[选材] 预应力金属波纹管用什么材质的镀锌卷

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135****2922 发表于 2018-4-2 阅读: 1487 回复: 2 [复制链接] [只看楼主]
发表于 2018-4-2 22:07:52 来自手机 显示全部楼层
桥梁工程上用的金属波纹管一般都是什么材质。我看到有q195的,也有sgcc的镀锌带钢。然后对于锌层最低又有多少的要求呢? 山东那边的镀锌卷薄度是可以,就是锌层太低了。请教大神,哪个地方的0.25的镀锌带钢比较有性价比优势。本人是在广东地区
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发表于 2018-4-13 22:51:59 显示全部楼层
本帖最后由 欲曙天 于 2018-4-13 22:53 编辑

为啥还非要用金属波纹管啊,塑料的不是也挺好的。你又不需要耐高温,塑料波纹管既耐腐蚀,密封性能和抗渗漏性能高于金属的,不导电,可以防止杂散电流腐蚀,就是贵了点:)
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发表于 2018-4-20 15:37:48 显示全部楼层
欲曙天 发表于 2018-4-13 22:51
为啥还非要用金属波纹管啊,塑料的不是也挺好的。你又不需要耐高温,塑料波纹管既耐腐蚀,密封性能和抗渗漏 ...

同意楼上
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