The size of the hole away from the plate edge should be not less than 40 mm, all the hole diameter should be greater than the bolt diameter, heat bilges cold shrink to fit the board.
孔离板材边缘的尺寸应不少于40mm，所有钻孔直径应大于螺栓直径，以适应板的热胀冷缩。
The size of the hole away from the plate edge should be not less than 40 mm, all the hole diameter should be greater than the bolt diameter, heat bilges cold shrink to fit the board.
孔离板材边缘的尺寸应不少于40mm，所有钻孔直径应大于螺栓直径，以适应板的热胀冷缩。
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