This method is a combination of pickling and blast cleaning.
这一方法是酸浸除锈法和喷砂除锈法的组合。
It is important to maintain a proper size of abrasive for air blast cleaning.
保持空气喷砂清理用磨料的正确尺寸很重要。
Care shall be taken to avoid blast cleaning away identification markings on the pipe.
应当小心以避免喷砂时除掉管子上的识别标记。
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