由整塊(kuai)金屬制成的(de)(de)，表面上沒有(you)接縫的(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)，稱為無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)。根據生產方法，無縫管(guan)(guan)(guan)(guan)分熱軋管(guan)(guan)(guan)(guan)、冷軋管(guan)(guan)(guan)(guan)、冷拔管(guan)(guan)(guan)(guan)、擠壓管(guan)(guan)(guan)(guan)、頂管(guan)(guan)(guan)(guan)等。按照斷面形(xing)(xing)狀(zhuang)，無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)分圓(yuan)形(xing)(xing)和(he)異(yi)形(xing)(xing)兩種(zhong)，異(yi)形(xing)(xing)管(guan)(guan)(guan)(guan)有(you)方形(xing)(xing)、橢圓(yuan)形(xing)(xing)、三角(jiao)形(xing)(xing)、六角(jiao)形(xing)(xing)、瓜(gua)子形(xing)(xing)、星形(xing)(xing)、 帶翅管(guan)(guan)(guan)(guan)多種(zhong)復雜形(xing)(xing)狀(zhuang)。最大直(zhi)徑達650mm，最小直(zhi)徑為 0.3mm。根據用(yong)(yong)途不同， 有(you)厚壁(bi)管(guan)(guan)(guan)(guan)和(he)薄壁(bi)管(guan)(guan)(guan)(guan)。無縫鋼(gang)(gang)管(guan)(guan)(guan)(guan)主要(yao)用(yong)(yong)做石(shi)油地質(zhi)鉆探管(guan)(guan)(guan)(guan)、石(shi)油化(hua)工(gong)用(yong)(yong)的(de)(de)裂化(hua)管(guan)(guan)(guan)(guan)、鍋 爐管(guan)(guan)(guan)(guan)、軸承管(guan)(guan)(guan)(guan)以(yi)及汽(qi)車、拖拉機、航空(kong)用(yong)(yong)高精(jing)度結構(gou)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。 |
