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	<h2 class="newsinfo_title">劣质不锈钢无缝管常出现的五种状况</h2>
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		  <li>2012-8-17 11:41:36</li>    
		  <li>来源：戴南佳浮不锈钢</li>    
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					  <td width="60"><b>导读：</b></td>
					  <td>劣质不锈钢无缝管常出现的状况如下：</td>
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					  <td width="60"><b>关键字：</b></td>
					  <td>不锈钢无缝管 劣质不锈钢</td>
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<div class="over_x"><p><strong>劣质不锈钢无缝管</strong>常出现的状况如下：</p>
<p>1、劣质<strong>不锈钢无缝钢管</strong>表面易产生结疤。原因有两点：1）材质不均匀，杂质多。2）导卫设备简陋，容易粘钢。</p>
<p>2、劣材表面易产生裂纹，原因是它的坯料是土坯，土坯气孔多，土坯在冷却的过程中由于受到热应力的作用，产生裂痕，经过轧制后就有裂纹。</p>
<p>3、劣质<strong>不锈钢无缝钢管</strong>的横截面呈椭圆形，原因是厂家为了节约材料，成品辊前二道的压下量偏大，这种螺纹钢的强度大大地下降，而且也不符合螺纹钢外形尺寸的标准。</p>
<p>4、劣质<strong>不锈钢无缝钢管</strong>的内径尺寸波动较大，原因是；1）钢温不稳定有阴阳面。2）钢的成分不均匀。3）由于设备简陋，地基强度低，轧机的弹跳大。会出现有同一周内内径变化较大，这样的钢筋受力不均匀易产生断裂。</p>
<p>5、伪劣结构用<strong>不锈钢无缝钢管</strong>的纵筋经常呈波浪形。</p>
<p>（关键词：不锈钢无缝管 劣质不锈钢 ）</p>
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