20#厚壁，大口径，特殊材质27simn无缝钢管，现货直销

常用的厚壁无缝钢管执行标准 编辑

<div style="\\\&quot;background-attachment:initial;" background-clip:initial;="" background-image:url(&quot;https:="" bkssl.bdimg.com="" static="" wiki-lemma="" widget="" lemma_content="" maincontent="" basicinfo="" img="" basicinfo-bg_ccaff81.png&quot;);="" background-origin:initial;="" background-position:initial;="" background-repeat:initial;="" background-size:initial;="" clear:both;="" font-size:12px;="" margin:20px="" 0px="" 35px\\\"="">