Inside and outside surface anti-corrosion treatment by hot dipping acid.
由热浸酸内外表面防腐处理。
After the hot-rolled steel coil plant sent, the first after three consecutive treatment, the first use hydrochloric acid to remove oxide film, and then to be cold-rolled unit.
经过热轧厂送来的钢卷，先要经过连续三次技术处理，先要用盐酸除去氧化膜，然后才能送到冷轧机组。
After the hot-rolled steel coil plant sent, the first after three consecutive treatment, the first use hydrochloric acid to remove oxide film, and then to be cold-rolled unit.
经过热轧厂送来的钢卷，先要经过连续三次技术处理，先要用盐酸除去氧化膜，然后才能送到冷轧机组。
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