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Question:

Light steel keel main keel, vice keel spacing generally how much

Light steel keel main keel, vice keel spacing generally how much

Answer:

Fu Long keel and the main keel is vertical row, vice keel and pay keel parallel row, spacing 600mm.
The main keel and pay keel ceiling is this: the main keel and the main keel parallel row, the spacing of 1200mm,

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