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無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)是由整支圓(yuan)鋼(gang)(gang)(gang)(gang)穿孔(kong)而成的(de)，表面(mian)上沒有(you)焊縫(feng)(feng)(feng)(feng)的(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)，稱之為(wei)無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)。根據(ju)生產(chan)方法，無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)可分熱(re)軋無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)、冷軋無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)、冷拔無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)、擠(ji)壓無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)、頂(ding)管(guan)(guan)(guan)等。按(an)照斷面(mian)形(xing)(xing)狀，無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)分圓(yuan)形(xing)(xing)和異形(xing)(xing)兩種，異形(xing)(xing)管(guan)(guan)(guan)有(you)方形(xing)(xing)、橢圓(yuan)形(xing)(xing)、三角形(xing)(xing)、六角形(xing)(xing)、瓜子形(xing)(xing)、星形(xing)(xing)、 帶翅管(guan)(guan)(guan)多種復雜形(xing)(xing)狀。最大直(zhi)徑達(da)900mm，最小直(zhi)徑為(wei) 4mm。根據(ju)用(yong)途不同， 有(you)厚壁無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)和薄壁無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)。無(wu)縫(feng)(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)主要(yao)用(yong)做石油(you)地質鉆(zhan)探(tan)管(guan)(guan)(guan)、石油(you)化(hua)工用(yong)的(de)裂化(hua)管(guan)(guan)(guan)、鍋 爐管(guan)(guan)(guan)、軸承管(guan)(guan)(guan)以及汽車、拖拉機、航空(kong)用(yong)高精(jing)度結(jie)構鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)。

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