黄瓜视频下载

可(ke)分為無(wu)縫(feng)鋼(gang)管(guan)(guan)和(he)有縫(feng)鋼(gang)管(guan)(guan)，有縫(feng)鋼(gang)管(guan)(guan)簡(jian)稱為直縫(feng)鋼(gang)管(guan)(guan)。無(wu)縫(feng)鋼(gang)管(guan)(guan)可(ke)用于各種行業的液(ye)體(ti)氣(qi)壓管(guan)(guan)道(dao)(dao)和(he)氣(qi)體(ti)管(guan)(guan)道(dao)(dao)等。焊(han)接管(guan)(guan)道(dao)(dao)可(ke)用于輸水管(guan)(guan)道(dao)(dao)、煤氣(qi)管(guan)(guan)道(dao)(dao)、暖氣(qi)管(guan)(guan)道(dao)(dao)、電器管(guan)(guan)道(dao)(dao)等。

按鋼管用途分

1、管(guan)(guan)(guan)道(dao)(dao)用管(guan)(guan)(guan)。如：水、煤氣管(guan)(guan)(guan)、蒸汽(qi)管(guan)(guan)(guan)道(dao)(dao)用無縫管(guan)(guan)(guan)、石油(you)輸送管(guan)(guan)(guan)、石油(you)天然氣干線用管(guan)(guan)(guan)。農業灌溉用水龍頭(tou)帶管(guan)(guan)(guan)和噴灌用管(guan)(guan)(guan)等。

2、熱工設備用管(guan)。如一般鍋(guo)爐(lu)(lu)用的(de)沸水(shui)管(guan)、過(guo)熱蒸汽(qi)管(guan)，機車鍋(guo)爐(lu)(lu)用的(de)過(guo)熱管(guan)、大煙管(guan)、小煙管(guan)、拱磚管(guan)以及(ji)高溫高壓鍋(guo)爐(lu)(lu)管(guan)等。

3、機(ji)械(xie)工(gong)業用管(guan)(guan)(guan)。如航空結(jie)構(gou)管(guan)(guan)(guan)（圓(yuan)管(guan)(guan)(guan)、橢圓(yuan)管(guan)(guan)(guan)、平橢圓(yuan)管(guan)(guan)(guan)），汽車半軸(zhou)管(guan)(guan)(guan)、車軸(zhou)管(guan)(guan)(guan)、汽車拖拉機(ji)結(jie)構(gou)管(guan)(guan)(guan)、拖拉機(ji)的(de)油冷卻器用管(guan)(guan)(guan)、農(nong)機(ji)用方形管(guan)(guan)(guan)與矩(ju)形管(guan)(guan)(guan)、變壓器用管(guan)(guan)(guan)以及(ji)軸(zhou)承用管(guan)(guan)(guan)等。

4、石油(you)(you)地質鉆(zhan)探(tan)用管。如：石油(you)(you)鉆(zhan)探(tan)管、石油(you)(you)鉆(zhan)桿(gan)（方鉆(zhan)桿(gan)與六角鉆(zhan)桿(gan)）、鉆(zhan)挺(ting)、石油(you)(you)油(you)(you)管、石油(you)(you)套管及各(ge)種管接頭、地質鉆(zhan)探(tan)管（巖心管、套管、主動鉆(zhan)桿(gan)、鉆(zhan)挺(ting)、按箍及銷接頭等）。

5、化學工(gong)業用(yong)(yong)管(guan)。如：石油裂化管(guan)，化工(gong)設備(bei)熱交換器及管(guan)道(dao)用(yong)(yong)管(guan)、不銹耐酸管(guan)、化肥用(yong)(yong)高壓管(guan)以及輸送化工(gong)介質(zhi)用(yong)(yong)管(guan)等。

6、其他各(ge)部門用(yong)(yong)管(guan)。如：容(rong)器(qi)用(yong)(yong)管(guan)（高壓氣瓶用(yong)(yong)管(guan)與(yu)一(yi)般容(rong)器(qi)管(guan)），儀(yi)表(biao)儀(yi)器(qi)用(yong)(yong)管(guan)、手表(biao)殼用(yong)(yong)管(guan)、注射針頭(tou)及其醫(yi)療(liao)器(qi)械(xie)用(yong)(yong)管(guan)等。

按鋼管材質分

鋼(gang)(gang)管(guan)(guan)(guan)按制管(guan)(guan)(guan)材質（即鋼(gang)(gang)種）可(ke)分為(wei)：碳素(su)(su)管(guan)(guan)(guan)和合(he)(he)(he)金(jin)(jin)管(guan)(guan)(guan)、不銹鋼(gang)(gang)管(guan)(guan)(guan)等(deng)。碳素(su)(su)管(guan)(guan)(guan)又可(ke)分為(wei)普通碳素(su)(su)鋼(gang)(gang)管(guan)(guan)(guan)和優質碳素(su)(su)結構(gou)管(guan)(guan)(guan)。合(he)(he)(he)金(jin)(jin)管(guan)(guan)(guan)又可(ke)分為(wei)：低合(he)(he)(he)金(jin)(jin)管(guan)(guan)(guan)、合(he)(he)(he)金(jin)(jin)結構(gou)管(guan)(guan)(guan)、高合(he)(he)(he)金(jin)(jin)管(guan)(guan)(guan)、高強度管(guan)(guan)(guan)。軸(zhou)承(cheng)管(guan)(guan)(guan)、耐熱耐酸(suan)不銹管(guan)(guan)(guan)、精密(mi)合(he)(he)(he)金(jin)(jin)（如可(ke)伐合(he)(he)(he)金(jin)(jin)）管(guan)(guan)(guan)以及高溫合(he)(he)(he)金(jin)(jin)管(guan)(guan)(guan)等(deng)。