<p id="d7hjj"><noframes id="d7hjj">

<p id="d7hjj"></p>
<p id="d7hjj"></p>

<output id="d7hjj"></output>

<p id="d7hjj"></p><p id="d7hjj"><delect id="d7hjj"><address id="d7hjj"></address></delect></p><p id="d7hjj"><listing id="d7hjj"></listing></p>
<pre id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></pre><pre id="d7hjj"></pre>

<pre id="d7hjj"></pre>

<p id="d7hjj"><menuitem id="d7hjj"><address id="d7hjj"></address></menuitem></p><p id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></p>

<output id="d7hjj"></output>

<output id="d7hjj"></output>

<p id="d7hjj"><delect id="d7hjj"></delect></p>

<noframes id="d7hjj"><p id="d7hjj"><output id="d7hjj"></output></p>
<pre id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></pre>

<output id="d7hjj"><delect id="d7hjj"></delect></output>
<p id="d7hjj"></p>
<p id="d7hjj"><delect id="d7hjj"></delect></p>

<output id="d7hjj"></output>

<p id="d7hjj"><delect id="d7hjj"></delect></p>

<pre id="d7hjj"><output id="d7hjj"><listing id="d7hjj"></listing></output></pre>
<p id="d7hjj"><delect id="d7hjj"><listing id="d7hjj"></listing></delect></p>

<p id="d7hjj"></p>

<output id="d7hjj"></output>
<p id="d7hjj"></p><p id="d7hjj"></p><p id="d7hjj"></p>

<output id="d7hjj"></output>
<pre id="d7hjj"></pre>

厚壁不銹鋼管的焊接工藝說明

    焊接厚壁不銹鋼管先清理干凈焊口的油、漆、水、銹等,然后根據壁厚開坡口,厚的就開大一些,薄的就開小一些(角磨機),然后就是對品的縫隙,一般是焊條或焊絲直徑的1- 1.5倍,如果坡口不小心開大了話可以適當留小一些。點固焊至少三點,一般四點比較好干活。焊接的時候應該一半一半焊接,起點*好超過*底點一公分左右,那樣從對面好接頭。如果鋼管壁厚的話,應該分層,至少兩層,**層整圈焊完才可以焊**層。

工藝流程
    圓管坯→加熱→穿孔→三輥斜軋、連軋或擠壓→脫管→定徑(或減徑)→冷卻→矯直→水壓試驗(或探傷)→標記

焊縫余高
    鋼管壁厚不大于 12.5mm 時,焊縫余高不大于 3.0mm;鋼管壁厚大于 12.5mm 時,焊縫余高不大于 3.5mm。

彎曲度
    公稱外徑不大于 168.3mm 的鋼管,應平直或按供需雙方協 議規定的彎曲度指標;
    公稱外徑大于 168.3mm 的鋼管,彎曲度不大于鋼管全長的 0.2%。
    管端壁厚大于4mm的鋼管,管端可加工坡口 30°+5°0°,留根1.6mm±0.8mm,管端斜度小于或等于 5mm。

尊敬的客戶:

  本公司還有鎳基合金管、不銹鋼對焊法蘭、承插管件等產品,您可以通過網頁撥打本公司的服務電話了解更多產品的詳細信息,至善至美的服務是我們的追求,歡迎新老客戶放心選購自己心儀產品,我們將竭誠為您服務!


一本无码久本草在线
<p id="d7hjj"><noframes id="d7hjj">

<p id="d7hjj"></p>
<p id="d7hjj"></p>

<output id="d7hjj"></output>

<p id="d7hjj"></p><p id="d7hjj"><delect id="d7hjj"><address id="d7hjj"></address></delect></p><p id="d7hjj"><listing id="d7hjj"></listing></p>
<pre id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></pre><pre id="d7hjj"></pre>

<pre id="d7hjj"></pre>

<p id="d7hjj"><menuitem id="d7hjj"><address id="d7hjj"></address></menuitem></p><p id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></p>

<output id="d7hjj"></output>

<output id="d7hjj"></output>

<p id="d7hjj"><delect id="d7hjj"></delect></p>

<noframes id="d7hjj"><p id="d7hjj"><output id="d7hjj"></output></p>
<pre id="d7hjj"><output id="d7hjj"><menuitem id="d7hjj"></menuitem></output></pre>

<output id="d7hjj"><delect id="d7hjj"></delect></output>
<p id="d7hjj"></p>
<p id="d7hjj"><delect id="d7hjj"></delect></p>

<output id="d7hjj"></output>

<p id="d7hjj"><delect id="d7hjj"></delect></p>

<pre id="d7hjj"><output id="d7hjj"><listing id="d7hjj"></listing></output></pre>
<p id="d7hjj"><delect id="d7hjj"><listing id="d7hjj"></listing></delect></p>

<p id="d7hjj"></p>

<output id="d7hjj"></output>
<p id="d7hjj"></p><p id="d7hjj"></p><p id="d7hjj"></p>

<output id="d7hjj"></output>
<pre id="d7hjj"></pre>