草莓视频在线下载

可分為(wei)無縫(feng)鋼(gang)管(guan)和有縫(feng)鋼(gang)管(guan)，有縫(feng)鋼(gang)管(guan)簡稱為(wei)直縫(feng)鋼(gang)管(guan)。無縫(feng)鋼(gang)管(guan)可用于各種(zhong)行業的液體氣壓(ya)管(guan)道(dao)(dao)和氣體管(guan)道(dao)(dao)等(deng)。焊接管(guan)道(dao)(dao)可用于輸(shu)水管(guan)道(dao)(dao)、煤(mei)氣管(guan)道(dao)(dao)、暖(nuan)氣管(guan)道(dao)(dao)、電器(qi)管(guan)道(dao)(dao)等(deng)。

按鋼管用途分

1、管(guan)(guan)道用(yong)(yong)管(guan)(guan)。如：水(shui)、煤氣管(guan)(guan)、蒸汽(qi)管(guan)(guan)道用(yong)(yong)無縫管(guan)(guan)、石油輸(shu)送管(guan)(guan)、石油天然氣干線用(yong)(yong)管(guan)(guan)。農(nong)業灌(guan)溉用(yong)(yong)水(shui)龍頭帶管(guan)(guan)和噴灌(guan)用(yong)(yong)管(guan)(guan)等(deng)。

2、熱工設(she)備用(yong)管(guan)。如一般鍋爐用(yong)的沸水管(guan)、過熱蒸汽(qi)管(guan)，機(ji)車(che)鍋爐用(yong)的過熱管(guan)、大煙管(guan)、小煙管(guan)、拱磚管(guan)以及(ji)高溫高壓鍋爐管(guan)等。

3、機械工(gong)業(ye)用管(guan)(guan)(guan)。如航空結(jie)構(gou)管(guan)(guan)(guan)（圓管(guan)(guan)(guan)、橢(tuo)(tuo)圓管(guan)(guan)(guan)、平橢(tuo)(tuo)圓管(guan)(guan)(guan)），汽車(che)半(ban)軸管(guan)(guan)(guan)、車(che)軸管(guan)(guan)(guan)、汽車(che)拖拉(la)機結(jie)構(gou)管(guan)(guan)(guan)、拖拉(la)機的(de)油冷卻器用管(guan)(guan)(guan)、農機用方形管(guan)(guan)(guan)與矩形管(guan)(guan)(guan)、變壓器用管(guan)(guan)(guan)以及軸承(cheng)用管(guan)(guan)(guan)等。

4、石(shi)油(you)地(di)質鉆(zhan)探用管。如：石(shi)油(you)鉆(zhan)探管、石(shi)油(you)鉆(zhan)桿（方鉆(zhan)桿與(yu)六角鉆(zhan)桿）、鉆(zhan)挺、石(shi)油(you)油(you)管、石(shi)油(you)套管及各種(zhong)管接頭(tou)(tou)、地(di)質鉆(zhan)探管（巖心(xin)管、套管、主動鉆(zhan)桿、鉆(zhan)挺、按箍及銷接頭(tou)(tou)等）。

5、化(hua)學(xue)工(gong)業用(yong)管(guan)(guan)(guan)。如(ru)：石油(you)裂化(hua)管(guan)(guan)(guan)，化(hua)工(gong)設(she)備(bei)熱交換器(qi)及(ji)管(guan)(guan)(guan)道用(yong)管(guan)(guan)(guan)、不銹耐酸管(guan)(guan)(guan)、化(hua)肥用(yong)高(gao)壓管(guan)(guan)(guan)以及(ji)輸送(song)化(hua)工(gong)介質用(yong)管(guan)(guan)(guan)等。

6、其他各部(bu)門用(yong)管(guan)(guan)。如(ru)：容器(qi)用(yong)管(guan)(guan)（高壓(ya)氣瓶用(yong)管(guan)(guan)與一(yi)般容器(qi)管(guan)(guan)），儀(yi)表儀(yi)器(qi)用(yong)管(guan)(guan)、手表殼用(yong)管(guan)(guan)、注射針頭及其醫療器(qi)械(xie)用(yong)管(guan)(guan)等(deng)。

按鋼管材質分

鋼(gang)(gang)(gang)管(guan)(guan)按制管(guan)(guan)材質（即鋼(gang)(gang)(gang)種）可分(fen)為(wei)：碳(tan)素管(guan)(guan)和合金(jin)(jin)管(guan)(guan)、不銹鋼(gang)(gang)(gang)管(guan)(guan)等。碳(tan)素管(guan)(guan)又(you)(you)可分(fen)為(wei)普通碳(tan)素鋼(gang)(gang)(gang)管(guan)(guan)和優(you)質碳(tan)素結(jie)構管(guan)(guan)。合金(jin)(jin)管(guan)(guan)又(you)(you)可分(fen)為(wei)：低合金(jin)(jin)管(guan)(guan)、合金(jin)(jin)結(jie)構管(guan)(guan)、高合金(jin)(jin)管(guan)(guan)、高強(qiang)度管(guan)(guan)。軸承管(guan)(guan)、耐熱耐酸不銹管(guan)(guan)、精密(mi)合金(jin)(jin)（如可伐合金(jin)(jin)）管(guan)(guan)以及高溫合金(jin)(jin)管(guan)(guan)等。