Master ceiling should choose what specifications of light steel keel
Who should choose what kind of light steel keel? The The Problem a little do not understand, how also 'grandpa'? If it is the family of the ceiling, the general main bone with 38 GB can be, the bones of the 50 national standard, hanging 8MM wear silk, 12MM within the iron expansion tube. If the project, the main bones recommended with 50 GB, because the top of the project will have maintenance and other work on top of the job, safety is very important, 38 with 50 main bone can not be a difference.
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The main bone C60 is shown on the chart
