Pipe shall not be allowed to flash rust before coating.
管道不允许再喷涂前闪锈。
Surface cleaning is critically important for pipe coating, and shot (impeller) blasting is the most suitable derusting method for most kinds of coating materials.
钢管的表面处理是决定覆盖层质量的关键因素，对大多数覆盖层而言，喷(抛)丸除锈法是最理想的除锈方式。
After the coating solidifying, the pipe test should be done with defect detector under the specified voltage.
待涂层固化当前，要应用缺陷检测器在涂料技术标准中规定的电压下对钢管进行检测。
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