常用(yong)(yong)(yong)的(de)鋼號(hao)有DZ45的(de)45MnB、50Mn;DZ50的(de)40Mn2、40Mn2Si;DZ55的(de)40Mn2Mo、40MnVB;DZ60的(de)40MnMoB、DZ65的(de)27MnMoVB。鋼管(guan)(guan)都以熱(re)處(chu)理狀態交貨(huo)。
石油(you)裂化(hua)(hua)管(guan)(guan)(guan):用于石油(you)煉廠的(de)爐管(guan)(guan)(guan)、熱(re)交換(huan)器管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)道(dao)用無縫管(guan)(guan)(guan)。常用優(you)質(zhi)碳素鋼(gang)(gang)(gang)(10、20)、合(he)金鋼(gang)(gang)(gang)(12CrMo、15CrMo)、耐熱(re)鋼(gang)(gang)(gang)(12Cr2Mo、15Cr5Mo)、不(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(1Cr18Ni9、1Cr18Ni9Ti)制造。鋼(gang)(gang)(gang)管(guan)(guan)(guan)除(chu)得證化(hua)(hua)學(xue)成分(fen)和(he)各種機械(xie)性能外,還要(yao)保證水(shui)壓(ya)、壓(ya)扁、擴口等試驗(yan)(yan),及表面質(zhi)量和(he)無損檢驗(yan)(yan)。鋼(gang)(gang)(gang)管(guan)(guan)(guan)在熱(re)處理狀(zhuang)態下交貨。不(bu)(bu)(bu)銹鋼(gang)(gang)(gang)管(guan)(guan)(guan):用各種不(bu)(bu)(bu)銹鋼(gang)(gang)(gang)熱(re)軋(ya),冷軋(ya)的(de)不(bu)(bu)(bu)銹鋼(gang)(gang)(gang)管(guan)(guan)(guan),廣泛(fan)應(ying)用于石油(you)、化(hua)(hua)工(gong)設(she)備管(guan)(guan)(guan)道(dao)和(he)各種用途的(de)不(bu)(bu)(bu)銹鋼(gang)(gang)(gang)結(jie)構(gou)零件(jian),除(chu)應(ying)保證化(hua)(hua)學(xue)成分(fen)和(he)機械(xie)性能,凡用作承受流體壓(ya)力的(de)鋼(gang)(gang)(gang)管(guan)(guan)(guan)要(yao)保證水(shui)壓(ya)試驗(yan)(yan)合(he)格。各種專用鋼(gang)(gang)(gang)管(guan)(guan)(guan)要(yao)按規定保證條件(jian)。
無縫管執行標準
1、結構用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB8162-2008 2、輸送流體用(yong)地(di)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB8163-20083、鍋爐用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB3087-2008 4、鍋爐用(yong)高(gao)(gao)壓無(wu)縫(feng)(feng)(feng)(feng)管(guan):GB5310-2008(ST45.8-Ⅲ型) 5、化(hua)肥設備用(yong)高(gao)(gao)壓無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB6479-1999 6、地(di)質鉆(zhan)探用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):YB235-70 7、石(shi)油鉆(zhan)探用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):YB528-65 8、石(shi)油裂化(hua)用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB9948-88 9、石(shi)油鉆(zhan)鋌(ting)專用(yong)無(wu)縫(feng)(feng)(feng)(feng)管(guan):YB691-70 10、汽車半(ban)軸(zhou)用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB3088-1999 11、船(chuan)舶用(yong)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB5312-1999 12、冷(leng)拔(ba)冷(leng)軋精密無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan):GB3639-1999 13、各種合(he)金管(guan)16Mn、27SiMn、15CrMo、35CrMo、12CrMov、20G、40Cr,12Cr1MoV,15CrMo
另外,還有GB/T17396-1998(液壓支柱用(yong)(yong)熱軋(ya)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB3093-1986(柴(chai)油機用(yong)(yong)高(gao)壓無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB/T3639-1983(冷(leng)拔(ba)或冷(leng)軋(ya)精密無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB/T3094-1986(冷(leng)拔(ba)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan)異形鋼(gang)(gang)(gang)管(guan))、GB/T8713-1988(液壓和氣動筒(tong)用(yong)(yong)精密內徑無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB13296-1991(鍋爐、熱交換器用(yong)(yong)不(bu)銹鋼(gang)(gang)(gang)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB/T14975-1994(結(jie)構用(yong)(yong)不(bu)銹鋼(gang)(gang)(gang)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、GB/T14976-1994(流體輸(shu)送用(yong)(yong)不(bu)銹鋼(gang)(gang)(gang)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))GB/T5035-1993(汽車半軸套管(guan)用(yong)(yong)無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)管(guan))、API SPEC
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