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H-01- All hatch covers, hole for securing pin is not closed, hence securing pin is no used. Closing it is to avoid hatch cover derailing when it is opened at sea. Should be welded with pin. Please see below pictures and sample:
H-01-所有舱口盖,固定销孔未关闭,因此不使用固定销。关闭是为了避免舱口盖在海上打开时脱轨。应用销钉焊接。请看下面的图片和样本:
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