2.以(yi)制(zhi)作方(fang)法(fa)(fa)(fa)劃(hua)分(fen)(fen)可(ke)分(fen)(fen)為(wei)推制(zhi)、壓(ya)制(zhi)、鍛制(zhi)、鑄造(zao)等。3.以(yi)制(zhi)造(zao)標(biao)準(zhun)劃(hua)分(fen)(fen)可(ke)分(fen)(fen)為(wei)國(guo)標(biao)、電(dian)標(biao)、船標(biao)、化標(biao)、水標(biao)、美(mei)標(biao)、德標(biao)、日標(biao)、俄標(biao)等。4.按它的(de)(de)(de)曲率(lv)半(ban)(ban)徑(jing)(jing)來(lai)分(fen)(fen)：可(ke)分(fen)(fen)為(wei)長半(ban)(ban)徑(jing)(jing)彎(wan)頭(tou)和(he)(he)短半(ban)(ban)徑(jing)(jing)彎(wan)頭(tou)。長半(ban)(ban)徑(jing)(jing)彎(wan)頭(tou)指(zhi)它的(de)(de)(de)曲率(lv)半(ban)(ban)徑(jing)(jing)等于，即R=；短半(ban)(ban)徑(jing)(jing)彎(wan)頭(tou)指(zhi)它的(de)(de)(de)曲率(lv)半(ban)(ban)徑(jing)(jing)等于管(guan)(guan)(guan)(guan)子(zi)外徑(jing)(jing)，即R=。（D為(wei)彎(wan)頭(tou)直徑(jing)(jing)，R為(wei)曲率(lv)半(ban)(ban)徑(jing)(jing)）。5.若按壓(ya)力(li)等級來(lai)分(fen)(fen)：大約有十七種(zhong)，和(he)(he)美(mei)國(guo)的(de)(de)(de)管(guan)(guan)(guan)(guan)子(zi)標(biao)準(zhun)是(shi)相同(tong)(tong)的(de)(de)(de)，有：Sch5s、Sch10s、Sch10、Sch20、Sch30、Sch40s、STD、Sch40、Sch60、Sch80s、XS;Sch80、SCH100、Sch120、Sch140、Sch160、XXS;其中(zhong)非常(chang)(chang)常(chang)(chang)用的(de)(de)(de)是(shi)STD和(he)(he)XS兩(liang)種(zhong)。同(tong)(tong)心大小(xiao)頭(tou)標(biao)準(zhun)體(ti)(ti)系(xi)編輯國(guo)際(ji)上管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)標(biao)準(zhun)主(zhu)要有兩(liang)個(ge)(ge)體(ti)(ti)系(xi)，即以(yi)德國(guo)DIN（包括原(yuan)蘇聯）為(wei)表示(shi)的(de)(de)(de)歐(ou)洲(zhou)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)體(ti)(ti)系(xi)和(he)(he)以(yi)美(mei)國(guo)ANSI管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)為(wei)表示(shi)的(de)(de)(de)美(mei)洲(zhou)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)體(ti)(ti)系(xi)。除此(ci)之外，還(huan)有日本JIS管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)，但在石油化工裝置中(zhong)一(yi)般(ban)只用于公(gong)用工程，而且(qie)在國(guo)際(ji)上影響(xiang)較(jiao)小(xiao)。現將各國(guo)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)簡(jian)介(jie)于下：1，以(yi)德國(guo)及原(yuan)蘇聯為(wei)表示(shi)的(de)(de)(de)歐(ou)洲(zhou)體(ti)(ti)系(xi)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)2，美(mei)洲(zhou)體(ti)(ti)系(xi)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)標(biao)準(zhun)，以(yi)ANSIB表示(shi)3，英(ying)國(guo)和(he)(he)法(fa)(fa)(fa)國(guo)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)標(biao)準(zhun)，兩(liang)國(guo)各有兩(liang)套(tao)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)標(biao)準(zhun)。綜上所述，國(guo)際(ji)上通用的(de)(de)(de)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)標(biao)準(zhun)可(ke)概括為(wei)兩(liang)個(ge)(ge)不(bu)同(tong)(tong)的(de)(de)(de)，且(qie)不(bu)能互換的(de)(de)(de)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)體(ti)(ti)系(xi)：一(yi)個(ge)(ge)以(yi)德國(guo)為(wei)表示(shi)的(de)(de)(de)歐(ou)洲(zhou)管(guan)(guan)(guan)(guan)法(fa)(fa)(fa)蘭(lan)(lan)(lan)(lan)(lan)體(ti)(ti)系(xi)。溫州偉(wei)誠管(guan)(guan)(guan)(guan)件有限公(gong)司(si)為(wei)您提供碳素鋼大小(xiao)頭(tou)設備(bei)，期待為(wei)您設備(bei)！四(si)川316L大小(xiao)頭(tou)

供(gong)(gong)(gong)(gong)您所(suo)需(xu)supplyallyouneed應用于(yu)多個行業：家裝給水(shui)(shui)(shui)|市(shi)政供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)|二次供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)|采暖供(gong)(gong)(gong)(gong)暖|工業流體|天(tian)然氣等(deng)滿足(zu)不同客戶的需(xu)求：家庭飲(yin)水(shui)(shui)(shui)|市(shi)政環保(bao)|工廠(chang)給排水(shui)(shui)(shui)|自來水(shui)(shui)(shui)入戶|小區(qu)直飲(yin)水(shui)(shui)(shui)等(deng)超(chao)高性價(jia)比的不銹鋼水(shui)(shui)(shui)管(guan)，不銹鋼管(guan)件產品，產品質(zhi)(zhi)(zhi)量(liang)(liang)符合中國GB、美國ASTM、日本JIS等(deng)規(gui)范交期及時(shi)PROMPTDELIVERY交貨期及時(shi)，服務(wu)態度好，售后服務(wu)有(you)保(bao)障強烈的責(ze)任感(gan)，使(shi)命(ming)感(gan)，不斷追求質(zhi)(zhi)(zhi)的提升，量(liang)(liang)的突(tu)破，滿足(zu)客戶需(xu)求品種(zhong)全(quan)(quan)(quan)、規(gui)格(ge)齊(qi)、價(jia)格(ge)優、質(zhi)(zhi)(zhi)量(liang)(liang)好、服務(wu)佳01全(quan)(quan)(quan)新材料(liao)(liao)，防銹力(li)強，避免加(jia)工時(shi)出(chu)現(xian)的質(zhi)(zhi)(zhi)量(liang)(liang)問(wen)題02尺寸(cun)精細，焊(han)道平(ping)整，安全(quan)(quan)(quan)可控，適(shi)合裝配03表面(mian)光(guang)潔外焊(han)縫打磨細膩，適(shi)合拋精光(guang)、鏡光(guang)、電鍍(du)市(shi)面(mian)上的劣質(zhi)(zhi)(zhi)產品01回爐翻新料(liao)(liao)，容(rong)易(yi)生銹，容(rong)易(yi)在折彎(wan)、擴口、錐管(guan)時(shi)開(kai)裂造成(cheng)安全(quan)(quan)(quan)隱患02偷工減料(liao)(liao)，尺寸(cun)不準，焊(han)道不平(ping)，無法裝配03有(you)沙孔(kong)、壓傷、咬邊(bian)、拉傷、碰傷等(deng)。山西國產大小頭廠(chang)家溫州偉誠(cheng)管(guan)件有(you)限(xian)公司致力(li)于(yu)提供(gong)(gong)(gong)(gong)碳素鋼大小頭設備，期待您的光(guang)臨！

國標(biao)）GD0506（電(dian)(dian)(dian)力(li)部(bu)標(biao)準）JB81，JB/T74（機械部(bu)標(biao)準）SH3406（石(shi)化(hua)(hua)部(bu)標(biao)準）HG5010，HG20592（化(hua)(hua)工部(bu)標(biao)準）當(dang)吸(xi)水(shui)(shui)時(shi),吸(xi)水(shui)(shui)管(guan)(guan)(guan)段的(de)(de)水(shui)(shui)壓降(jiang)低,原來溶解在水(shui)(shui)中的(de)(de)氣體會(hui)(hui)離析出(chu)來,如果用(yong)(yong)(yong)(yong)(yong)的(de)(de)是(shi)同心的(de)(de)異(yi)徑(jing)(jing)管(guan)(guan)(guan),這些氣體不(bu)能(neng)及時(shi)排(pai)出(chu),會(hui)(hui)積聚堵(du)塞在突起(qi)處，形(xing)成(cheng)(cheng)氣阻。水(shui)(shui)泵也(ye)會(hui)(hui)出(chu)現(xian)噪聲且(qie)輸水(shui)(shui)能(neng)力(li)極大(da)下(xia)降(jiang)。如果用(yong)(yong)(yong)(yong)(yong)偏心異(yi)徑(jing)(jing)管(guan)(guan)(guan),離析出(chu)的(de)(de)氣體會(hui)(hui)及時(shi)排(pai)出(chu),不(bu)會(hui)(hui)形(xing)成(cheng)(cheng)氣阻.當(dang)管(guan)(guan)(guan)徑(jing)(jing)本身不(bu)大(da),前后(hou)管(guan)(guan)(guan)徑(jing)(jing)差不(bu)大(da)的(de)(de)時(shi)候,用(yong)(yong)(yong)(yong)(yong)同心異(yi)徑(jing)(jing)管(guan)(guan)(guan),可(ke)能(neng)氣阻現(xian)象不(bu)那么(me)(me)明(ming)顯,自(zi)吸(xi)式(shi)在吸(xi)水(shui)(shui)過(guo)程中的(de)(de)氣壓變化(hua)(hua)不(bu)那么(me)(me)大(da),所以危(wei)害沒(mei)有體現(xian)出(chu)來.電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)的(de)(de)制(zhi)(zhi)作：電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)（異(yi)徑(jing)(jing)管(guan)(guan)(guan)）是(shi)用(yong)(yong)(yong)(yong)(yong)于管(guan)(guan)(guan)道變徑(jing)(jing)處的(de)(de)一種管(guan)(guan)(guan)件(jian)。通常采用(yong)(yong)(yong)(yong)(yong)的(de)(de)成(cheng)(cheng)形(xing)工藝(yi)(yi)為(wei)縮(suo)徑(jing)(jing)壓制(zhi)(zhi)、擴徑(jing)(jing)壓制(zhi)(zhi)或縮(suo)徑(jing)(jing)加擴徑(jing)(jing)壓制(zhi)(zhi)，對某些規格(ge)的(de)(de)異(yi)徑(jing)(jing)管(guan)(guan)(guan)也(ye)可(ke)采用(yong)(yong)(yong)(yong)(yong)沖(chong)壓成(cheng)(cheng)形(xing)。a.縮(suo)徑(jing)(jing)/擴徑(jing)(jing)成(cheng)(cheng)形(xing)電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)的(de)(de)縮(suo)徑(jing)(jing)成(cheng)(cheng)形(xing)工藝(yi)(yi)是(shi)將(jiang)與電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)大(da)端(duan)直徑(jing)(jing)相等的(de)(de)管(guan)(guan)(guan)坯(pi)放入成(cheng)(cheng)形(xing)模(mo)(mo)中，通過(guo)沿管(guan)(guan)(guan)坯(pi)軸(zhou)向方向的(de)(de)壓制(zhi)(zhi)，使(shi)金屬沿模(mo)(mo)腔(qiang)運動并收縮(suo)成(cheng)(cheng)形(xing)。根據異(yi)徑(jing)(jing)管(guan)(guan)(guan)變徑(jing)(jing)的(de)(de)大(da)小(xiao)(xiao)(xiao)，分(fen)為(wei)一次(ci)壓制(zhi)(zhi)成(cheng)(cheng)形(xing)或多(duo)次(ci)壓制(zhi)(zhi)成(cheng)(cheng)形(xing)。b.沖(chong)壓成(cheng)(cheng)形(xing)除(chu)使(shi)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)為(wei)原料生(sheng)產(chan)電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)外，對部(bu)分(fen)規格(ge)的(de)(de)電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)還可(ke)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)板采用(yong)(yong)(yong)(yong)(yong)沖(chong)壓成(cheng)(cheng)形(xing)工藝(yi)(yi)進行(xing)生(sheng)產(chan)。拉(la)伸所使(shi)用(yong)(yong)(yong)(yong)(yong)的(de)(de)沖(chong)模(mo)(mo)形(xing)狀參照電(dian)(dian)(dian)標(biao)大(da)小(xiao)(xiao)(xiao)頭(tou)內表面尺寸設計，用(yong)(yong)(yong)(yong)(yong)沖(chong)模(mo)(mo)將(jiang)下(xia)料后(hou)的(de)(de)鋼(gang)(gang)板沖(chong)壓拉(la)伸成(cheng)(cheng)形(xing)。

這些器(qi)材設備的(de)局部，管(guan)(guan)(guan)件(jian)(jian)，也(ye)制成相(xiang)對應的(de)法(fa)(fa)蘭(lan)(lan)形狀，也(ye)稱(cheng)(cheng)為法(fa)(fa)蘭(lan)(lan)連(lian)接。設備法(fa)(fa)蘭(lan)(lan)凡是在兩(liang)個平面在周邊(bian)使用(yong)螺栓(shuan)連(lian)接同(tong)時封閉的(de)連(lian)接零(ling)(ling)件(jian)(jian)，一(yi)般都稱(cheng)(cheng)為“法(fa)(fa)蘭(lan)(lan)”，如通(tong)風(feng)管(guan)(guan)(guan)道的(de)連(lian)接，這一(yi)類零(ling)(ling)件(jian)(jian)可以稱(cheng)(cheng)為“法(fa)(fa)蘭(lan)(lan)類零(ling)(ling)件(jian)(jian)”。PP帶頸(jing)法(fa)(fa)蘭(lan)(lan)【PP法(fa)(fa)蘭(lan)(lan)產(chan)(chan)品介紹(shao)】PP、FRPP管(guan)(guan)(guan)件(jian)(jian)依據(ju)HG20593-92標(biao)準生(sheng)產(chan)(chan)。管(guan)(guan)(guan)件(jian)(jian)產(chan)(chan)品經壓(ya)塑(su)、焊制成型，表面光滑，色澤均勻、結構(gou)合理。管(guan)(guan)(guan)件(jian)(jian)主要品種(zhong)有(you)：法(fa)(fa)蘭(lan)(lan)、接頭(tou)、彎頭(tou)、三(san)通(tong)、異徑管(guan)(guan)(guan)、焊條等。品種(zhong)規格(ge)齊全，與管(guan)(guan)(guan)材同(tong)種(zhong)原(yuan)料(liao)生(sheng)產(chan)(chan)管(guan)(guan)(guan)件(jian)(jian)，工(gong)作壓(ya)力滿(man)足管(guan)(guan)(guan)網壓(ya)力要求。聚(ju)(ju)丙烯(xi)PP管(guan)(guan)(guan)材標(biao)準.執行(xing)QB1929-93。.選(xuan)(xuan)共聚(ju)(ju)級(ji)PP管(guan)(guan)(guan)材專門(men)原(yuan)料(liao)生(sheng)產(chan)(chan)，一(yi)般用(yong)途的(de)壓(ya)力輸(shu)水(shui)，以及飲用(yong)水(shui)的(de)輸(shu)送。.飲用(yong)水(shui)管(guan)(guan)(guan)衛生(sheng)性能符合GB/T17219規定(ding)。我廠生(sheng)產(chan)(chan)的(de)聚(ju)(ju)乙(yi)烯(xi)（HDPE），增強(qiang)聚(ju)(ju)丙烯(xi)（FRPP），超高分子量聚(ju)(ju)乙(yi)烯(xi)（UHMW-PE）管(guan)(guan)(guan)件(jian)(jian)，高密(mi)度(du)聚(ju)(ju)乙(yi)烯(xi)（HDPE）管(guan)(guan)(guan)、均居聚(ju)(ju)丙烯(xi)（PPH）管(guan)(guan)(guan)、聚(ju)(ju)偏(pian)二氟乙(yi)烯(xi)（PVDF）管(guan)(guan)(guan)，。公(gong)司擁(yong)有(you)國產(chan)(chan)流(liu)水(shui)線設備、引進德國流(liu)水(shui)線，生(sheng)產(chan)(chan)口徑為Φ15-900mm，并成立工(gong)程(cheng)塑(su)料(liao)安(an)裝部，以確保售(shou)后服務和質量。其(qi)設計新穎，工(gong)藝先(xian)進，結構(gou)合理，采取一(yi)次性成型，產(chan)(chan)品具有(you)強(qiang)度(du)高，氣密(mi)性好，耐(nai)腐蝕使用(yong)壽命廠，安(an)裝維(wei)修方便特點。碳素鋼大小頭(tou)設備，就選(xuan)(xuan)溫州偉誠管(guan)(guan)(guan)件(jian)(jian)有(you)限公(gong)司，讓您滿(man)意(yi)，歡迎您的(de)來電哦！

電(dian)力(li)部(bu)標(biao)準壓(ya)(ya)(ya)(ya)力(li)容器配套的(de)(de)(de)(de)法蘭、管(guan)(guan)板相應(ying)標(biao)準：J執(zhi)行標(biao)準，機(ji)械部(bu)標(biao)準，石化(hua)部(bu)標(biao)準，船用(yong)(yong)標(biao)準、化(hua)工部(bu)標(biao)準等等。出口(kou)鍛鋼法蘭材質符(fu)合美(mei)國的(de)(de)(de)(de)ASTMA105標(biao)準。無(wu)縫大(da)小頭(tou)(tou)(tou)的(de)(de)(de)(de)制(zhi)(zhi)(zhi)作(zuo)：大(da)小頭(tou)(tou)(tou)（異徑管(guan)(guan)）是(shi)(shi)用(yong)(yong)于(yu)管(guan)(guan)道變(bian)徑處的(de)(de)(de)(de)一種管(guan)(guan)件(jian)。通(tong)常采(cai)用(yong)(yong)的(de)(de)(de)(de)成形(xing)(xing)(xing)工藝為縮(suo)徑壓(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)、擴(kuo)徑壓(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)或縮(suo)徑加(jia)擴(kuo)徑壓(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)，對某些(xie)規格的(de)(de)(de)(de)異徑管(guan)(guan)也可(ke)采(cai)用(yong)(yong)沖壓(ya)(ya)(ya)(ya)成形(xing)(xing)(xing)。縮(suo)徑/擴(kuo)徑成形(xing)(xing)(xing)大(da)小頭(tou)(tou)(tou)的(de)(de)(de)(de)縮(suo)徑成形(xing)(xing)(xing)工藝是(shi)(shi)將與大(da)小頭(tou)(tou)(tou)大(da)端直(zhi)徑相等的(de)(de)(de)(de)管(guan)(guan)坯放入成形(xing)(xing)(xing)模中，通(tong)過沿管(guan)(guan)坯軸(zhou)向方(fang)向的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)，使金屬沿模腔運動并收縮(suo)成形(xing)(xing)(xing)。不(bu)銹鋼厚(hou)壁(bi)大(da)小頭(tou)(tou)(tou)生(sheng)(sheng)產廠家,生(sheng)(sheng)產廠家如(ru)何(he)正(zheng)確制(zhi)(zhi)(zhi)作(zuo)大(da)小頭(tou)(tou)(tou)：如(ru)把管(guan)(guan)徑為426MM的(de)(de)(de)(de)大(da)小頭(tou)(tou)(tou)變(bian)為管(guan)(guan)徑377MM如(ru)何(he)制(zhi)(zhi)(zhi)作(zuo)可(ke)以用(yong)(yong)鑄造(zao)法，但(dan)在沒壓(ya)(ya)(ya)(ya)力(li)鑄造(zao)的(de)(de)(de)(de)條(tiao)件(jian)下不(bu)。管(guan)(guan)子壓(ya)(ya)(ya)(ya)力(li)高的(de)(de)(de)(de)時候性(xing)能不(bu)大(da)好(hao)。用(yong)(yong)鈑金法制(zhi)(zhi)(zhi)造(zao)錐形(xing)(xing)(xing)連(lian)接段，厚(hou)度按426MM的(de)(de)(de)(de)壁(bi)厚(hou)取(qu)，小端車到377mm的(de)(de)(de)(de)壁(bi)厚(hou)。這個方(fang)法被寬泛使用(yong)(yong)了。用(yong)(yong)法可(ke)以將426MM管(guan)(guan)子以曲(qu)線漸變(bian)法縮(suo)口(kou)到377MM，這個要(yao)做個堅固的(de)(de)(de)(de)內(nei)模。機(ji)械性(xing)能和水力(li)性(xing)能都非常好(hao)。溫和一點的(de)(de)(de)(de)方(fang)法是(shi)(shi)用(yong)(yong)滾壓(ya)(ya)(ya)(ya)法縮(suo)口(kou)，在工藝上沒什么太(tai)難的(de)(de)(de)(de)。但(dan)厚(hou)度比(bi)較大(da)的(de)(de)(de)(de)管(guan)(guan)子操作(zuo)比(bi)較吃力(li)。溫州(zhou)偉誠(cheng)管(guan)(guan)件(jian)有限(xian)公(gong)司為您提(ti)供碳素鋼大(da)小頭(tou)(tou)(tou)設備，歡(huan)迎(ying)您的(de)(de)(de)(de)來電(dian)哦！浙江SF2507大(da)小頭(tou)(tou)(tou)服務商(shang)

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4、質量與用(yong)途：大(da)(da)小(xiao)(xiao)頭內外(wai)用(yong)高級拋光設備(bei)處理，達(da)到(dao)表面(mian)精密度要求；此(ci)產品適用(yong)于乳品、食品、啤(pi)酒、飲料(liao)(liao)(liao)、制(zhi)藥(yao)、化妝品等工(gong)(gong)業領域；5、對(dui)外(wai)加工(gong)(gong)：可以(yi)按用(yong)戶(hu)要求來圖(tu)、來樣加工(gong)(gong)非標產品；6、連接方式(shi)：卡箍(gu)(快裝)式(shi)、焊接式(shi)、螺紋(活(huo)接)式(shi)。注意大(da)(da)小(xiao)(xiao)頭也適合于環保除塵行(xing)業中的(de)(de)管(guan)(guan)(guan)(guan)道(dao)變徑，一(yi)(yi)般都(dou)是(shi)鋼板(ban)卷制(zhi)切割焊接而成，管(guan)(guan)(guan)(guan)徑大(da)(da)小(xiao)(xiao)不一(yi)(yi)，材料(liao)(liao)(liao)一(yi)(yi)般都(dou)是(shi)熱軋卷板(ban)，應(ying)用(yong)的(de)(de)非常(chang)好(hao)，可以(yi)節約成本。同(tong)心(xin)大(da)(da)小(xiao)(xiao)頭分(fen)布特征(zheng)編輯(ji)(1)內壓作(zuo)用(yong)下同(tong)心(xin)異徑管(guan)(guan)(guan)(guan)大(da)(da)小(xiao)(xiao)端(duan)的(de)(de)面(mian)積(ji)壓力差產生的(de)(de)彎矩引起大(da)(da)端(duan)相(xiang)對(dui)張開、小(xiao)(xiao)端(duan)相(xiang)對(dui)收縮的(de)(de)現(xian)象；(2)內壓作(zuo)用(yong)下偏(pian)心(xin)異徑管(guan)(guan)(guan)(guan)偏(pian)心(xin)側大(da)(da)端(duan)內表面(mian)及(ji)偏(pian)心(xin)側中部(bu)外(wai)表面(mian)的(de)(de)環向應(ying)力非常(chang)大(da)(da)。同(tong)心(xin)大(da)(da)小(xiao)(xiao)頭分(fen)類(lei)編輯(ji)1.以(yi)材質劃分(fen)：碳鋼:ASTM/ASMEA234WPB、WPC合金(jin):ASTM/ASMEA234WP1-WP12-WP11-WP22-WP5-WP91-WP911、15Mo315CrMoV、35CrMoV不銹鋼:ASTM/ASMEA403WP304-304L-304H-304LN-304NASTM/ASMEA403WP316-316L-316H-316LN-316N-316TiASTM/ASMEA403WP321-321HASTM/ASMEA403WP347-347H低溫鋼:ASTM/ASMEA402WPL3-WPL6高性能鋼:ASTM/ASMEA860WPHY42-46-52-60-65-70鑄鋼，合金(jin)鋼，不銹鋼，銅，鋁合金(jin)，塑料(liao)(liao)(liao)，氬硌瀝，PVC，PPR、RFPP(增強聚(ju)丙烯)等。四川316L大(da)(da)小(xiao)(xiao)頭

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