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vily
等级:Senior
文章:647
积分:4865
门派:zhangjiagang
注册:2007-3-12 10:55:13 |
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GB/T3092-1993(低压流体输送用镀锌焊接钢管) GB/T3092-1993(低压流体输送用镀锌焊接钢管)。主要用于输送水、煤气、空气、油和取暖热水或蒸汽等一般较低压力流体和其它用途管。其代表材质为:Q235A级钢。
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If you shed tears when you miss the sun, you also miss the stars. |
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