(2)工作條件(jian)下一(yi)(yi)一(yi)(yi)介質壓(ya)力(li)和溫度均升高。螺栓被(bei)拉伸，法(fa)蘭(lan)變形，法(fa)蘭(lan)密封面(mian)相對有分(fen)離(li)(li)趨勢(shi)。致使墊片(pian)比(bi)壓(ya)下降。墊片(pian)回彈，鍍(du)鋅三通制作，補(bu)償(chang)或部分(fen)補(bu)償(chang)了(le)法(fa)蘭(lan)分(fen)離(li)(li)的(de)位移。此時的(de)殘(can)余比(bi)壓(ya)若不小(xiao)于(yu)某一(yi)(yi)值(稱為工作密封比(bi)壓(ya)，仍可(ke)保持良好(hao)密封狀態。否則(ze)，將(jiang)發(fa)生(sheng)泄漏(lou)。為了(le)便于(yu)制作，通常是使每個中(zhong)節尺寸(cun)相同(tong)且(qie)中(zhong)節又恰好(hao)分(fen)成兩(liang)個端(duan)節。由兩(liang)個端(duan)節組成的(de)圓管(guan)(guan)彎(wan)(wan)頭俗(su)稱馬蹄彎(wan)(wan)，多個中(zhong)節肋圓管(guan)(guan)彎(wan)(wan)頭俗(su)稱蝦米彎(wan)(wan)頭。圓形彎(wan)(wan)頭的(de)尺寸(cun)即風(feng)管(guan)(guan)的(de)斷面(mian)尺寸(cun)、彎(wan)(wan)曲(qu)角度和彎(wan)(wan)曲(qu)半徑由設計確定。當設計無技術要求時，90三通制作，彎(wan)(wan)曲(qu)半徑和少節數應符合規定。彎(wan)(wan)頭的(de)彎(wan)(wan)曲(qu)半徑越(yue)大、節數越(yue)多，彎(wan)(wan)頭的(de)平滑(hua)度越(yue)好(hao)，圓形彎(wan)(wan)頭的(de)局部阻(zu)力(li)越(yue)小(xiao)。

在搭接法(fa)蘭(lan)(lan)實際上(shang)是完全(quan)相同(tong)的(de)(de)滑動(dong)法(fa)蘭(lan)(lan)，除(chu)非它在孔(kong)和法(fa)蘭(lan)(lan)種族(zu)之間的(de)(de)一(yi)個(ge)(ge)半徑。這是必要的(de)(de)半徑有 法(fa)蘭(lan)(lan)容納搭接存根結束。通常(chang)，搭接法(fa)蘭(lan)(lan)和搭接存根月底(di)交配(pei)一(yi)起將裝配(pei)系統。該插座焊法(fa)蘭(lan)(lan)是一(yi)個(ge)(ge)類(lei)似的(de)(de)滑動(dong)法(fa)蘭(lan)(lan)，五蓮(lian)縣三通制作，除(chu)非它有一(yi)個(ge)(ge)孔(kong)和反孔(kong)尺寸(cun)。計數器(qi)孔(kong)與管(guan)道的(de)(de)匹配(pei)，使管(guan)道插入到法(fa)蘭(lan)(lan)類(lei)似的(de)(de)滑動(dong)法(fa)蘭(lan)(lan)。在較小(xiao)的(de)(de)孔(kong)的(de)(de)直(zhi)徑是一(yi)樣的(de)(de)ID相同(tong)管(guan)道的(de)(de)匹配(pei)。限制是內(nei)置(zhi)的(de)(de)孔(kong)，作為一(yi)個(ge)(ge)專為管(guan)道肩套(tao)停(ting)留在底(di)部。這消除(chu)了(le)任何(he)流量限制在使用插座焊法(fa)蘭(lan)(lan)。

316不(bu)銹鋼(gang)法(fa)(fa)蘭(lan)(lan)嫁接三(san)通(tong)、平整地貼(tie)(tie)合(he)在密封圈上、如用(yong)(yong)(yong)于大(da)口徑(jing)塑膠管(guan)(guan)(guan)(guan)(guan)施工(gong)、適(shi)用(yong)(yong)(yong)于多(duo)種管(guan)(guan)(guan)(guan)(guan)道(dao)外(wai)徑(jing)、 PE化學中文名為(wei)、定做法(fa)(fa)蘭(lan)(lan)開(kai)口三(san)通(tong)、 施用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)：管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、煤(mei)氣管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、給/排水管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、燃油管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、航空/汽車管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、潤滑油管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、泥渣管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、抽吸管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、沖(chong)水發電管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、電纜保護管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、海水/淡水管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、透平機(ji)管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、空調管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、消防管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、通(tong)風管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)、壓縮空氣管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)等、能夠貼(tie)(tie)合(he)不(bu)規則管(guan)(guan)(guan)(guan)(guan)道(dao)表面、 技術特點: 不(bu)需(xu)用(yong)(yong)(yong)電源，法(fa)(fa)蘭(lan)(lan)三(san)通(tong)制(zhi)作(zuo)，不(bu)受遠距(ju)閥門限(xian)制(zhi)，在帶壓的情況下工(gong)作(zuo)，特別適(shi)用(yong)(yong)(yong)煤(mei)礦井下作(zuo)業。