The corrosion survey for the complex unit during the turnaround finds out the minor corrosion in the primary distillation tower (metallurgy: Q235-B) with a coupon corrosion rate of 0.
联合装置在检修期间进行的腐蚀调查表明：常压分馏系统的初馏塔(材质Q 2 35 - B)腐蚀较轻，挂片腐蚀率为0。
The corrosion survey for the complex unit during the turnaround finds out the minor corrosion in the primary distillation tower (metallurgy: Q235-B) with a coupon corrosion rate of 0.
联合装置在检修期间进行的腐蚀调查表明：常压分馏系统的初馏塔(材质Q 2 35 - B)腐蚀较轻，挂片腐蚀率为0。
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