Article 33: the main fixed pipelines connected to equipment shall be marked with the name of material inside the pipe and flow direction.
第三十三条与设备连接的主要固定管道应标明管内物料名称、流向。
Article 33: the main fixed pipelines connected to equipment shall be marked with the name of material inside the pipe and flow direction.
第三十三条与设备连接的主要固定管道应标明管内物料名称、流向。
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