一段话21? 2.the joint faces of flanged openings not fitted with service covers shall be cleaned and protected with 10mm thick bolted metal covers utilising rubber gaskets and at least four bolts. 未配对工作法兰盖的,法兰接口处应当清洁并且使用10mm厚度的工作法兰盖,橡胶垫片和不少于4个螺栓将其(密封) 保护 . 3.openings with service covers shall be cleaned and fitted with their service covers ,gaskets and bolting. 法兰接口处有 配对工作法兰盖的 ,接口处应当清洁并配备其 工作法兰盖 ,垫片和螺栓连接件. 参考标准:压力容器涂敷与运输包装,见附件内容. 查看更多