the main keel joints should be smooth

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can be tied to the timber hanging beam, on the floor to withstand against the large keel, the main keel joints should be smooth. (6) Hidden facilities such as plumbing and other facilities, concealed facilities such as water, heat and electrical appliances shall be calibrated for their ceiling installation. (7) When installing secondary keel, the main keel should be used with belly slot, while the secondary keel should control the
distance between the main keel. The first secondary keel should be hooked at both ends, the hook inserted into the main keel slot. The second secondary keel can be staggered at both ends without a hook. Adopt the main keel without holes in the abdomen, then use the stable support to control the main keel spacing, and the stable support spacing is the best at 1.8M. The installation should be placed at both ends of the
vertical keel vertical keel flange. (8) The installation of mineral wool sound-absorbing panels should first be installed from both sides of the center line of the room. After the entire area is installed, press the special parts such as the wall, lamp holes and manholes for installation. First mineral wool sound-absorbing panels on the side of the groove aligned primary - keel flange gently insert, and then insert sheet and another
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