大(da)口(kou)徑(jing)合(he)(he)金管(guan)(guan)(guan)(guan)因其加工(gong)(gong)工(gong)(gong)藝不同，分成熱扎(擠壓(ya))無(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)和冷(leng)拔(ba)(ba)(軋)無(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)兩種(zhong)。冷(leng)拔(ba)(ba)(軋)管(guan)(guan)(guan)(guan)又分為圓形管(guan)(guan)(guan)(guan)和異形管(guan)(guan)(guan)(guan)兩種(zhong)，*大(da)優點是能夠回收(shou)。大(da)口(kou)徑(jing)合(he)(he)金管(guan)(guan)(guan)(guan)銷售(shou)主(zhu)要用于化肥設備上(shang)運輸(shu)高(gao)溫高(gao)壓(ya)液(ye)體管(guan)(guan)(guan)(guan)路。代表材(cai)質為20、16Mn、12CrMo、12Cr2Mo等。大(da)口(kou)徑(jing)合(he)(he)金管(guan)(guan)(guan)(guan)是鋼(gang)管(guan)(guan)(guan)(guan)按照生(sheng)產用材(cai)(也就(jiu)是材(cai)料)來(lai)界定的(de)(de)(de)，簡單的(de)(de)(de)說就(jiu)是合(he)(he)金做的(de)(de)(de)管(guan)(guan)(guan)(guan)道;而無(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)是鋼(gang)管(guan)(guan)(guan)(guan)依照生(sheng)產工(gong)(gong)藝(有縫(feng)(feng)無(wu)(wu)縫(feng)(feng))來(lai)界定的(de)(de)(de)，有別于無(wu)(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)的(de)(de)(de)就(jiu)是有縫(feng)(feng)管(guan)(guan)(guan)(guan)，包含直縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)和螺旋管(guan)(guan)(guan)(guan)。

　　大口徑合金管生產(chan)流程

　　熱扎(zha)(擠壓(ya)無縫(feng)管(guan))：圓管(guan)料(liao)→加熱→破(po)孔→三輥斜軋、連軋或擠壓(ya)→脫管(guan)→定徑(jing)(或減徑(jing))→冷卻→坯(pi)管(guan)→矯直→水壓(ya)試驗(或探(tan)傷)→標識(shi)→進庫(ku)。

　　冷拔(軋)無縫管(guan)：圓圓管(guan)料→加熱→破孔→打(da)頭→退火(huo)→酸洗→抹油(鍍銅(tong))→多道(dao)次冷拔(冷扎)→坯管(guan)→熱處理→矯(jiao)直→水(shui)壓試驗(yan)(探傷)→標識→進庫。

　　大口徑合金管(guan)(guan)(guan)是(shi)鋼(gang)管(guan)(guan)(guan)按照(zhao)生(sheng)產用材(cai)(也就是(shi)材(cai)料)來界定(ding)的，簡(jian)單的說就是(shi)合金做的管(guan)(guan)(guan)道;而無(wu)縫(feng)管(guan)(guan)(guan)是(shi)鋼(gang)管(guan)(guan)(guan)依照(zhao)生(sheng)產工(gong)藝(有縫(feng)無(wu)縫(feng))來界定(ding)的，有別(bie)于無(wu)縫(feng)管(guan)(guan)(guan)的就是(shi)有縫(feng)管(guan)(guan)(guan)，包含(han)直縫(feng)鋼(gang)管(guan)(guan)(guan)和螺旋管(guan)(guan)(guan)。