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產品中心您(nin)現在的位置：45#無縫鋼管

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(gang)，平均(jun)含(han)碳(tan)量為0.42-0.50%,平均(jun)含(han)硅量為0.17-0.37%,平均(jun)含(han)錳量為0.50-0.80%,平均(jun)含(han)硫量<=0.035%,平均(jun)含(han)磷量<=0.035%,平均(jun)含(han)鉻量<=0.25%,平均(jun)含(han)鎳量<=0.2545鋼(gang)含(han)碳(tan)0.45%左右.

化學成分
牌號	45#無縫管化學成(cheng)分(fen)(質量(liang)分(fen)數)(%)
45	C	Si	Mn	Cr	Ni	Cu
	≤
	0.42-0.50	0.17-0.37	0.50-0.80	0.25	0.30	0.25

應用舉例

45#無(wu)縫(feng)管主(zhu)要(yao)用于制(zhi)造齒輪、齒條、鏈輪、軸、鍵、銷、蒸汽透平(ping)機的葉輪、壓(ya)縮機泵的零(ling)件。%,

加工處理

推薦熱處理溫度(du)：正火850，淬火840，回火600. 45號鋼(gang)為(wei) 優質(zhi)碳素結構用(yong)(yong)鋼(gang) ,硬度(du)不高易切削加工(gong),模具中常(chang)用(yong)(yong)來做模板(ban),梢子(zi),導柱(zhu)等(deng),但須熱處理。

1. 45號鋼淬火后沒(mei)有回火之前(qian)，硬(ying)(ying)度大于HRC55（最(zui)高(gao)(gao)可達HRC62）為合格。實際應用的最(zui)高(gao)(gao)硬(ying)(ying)度為HRC55（高(gao)(gao)頻淬火HRC58）。

2. 45號鋼(gang)不(bu)要(yao)采(cai)(cai)用滲(shen)碳淬(cui)火(huo)的(de)(de)(de)熱處(chu)(chu)(chu)理(li)(li)工(gong)藝(yi)。調質處(chu)(chu)(chu)理(li)(li)后(hou)零(ling)(ling)(ling)件(jian)(jian)具有良(liang)好的(de)(de)(de)綜合(he)機械性(xing)能(neng)，廣泛應(ying)用于(yu)(yu)各種重要(yao)的(de)(de)(de)結(jie)構零(ling)(ling)(ling)件(jian)(jian)，特別(bie)是(shi)那些在交變負荷下工(gong)作的(de)(de)(de)連桿(gan)、螺栓、齒輪及軸類等(deng)。但表(biao)面(mian)(mian)(mian)硬度(du)較低，不(bu)耐磨(mo)。可用調質+表(biao)面(mian)(mian)(mian)淬(cui)火(huo)提高零(ling)(ling)(ling)件(jian)(jian)表(biao)面(mian)(mian)(mian)硬度(du)。滲(shen)碳處(chu)(chu)(chu)理(li)(li)一般用于(yu)(yu)表(biao)面(mian)(mian)(mian)耐磨(mo)、芯(xin)部耐沖擊的(de)(de)(de)重載零(ling)(ling)(ling)件(jian)(jian)，其耐磨(mo)性(xing)比調質+表(biao)面(mian)(mian)(mian)淬(cui)火(huo)高。其表(biao)面(mian)(mian)(mian)含碳量(liang)0.8－－1.2%，芯(xin)部一般在0.1－－0.25%（特殊情況下采(cai)(cai)用0.35%）。經熱處(chu)(chu)(chu)理(li)(li)后(hou)，表(biao)面(mian)(mian)(mian)可以(yi)獲得很高的(de)(de)(de)硬度(du)（HRC58－－62），芯(xin)部硬度(du)低，耐沖擊。如(ru)果用45號鋼(gang)滲(shen)碳，淬(cui)火(huo)后(hou)芯(xin)部會出現(xian)硬脆的(de)(de)(de)馬氏(shi)體，失去滲(shen)碳處(chu)(chu)(chu)理(li)(li)的(de)(de)(de)優點。現(xian)在采(cai)(cai)用滲(shen)碳工(gong)藝(yi)的(de)(de)(de)材(cai)料，含碳量(liang)都不(bu)高，到0.30%芯(xin)部強(qiang)(qiang)度(du)已經可以(yi)達(da)到很高，應(ying)用上不(bu)多(duo)見。0.35%從來(lai)沒見過實例，只在教科(ke)書里有介紹。可以(yi)采(cai)(cai)用調質+高頻表(biao)面(mian)(mian)(mian)淬(cui)火(huo)的(de)(de)(de)工(gong)藝(yi)，耐磨(mo)性(xing)較滲(shen)碳略差。 GB/T699-1999標準規定的(de)(de)(de)45鋼(gang)推薦熱處(chu)(chu)(chu)理(li)(li)制(zhi)度(du)為850℃正火(huo)、840℃淬(cui)火(huo)、600℃回火(huo)，達(da)到的(de)(de)(de)性(xing)能(neng)為屈(qu)服(fu)強(qiang)(qiang)度(du)≥355MPa ,GB/T699-1999標準規定45鋼(gang)抗拉(la)強(qiang)(qiang)度(du)為600MPa，屈(qu)服(fu)強(qiang)(qiang)度(du)為355MPa，伸長率(lv)為16%，斷面(mian)(mian)(mian)收縮率(lv)為40%，沖擊功(gong)為39J

技術參數

推薦熱(re)處理溫度

正(zheng)火：850

淬火：840

回火：600

抗拉(la)強度(du)：不(bu)小于(yu)600Mpa

屈服強度：不小于355Mpa

伸長率：10%

收縮率(lv)：40%

沖擊功：39J

鋼(gang)材交貨(huo)狀態硬度：不大于

未熱(re)處理：229HBS

退火鋼：197HBS

產品型號 45# GB/8162

產品規格 φ:756MM;壁厚:100MM以下 133*30

鋼管重(zhong)量計算公式

[(外徑-壁厚(hou)(hou))*壁厚(hou)(hou)]*0.02466=kg/米(每米的重量(liang))

概述(shu)

軋(ya)制無縫管(guan)(guan)(guan)(guan)(guan)的原料(liao)是圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)坯(pi)，圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)胚要經(jing)過(guo)切(qie)割機的切(qie)割加(jia)工成長度(du)約(yue)為1米(mi)的坯(pi)料(liao)，并經(jing)傳送(song)(song)帶送(song)(song)到(dao)熔(rong)爐內加(jia)熱。鋼(gang)(gang)(gang)坯(pi)被送(song)(song)入(ru)(ru)熔(rong)爐內加(jia)熱，溫(wen)度(du)大約(yue)為1200攝氏度(du)。燃料(liao)為氫氣(qi)或乙炔(gui)。爐內溫(wen)度(du)控制是關鍵性(xing)的問(wen)題.圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)坯(pi)出爐后(hou)要經(jing)過(guo)壓力穿(chuan)(chuan)(chuan)孔(kong)(kong)機進(jin)行穿(chuan)(chuan)(chuan)空。一般較(jiao)常見(jian)的穿(chuan)(chuan)(chuan)孔(kong)(kong)機是錐(zhui)(zhui)形(xing)輥穿(chuan)(chuan)(chuan)孔(kong)(kong)機，這(zhe)種穿(chuan)(chuan)(chuan)孔(kong)(kong)機生產(chan)效率高，產(chan)品質(zhi)量(liang)好(hao)，穿(chuan)(chuan)(chuan)孔(kong)(kong)擴徑(jing)(jing)量(liang)大，可穿(chuan)(chuan)(chuan)多種鋼(gang)(gang)(gang)種。穿(chuan)(chuan)(chuan)孔(kong)(kong)后(hou)，圓(yuan)(yuan)管(guan)(guan)(guan)(guan)(guan)坯(pi)就先后(hou)被三輥斜軋(ya)、連軋(ya)或擠壓。擠壓后(hou)要脫管(guan)(guan)(guan)(guan)(guan)定(ding)徑(jing)(jing)。定(ding)徑(jing)(jing)機通(tong)過(guo)錐(zhui)(zhui)形(xing)鉆頭高速旋轉入(ru)(ru)鋼(gang)(gang)(gang)胚打(da)孔(kong)(kong)，形(xing)成鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)內徑(jing)(jing)由(you)定(ding)徑(jing)(jing)機鉆頭的外徑(jing)(jing)長度(du)來確(que)定(ding)。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)定(ding)徑(jing)(jing)后(hou)，進(jin)入(ru)(ru)冷(leng)卻塔中(zhong)，通(tong)過(guo)噴水冷(leng)卻，鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)冷(leng)卻后(hou)，就要被矯(jiao)直。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)矯(jiao)直后(hou)由(you)傳送(song)(song)帶送(song)(song)至金屬探(tan)傷機（或水壓實驗）進(jin)行內部探(tan)傷。若(ruo)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)內部有裂紋，氣(qi)泡(pao)等(deng)問(wen)題，將被探(tan)測(ce)出。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)質(zhi)檢后(hou)還要通(tong)過(guo)嚴格的手工挑選。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)質(zhi)檢后(hou)，用油漆噴上編(bian)號、規格、生產(chan)批號等(deng)。并由(you)吊車吊入(ru)(ru)倉庫中(zhong)。

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(gang)管(guan)分熱軋和冷軋（撥）無縫鋼(gang)管(guan)兩(liang)類。

熱(re)軋無縫鋼(gang)(gang)管(guan)分一般鋼(gang)(gang)管(guan)，低、中壓鍋爐鋼(gang)(gang)管(guan)，高壓鍋爐鋼(gang)(gang)管(guan)、合金鋼(gang)(gang)管(guan)、不銹鋼(gang)(gang)管(guan)、石油裂化管(guan)、地質鋼(gang)(gang)管(guan)和(he)其它鋼(gang)(gang)管(guan)等。

冷軋(ya)（撥）無(wu)縫鋼(gang)管(guan)(guan)(guan)除(chu)分一般鋼(gang)管(guan)(guan)(guan)、低中壓(ya)鍋(guo)爐鋼(gang)管(guan)(guan)(guan)、高壓(ya)鍋(guo)爐鋼(gang)管(guan)(guan)(guan)、合(he)金鋼(gang)管(guan)(guan)(guan)、不銹鋼(gang)管(guan)(guan)(guan)、石油裂化管(guan)(guan)(guan)、其它鋼(gang)管(guan)(guan)(guan)外(wai)，還(huan)包括碳素(su)薄壁(bi)鋼(gang)管(guan)(guan)(guan)、合(he)金薄壁(bi)鋼(gang)管(guan)(guan)(guan)、不銹薄壁(bi)鋼(gang)管(guan)(guan)(guan)、異型鋼(gang)管(guan)(guan)(guan)。熱(re)軋(ya)無(wu)縫管(guan)(guan)(guan)外(wai)徑一般大于 32mm，壁(bi)厚(hou)(hou)2.5-75mm，冷軋(ya)無(wu)縫鋼(gang)管(guan)(guan)(guan)處徑可(ke)以到(dao)(dao)6mm，壁(bi)厚(hou)(hou)可(ke)到(dao)(dao)0.25mm，薄壁(bi)管(guan)(guan)(guan)外(wai)徑可(ke)到(dao)(dao)5mm，壁(bi)厚(hou)(hou)小于0.25mm，冷軋(ya)比熱(re)軋(ya)尺寸(cun)精度高。

一般(ban)用(yong)無縫鋼管(guan)(guan)：是用(yong)10、20、30、35、45等(deng)優質碳(tan)結(jie)鋼16Mn、5MnV等(deng)低合(he)金結(jie)構鋼或40Cr、30CrMnSi、45Mn2、40MnB等(deng)合(he)金鋼熱軋或冷(leng)(leng)軋制(zhi)成(cheng)的(de)(de)。10、20等(deng)低碳(tan)鋼制(zhi)造的(de)(de)無縫管(guan)(guan)主要(yao)用(yong)于流(liu)體(ti)輸送管(guan)(guan)道。45、40Cr等(deng)中碳(tan)鋼制(zhi)成(cheng)的(de)(de)無縫管(guan)(guan)用(yong)來制(zhi)造機(ji)械(xie)零件(jian)，如汽車、拖拉機(ji)的(de)(de)受力零件(jian)。一般(ban)用(yong)無縫鋼管(guan)(guan)要(yao)保證強度和壓扁(bian)試驗。熱軋鋼管(guan)(guan)以(yi)熱軋狀(zhuang)態(tai)或熱處(chu)理(li)狀(zhuang)態(tai)交貨；冷(leng)(leng)軋以(yi)熱處(chu)理(li)狀(zhuang)態(tai)交貨。

低中壓(ya)鍋(guo)爐用(yong)(yong)無縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)：用(yong)(yong)于制造各種低中壓(ya)鍋(guo)爐、過熱(re)(re)(re)蒸(zheng)汽管(guan)(guan)(guan)、沸水管(guan)(guan)(guan)、水冷(leng)(leng)壁(bi)管(guan)(guan)(guan)及(ji)機車鍋(guo)爐用(yong)(yong)過熱(re)(re)(re)蒸(zheng)汽管(guan)(guan)(guan)、大煙(yan)管(guan)(guan)(guan)、小煙(yan)管(guan)(guan)(guan)和拱磚管(guan)(guan)(guan)等(deng)。用(yong)(yong)優(you)質(zhi)碳素結構鋼(gang)(gang)熱(re)(re)(re)軋(ya)或冷(leng)(leng)軋(ya)（撥(bo)）無縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)。主要(yao)用(yong)(yong)10、20號(hao)鋼(gang)(gang)制造，除(chu)保證化學成分(fen)和機械性(xing)能外(wai)要(yao)做水壓(ya)試驗，卷邊、擴口(kou)、壓(ya)扁等(deng)試驗。熱(re)(re)(re)軋(ya)以熱(re)(re)(re)軋(ya)狀(zhuang)態交(jiao)貨(huo)(huo)、冷(leng)(leng)軋(ya)（撥(bo)）以熱(re)(re)(re)處理狀(zhuang)態交(jiao)貨(huo)(huo)。

高(gao)(gao)壓鍋(guo)(guo)(guo)爐鋼(gang)(gang)(gang)管：主要(yao)用來(lai)制造(zao)高(gao)(gao)壓及其(qi)以(yi)上壓力的蒸(zheng)汽(qi)鍋(guo)(guo)(guo)爐管道等(deng)用的優質碳素結構(gou)鋼(gang)(gang)(gang)、合(he)金(jin)結構(gou)鋼(gang)(gang)(gang)和(he)不銹耐熱(re)鋼(gang)(gang)(gang)無(wu)縫鋼(gang)(gang)(gang)管、這些鍋(guo)(guo)(guo)爐管經常處(chu)于高(gao)(gao)溫和(he)高(gao)(gao)壓下(xia)工作、管子在(zai)高(gao)(gao)溫煙(yan)氣和(he)水蒸(zheng)汽(qi)的作用下(xia)還會發生氧(yang)化和(he)腐蝕，因此要(yao)求鋼(gang)(gang)(gang)管有(you)高(gao)(gao)的持久強度、高(gao)(gao)的抗氧(yang)化性能，并具(ju)有(you)良好的組織(zhi)穩定性，采用鋼(gang)(gang)(gang)號有(you)：優質碳素結構(gou)鋼(gang)(gang)(gang)鋼(gang)(gang)(gang)號有(you)20G、20MnG、25MnG；合(he)金(jin)結構(gou)鋼(gang)(gang)(gang)鋼(gang)(gang)(gang)號15MoG、20MoG、12CrMoG、15CrMoG、12Cr2MoG、12CrMoVG、12Cr3MoVSiTiB等(deng)；有(you)銹耐熱(re)鋼(gang)(gang)(gang)常用1Cr18Ni9、1Cr18Ni11Nb高(gao)(gao)壓鍋(guo)(guo)(guo)爐管除保證化學成(cheng)分和(he)機械性能外，要(yao)逐根做水壓試驗，要(yao)作擴口、壓扁試驗。鋼(gang)(gang)(gang)管以(yi)熱(re)處(chu)理狀態交貨(huo)。此外，對(dui)成(cheng)品鋼(gang)(gang)(gang)管顯微組織(zhi)、晶粒(li)度、脫(tuo)碳層也(ye)有(you)一定要(yao)求。

地(di)(di)質(zhi)鉆(zhan)(zhan)(zhan)探(tan)及石(shi)(shi)油(you)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)無(wu)縫(feng)鋼管(guan)：為探(tan)明地(di)(di)下巖(yan)層結構(gou)、地(di)(di)下水、石(shi)(shi)油(you)、天(tian)然氣(qi)及礦(kuang)產(chan)資源(yuan)情況，利用(yong)(yong)鉆(zhan)(zhan)(zhan)機打(da)井(jing)。石(shi)(shi)油(you)、天(tian)然氣(qi)開(kai)采更離(li)不開(kai)打(da)井(jing)，地(di)(di)質(zhi)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)石(shi)(shi)油(you)鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)無(wu)縫(feng)鋼管(guan)是鉆(zhan)(zhan)(zhan)井(jing)的主(zhu)要器材，主(zhu)要包括巖(yan)芯(xin)外(wai)管(guan)、巖(yan)芯(xin)內(nei)管(guan)、套(tao)管(guan)、鉆(zhan)(zhan)(zhan)桿(gan)等(deng)。由于鉆(zhan)(zhan)(zhan)探(tan)用(yong)(yong)管(guan)要深入到幾千米地(di)(di)層深度工作，工作條(tiao)件極(ji)為復雜(za)，鉆(zhan)(zhan)(zhan)桿(gan)承受拉(la)、壓、彎曲、扭轉和不均(jun)衡(heng)沖擊載荷等(deng)應力(li)作用(yong)(yong)，還(huan)要受到泥漿、巖(yan)石(shi)(shi)磨(mo)損，因此，要求管(guan)材必須具有足夠的強度、硬(ying)度、耐磨(mo)性和沖擊韌性，鋼管(guan)用(yong)(yong)鋼用(yong)(yong)“DZ”（地(di)(di)質(zhi)的漢語拼音字頭）加數字一代表鋼屈服點(dian)表示，常用(yong)(yong)的鋼號有DZ45的45MnB、50Mn；DZ50的40Mn2、40Mn2Si；DZ55的40Mn2Mo、40MnVB；DZ60的40MnMoB、DZ65的27MnMoVB。鋼管(guan)都以(yi)熱處(chu)理狀態交貨。

石(shi)(shi)油裂化管(guan)(guan)(guan)：用(yong)(yong)(yong)于石(shi)(shi)油煉廠(chang)的爐管(guan)(guan)(guan)、熱(re)交換器管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)道用(yong)(yong)(yong)無(wu)縫管(guan)(guan)(guan)。常用(yong)(yong)(yong)優質碳(tan)素(su)鋼(gang)(gang)(gang)（10、20）、合金鋼(gang)(gang)(gang)（12CrMo、15CrMo）、耐熱(re)鋼(gang)(gang)(gang)（12Cr2Mo、15Cr5Mo）、不(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)（1Cr18Ni9、1Cr18Ni9Ti）制造。鋼(gang)(gang)(gang)管(guan)(guan)(guan)除得證(zheng)化學成(cheng)分和(he)各(ge)種(zhong)機(ji)械性能外，還要保證(zheng)水壓、壓扁、擴口等試驗(yan)(yan)，及表面質量和(he)無(wu)損(sun)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)銹(xiu)(xiu)鋼(gang)(gang)(gang)管(guan)(guan)(guan)：用(yong)(yong)(yong)各(ge)種(zhong)不(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)熱(re)軋(ya)，冷軋(ya)的不(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)管(guan)(guan)(guan)，廣泛(fan)應(ying)用(yong)(yong)(yong)于石(shi)(shi)油、化工(gong)設備管(guan)(guan)(guan)道和(he)各(ge)種(zhong)用(yong)(yong)(yong)途(tu)的不(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)結構零件(jian)，除應(ying)保證(zheng)化學成(cheng)分和(he)機(ji)械性能，凡用(yong)(yong)(yong)作承(cheng)受流體(ti)壓力的鋼(gang)(gang)(gang)管(guan)(guan)(guan)要保證(zheng)水壓試驗(yan)(yan)合格。各(ge)種(zhong)專用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)要按(an)規定保證(zheng)條件(jian)。

無縫管執行標準

1、結構(gou)用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB8162-2008 2、輸(shu)送流(liu)體(ti)用地縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB8163-20083、鍋爐用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB3087-2008 4、鍋爐用高壓(ya)無(wu)(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)：GB5310-2008（ST45.8-Ⅲ型） 5、化(hua)肥設備用高壓(ya)無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB6479-1999 6、地質鉆探(tan)用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：YB235-70 7、石(shi)油鉆探(tan)用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：YB528-65 8、石(shi)油裂(lie)化(hua)用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB9948-88 9、石(shi)油鉆鋌專用無(wu)(wu)(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)：YB691-70 10、汽車半(ban)軸用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB3088-1999 11、船(chuan)舶用無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB5312-1999 12、冷拔冷軋精(jing)密無(wu)(wu)(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)：GB3639-1999 13、各(ge)種(zhong)合金(jin)管(guan)(guan)(guan)(guan)16Mn、27SiMn、15CrMo、35CrMo、12CrMov、20G、40Cr,12Cr1MoV,15CrMo

另外，還有GB/T17396-1998（液(ye)壓支柱用(yong)熱軋(ya)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB3093-1986（柴油(you)機用(yong)高壓無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB/T3639-1983（冷拔(ba)或冷軋(ya)精(jing)密(mi)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB/T3094-1986（冷拔(ba)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管異形鋼(gang)(gang)(gang)管）、GB/T8713-1988（液(ye)壓和氣動(dong)筒用(yong)精(jing)密(mi)內徑(jing)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB13296-1991（鍋爐、熱交換(huan)器用(yong)不銹鋼(gang)(gang)(gang)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB/T14975-1994（結構用(yong)不銹鋼(gang)(gang)(gang)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、GB/T14976-1994（流(liu)體輸送用(yong)不銹鋼(gang)(gang)(gang)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）GB/T5035-1993（汽車(che)半軸套(tao)管用(yong)無(wu)(wu)縫(feng)(feng)(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)管）、API SPEC

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