av在线亚洲欧洲日产一区二区_精品一久久香蕉国产线看观看_性少妇VIDEOXXX欧美69_久久久久99精品成人片

無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)是由整支圓(yuan)鋼(gang)(gang)(gang)(gang)穿(chuan)孔而成的(de)，表面上沒有焊縫(feng)的(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，稱之為(wei)無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。根據生產方(fang)法，無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)可分熱軋無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、冷(leng)軋無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、冷(leng)拔無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、擠壓無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、頂管(guan)(guan)(guan)(guan)(guan)等。按照(zhao)斷面形(xing)(xing)(xing)(xing)(xing)狀(zhuang)，無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)分圓(yuan)形(xing)(xing)(xing)(xing)(xing)和(he)異形(xing)(xing)(xing)(xing)(xing)兩種，異形(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)有方(fang)形(xing)(xing)(xing)(xing)(xing)、橢圓(yuan)形(xing)(xing)(xing)(xing)(xing)、三角形(xing)(xing)(xing)(xing)(xing)、六角形(xing)(xing)(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)(xing)(xing)、星形(xing)(xing)(xing)(xing)(xing)、 帶翅管(guan)(guan)(guan)(guan)(guan)多種復雜形(xing)(xing)(xing)(xing)(xing)狀(zhuang)。最大(da)直徑達900mm，最小直徑為(wei) 4mm。根據用(yong)途不同(tong)， 有厚壁(bi)無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)和(he)薄(bo)壁(bi)無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。無縫(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)主要用(yong)做石油地質(zhi)鉆探管(guan)(guan)(guan)(guan)(guan)、石油化(hua)工用(yong)的(de)裂化(hua)管(guan)(guan)(guan)(guan)(guan)、鍋 爐(lu)管(guan)(guan)(guan)(guan)(guan)、軸承管(guan)(guan)(guan)(guan)(guan)以及(ji)汽車、拖(tuo)拉(la)機、航空用(yong)高(gao)精(jing)度(du)結構(gou)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。

山東(dong)信誠(cheng)飛(fei)宇金屬材料有限(xian)公司在制(zhi)造工藝、設備(bei)裝備(bei)。檢(jian)測手(shou)段。計(ji)量(liang)(liang)能力(li)等(deng)方面均達(da)國(guo)內(nei)領先水平，為產品提供可靠地質量(liang)(liang)保證。并獲得中華人民共(gong)和(he)國(guo)交(jiao)通(tong)部(bu)頒發的“全(quan)國(guo)質量(liang)(liang)管理達(da)標(biao)證書(shu)”，“交(jiao)通(tong)工程批量(liang)(liang)制(zhi)造合格(ge)證書(shu)”及“省級重合同(tong)守信用企業(ye)”、“縣先進(jin)企業(ye)”等(deng)多(duo)種榮譽稱號。