The existing engineering air conditioning pipe aluminum foil glass wool insulation requirements, supervision and protection layers, with glass cloth as a protective layer. Please follow mandatory specifications,
I think we can find reasons from the following aspects:1, to see how the requirements of the construction drawings, if foil glass wool board clear, no mention of glass cloth, according to the drawings without error, the need to increase it, Party Supervision approval, plus the money!2, to find manufacturers to communicate, so that manufacturers show that aluminum foil, glass, cotton foil foil is the protective layer, do not need to increase other protective layer.3, the design and owners to come in to see their views. Such as glass cloth protective layer do not mention on the design drawings, design will speak for you, otherwise it would be his design errors.4, check list and owner bidding documents, to see the list of project features and bidding documents technical requirements, how to write?.
However, aluminum foil protective layer is easy to break, but for the wind pipe, the impact of no water pipes, can be accepted.
The aluminum foil layer is a protective layer, can no longer increase, such as the use of glass cloth as insulating layer, can be purchased without an aluminum foil protective layer of glass cloth, then brush fire retardant coating.
