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鋼管行業簡介

一、鋼管規格尺寸

A、公(gong)稱(cheng)尺(chi)(chi)寸(cun)：是(shi)標(biao)準中(zhong)規定(ding)的(de)名義尺(chi)(chi)寸(cun)，是(shi)用戶和生產企業希望得到的(de)理想尺(chi)(chi)寸(cun)，也是(shi)合(he)同中(zhong)注明的(de)訂(ding)貨尺(chi)(chi)寸(cun)。

B、實(shi)際尺寸：是生產過程中所得到的實(shi)際尺寸，該尺寸往往大于(yu)或小(xiao)于(yu)公稱尺寸。這種大于(yu)或小(xiao)于(yu)公稱尺寸的現(xian)象稱為偏(pian)差。

C、米(mi)重：每米(mi)重量=0.02466*壁厚*（外徑-壁厚）

二、鋼管的連接方式

鋼管(guan)(guan)(guan)(guan)(guan)的(de)連接(jie)(jie)方式有(you)(you)這幾種：焊(han)(han)接(jie)(jie)、溝(gou)槽卡箍連接(jie)(jie)、法蘭(lan)連接(jie)(jie)、絲接(jie)(jie)、承插口(kou)連接(jie)(jie)。通常我們說的(de)鍍(du)(du)鋅(xin)(xin)鋼管(guan)(guan)(guan)(guan)(guan)指的(de)是鍍(du)(du)鋅(xin)(xin)直縫焊(han)(han)管(guan)(guan)(guan)(guan)(guan)，用(yong)鍍(du)(du)鋅(xin)(xin)鋼板卷(juan)成鋼管(guan)(guan)(guan)(guan)(guan)后(hou)用(yong)埋弧焊(han)(han)焊(han)(han)接(jie)(jie)，管(guan)(guan)(guan)(guan)(guan)壁上有(you)(you)一條焊(han)(han)縫，所以(yi)叫(jiao)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)。

三、鋼管怎么做出來的

1、螺旋鋼(gang)管原(yuan)材料即帶鋼(gang)卷、焊絲、焊劑。

2、 成(cheng)型前帶鋼(gang)經(jing)過(guo)矯平、剪邊(bian)、刨邊(bian)，表(biao)面清理(li)(li)輸(shu)送和予彎邊(bian)處理(li)(li)。

3、采用焊縫(feng)間(jian)(jian)隙(xi)控制(zhi)(zhi)裝置來保證(zheng)焊縫(feng)間(jian)(jian)隙(xi)滿(man)足焊接要求，管徑、錯邊(bian)量和焊縫(feng)間(jian)(jian)隙(xi)都得到嚴格(ge)的控制(zhi)(zhi)。

4、切成單根鋼管后，每批鋼管頭三根要進行嚴格的首檢制度，檢查焊縫的力學性能，化學成份，溶合狀況，鋼管表面質量以及經過無損探傷檢驗，確保制管工藝合格后，鋼管品牌才會將這些產(chan)品正(zheng)式(shi)投入生產(chan)。

四、鋼管是什么材料

鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)按(an)制管(guan)(guan)(guan)(guan)(guan)(guan)(guan)材質(zhi)(即(ji)鋼(gang)種(zhong))可分為：碳(tan)素(su)(su)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和合金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不(bu)銹(xiu)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等。碳(tan)素(su)(su)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)又可分為普通碳(tan)素(su)(su)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和優質(zhi)碳(tan)素(su)(su)結構管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。合金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)又可分為：低合金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合金(jin)(jin)(jin)結構管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、高(gao)合金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、高(gao)強度(du)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。軸承管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、耐熱耐酸不(bu)銹(xiu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、精密合金(jin)(jin)(jin)(如可伐合金(jin)(jin)(jin))管(guan)(guan)(guan)(guan)(guan)(guan)(guan)以(yi)及高(gao)溫合金(jin)(jin)(jin)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等。