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                内容标题21

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                            保温人孔门

                            发布日期:2020-12-03 16:40


                             
                                    保温人孔门人孔一般设于油罐下部,便于工作人员在安装、清洗、维护时进出油罐或ξ通风。人孔承受很大的液体压力,为了防止渗漏,对人孔门的安装质量必须严格要求。