而热镀锌钢管也是限期使用。
文中着重介绍了新工艺采用微氧化还原法的原理生产热镀锌钢管的方法、机理、试验情况等。
Emphasis is laid on applying the principle of "Slight oxidation-reduction method" to production of hot dip galvanized steel pipes. The manufacturing method, mechanism and test results are introduced.
钢管应按设计要求采用热镀锌管。
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