Q345B無(wu)縫鋼管批發 廠(chang)價(jia)直銷結構(gou)大口徑無(wu)縫管 高(gao)壓(ya)鍋爐(lu)無(wu)縫管

無縫鋼管(guan)(guan)(guan)(guan)由整塊(kuai)金屬制成的，表面上(shang)沒有接縫的鋼管(guan)(guan)(guan)(guan)，稱為(wei)無縫鋼管(guan)(guan)(guan)(guan)。根據(ju)方(fang)法，無縫管(guan)(guan)(guan)(guan)分(fen)熱軋管(guan)(guan)(guan)(guan)、冷軋管(guan)(guan)(guan)(guan)、冷拔管(guan)(guan)(guan)(guan)、擠壓(ya)管(guan)(guan)(guan)(guan)、頂管(guan)(guan)(guan)(guan)等。按照(zhao)斷面形(xing)(xing)(xing)(xing)(xing)狀，無縫鋼管(guan)(guan)(guan)(guan)分(fen)圓形(xing)(xing)(xing)(xing)(xing)和異形(xing)(xing)(xing)(xing)(xing)兩種，異形(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)有方(fang)形(xing)(xing)(xing)(xing)(xing)、橢(tuo)圓形(xing)(xing)(xing)(xing)(xing)、三角(jiao)形(xing)(xing)(xing)(xing)(xing)、六角(jiao)形(xing)(xing)(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)(xing)(xing)、星形(xing)(xing)(xing)(xing)(xing)、 帶翅(chi)管(guan)(guan)(guan)(guan)多種復雜(za)形(xing)(xing)(xing)(xing)(xing)狀。直(zhi)徑達650mm，最小直(zhi)徑為(wei) 0.3mm。根據(ju)用途不(bu)同， 有厚壁(bi)管(guan)(guan)(guan)(guan)和薄壁(bi)管(guan)(guan)(guan)(guan)。無縫鋼管(guan)(guan)(guan)(guan)主(zhu)要(yao)用做(zuo)石(shi)油地(di)質(zhi)鉆探管(guan)(guan)(guan)(guan)、石(shi)油化工(gong)用的裂(lie)化管(guan)(guan)(guan)(guan)、鍋 爐管(guan)(guan)(guan)(guan)、軸承管(guan)(guan)(guan)(guan)以(yi)及汽(qi)車(che)、拖拉機、航空用高精度結構鋼管(guan)(guan)(guan)(guan)。

分類：

沿其(qi)橫截面(mian)的(de)周邊上(shang)無接(jie)縫的(de)鋼管(guan)(guan)。根據方法不同分為(wei)熱軋管(guan)(guan)、冷軋管(guan)(guan)、冷拔管(guan)(guan)、擠壓管(guan)(guan)、頂管(guan)(guan)等，均有各自工藝規(gui)定。

材質有普(pu)通和優質碳素(su)結構(gou)鋼（Q215-A～Q275-A和10～50號鋼）、低合金鋼（09MnV、16Mn等(deng)）、合金鋼、不銹(xiu)耐(nai)酸鋼等(deng)。

按用(yong)(yong)途分為一般用(yong)(yong)途的（用(yong)(yong)于輸(shu)水、氣管(guan)道和結構件(jian)、機(ji)械(xie)零(ling)件(jian)）和專用(yong)(yong)的（用(yong)(yong)于鍋爐、地(di)質勘探、軸承、耐酸等）兩類(lei)。