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乡宁县48*12的20#无缝钢管价格/乡宁县20#结构管现货表
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28×3-3.5-4-5-6 |
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32×3.5-4-5-6-8 |
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34×4-5-6-8 |
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36×3.5-5-6-8 |
|
38×4-5-6-7-8-9-10 |
|
39×3.5-5-8-10 |
|
42×3.5-4-5-6-7-8-9-10 |
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45×3.5-4-5-6-7-8-9 |
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48×3.5-4-5-6-7-8-9-10 |
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51×3.5-4-5-6-7-8-9-10 |