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冷(leng)拔鋼(gang)(gang)管(guan)(guan)(guan)廠家常規規格現貨,冷(leng)拔鋼(gang)(gang)管(guan)(guan)(guan)用(yong)拉拔、擠壓(ya)、穿孔等方(fang)法生產(chan)的(de)整根鋼(gang)(gang)管(guan)(guan)(guan)表面沒有(you)(you)接縫的(de)鋼(gang)(gang)管(guan)(guan)(guan)。是一(yi)種(zhong)具有(you)(you)中(zhong)空截面、周(zhou)邊沒有(you)(you)接縫的(de)圓形(xing),方(fang)形(xing),矩形(xing)鋼(gang)(gang)材。是用(yong)鋼(gang)(gang)錠或實心管(guan)(guan)(guan)坯經(jing)(jing)穿孔制成(cheng)毛(mao)管(guan)(guan)(guan),然后經(jing)(jing)冷(leng)撥制成(cheng)。1.冷(leng)…