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直縫鋼(gang)管是焊(han)縫與鋼(gang)管縱向平行的鋼(gang)管,通常分為公制(zhi)電焊(han)鋼(gang)管、電焊(han)薄壁(bi)管、變壓(ya)器冷(leng)卻油管等等。直縫焊(han)管生(sheng)產工(gong)藝簡單,生(sheng)產效(xiao)率高(gao),成(cheng)本低,發展較(jiao)快(kuai)。
螺旋焊(han)管的(de)強度(du)一般比直(zhi)(zhi)縫焊(han)管高,能用較(jiao)(jiao)窄的(de)坯(pi)料(liao)生產(chan)管徑較(jiao)(jiao)大的(de)焊(han)管,還可(ke)以用同樣寬度(du)的(de)坯(pi)料(liao)生產(chan)管徑不同的(de)焊(han)管。但(dan)是與相(xiang)同長(chang)(chang)度(du)的(de)直(zhi)(zhi)縫管相(xiang)比,焊(han)縫長(chang)(chang)度(du)增加30~100%,而(er)且生產(chan)速(su)度(du)較(jiao)(jiao)低。
直縫鋼(gang)管是一種(zhong)籠(long)統得叫法(fa),方式(shi)用鋼(gang)帶(dai)生產,在高頻焊接設備直縫焊接的(de)管子(zi)都叫直縫鋼(gang)管。(由于鋼(gang)管的(de)焊接處成一條直線故而得名)。
其(qi)中(zhong)按照用途不(bu)同(tong),又(you)(you)不(bu)同(tong)的(de)后(hou)道生產工序.(大致可分為(wei)腳手架(jia)管(guan)(guan)(guan)(guan)(guan),流(liu)(liu)體(ti)(ti)管(guan)(guan)(guan)(guan)(guan),電(dian)線(xian)套管(guan)(guan)(guan)(guan)(guan),支架(jia)管(guan)(guan)(guan)(guan)(guan),護(hu)欄管(guan)(guan)(guan)(guan)(guan)等幾種(zhong)) 而(er)低(di)壓(ya)流(liu)(liu)體(ti)(ti)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)是直(zhi)縫(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)一(yi)種(zhong),一(yi)般(ban)用水(shui),煤氣(qi)的(de)輸送,在(zai)(zai)焊(han)(han)(han)(han)接(jie)完畢后(hou)比(bi)普通焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)多(duo)加以一(yi)道水(shui)壓(ya)測試,故而(er)低(di)壓(ya)流(liu)(liu)體(ti)(ti)管(guan)(guan)(guan)(guan)(guan)比(bi)普通直(zhi)縫(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)價(jia)格一(yi)般(ban)高(gao)出一(yi)點(按現在(zai)(zai)的(de)市場價(jia)來說,大概高(gao)出80元左右(you)) 例如:焊(han)(han)(han)(han)接(jie)鋼管(guan)(guan)(guan)(guan)(guan)流(liu)(liu)體(ti)(ti)1寸(DN25)(就是Φ33.5*3.25) 焊(han)(han)(han)(han)接(jie)鋼管(guan)(guan)(guan)(guan)(guan):也叫焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan),是用鋼板或(huo)鋼帶(dai)經過彎(wan)曲成型(xing),然(ran)后(hou)經焊(han)(han)(han)(han)接(jie)制(zhi)成。按焊(han)(han)(han)(han)縫(feng)形式分為(wei)直(zhi)縫(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)和螺旋(xuan)(xuan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)。按用途又(you)(you)分為(wei)一(yi)般(ban)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、鍍鋅(xin)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、吹氧焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、電(dian)線(xian)套管(guan)(guan)(guan)(guan)(guan)、公制(zhi)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、托輥(gun)管(guan)(guan)(guan)(guan)(guan)、深井泵(beng)管(guan)(guan)(guan)(guan)(guan)、汽(qi)車用管(guan)(guan)(guan)(guan)(guan)、變(bian)壓(ya)器(qi)管(guan)(guan)(guan)(guan)(guan)、電(dian)焊(han)(han)(han)(han)薄壁管(guan)(guan)(guan)(guan)(guan)、電(dian)焊(han)(han)(han)(han)異型(xing)管(guan)(guan)(guan)(guan)(guan)和螺旋(xuan)(xuan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)。
一(yi)般焊(han)管(guan)(guan):一(yi)般焊(han)管(guan)(guan)用來輸送(song)低壓(ya)(ya)流體(ti)。用Q195A、Q215A、Q235A鋼(gang)制造(zao) 。也(ye)可采用易(yi)于(yu)焊(han)接的其它軟(ruan)鋼(gang)制造(zao)。鋼(gang)管(guan)(guan)要(yao)進行水壓(ya)(ya)、彎曲、壓(ya)(ya)扁等(deng)實(shi)驗,對表面質量有一(yi)定要(yao)求,通常交(jiao)貨(huo)長度為4-10m,常要(yao)求定尺(chi)(或倍尺(chi))交(jiao)貨(huo)。焊(han)管(guan)(guan)的規(gui)格用公(gong)稱口徑 表示(毫米或英寸)公(gong)稱口徑與(yu)實(shi)際不(bu)(bu)同,焊(han)管(guan)(guan)按(an)規(gui)定壁厚(hou)(hou)有普通鋼(gang)管(guan)(guan)和加厚(hou)(hou)鋼(gang)管(guan)(guan)兩種,鋼(gang)管(guan)(guan)按(an)管(guan)(guan)端形式(shi)又分帶(dai)螺(luo)紋和不(bu)(bu)帶(dai)螺(luo)紋兩種,為焊(han)接鋼(gang)管(guan)(guan)尺(chi)寸。