发布时间:2025-01-31 17:07:25
低压流体输送焊接钢管标准包括焊接钢管和镀锌钢管;
GB/T 3091-2015低压流体输送焊接钢管标准规定了低压流体输送用焊接钢管的尺寸、外形、重量、技术要求、试验方法、检验规则、包装、标志和质量证明书。本标准适用于水、空气、采暖蒸汽和燃气等低压流体输送用直缝电焊钢管、直缝埋弧焊(SAWL)钢管和螺旋缝埋弧焊(SAWH)钢管,并对它们的不同要求分别做了标注,未标注的同时适用于直缝高频电焊钢管、直缝埋弧焊钢管和螺旋缝埋弧焊钢管。本标准代替GB/T 3091-2008《低压流体输送用焊接钢管》。
江门二手房未够5年我是首次购买而且向银行贷多的款要如何选择好
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