1. 格栅不应突出船壳板之外
Grating should not be exceeded of shell plate
2. 格栅面与围板支架的距离不大于25mm
The space between plate and support of grating should be no less than 25mm
3. .铰链一端焊在格栅面上,一端焊在船体板上
One end of hinge should be welded on the grating shell, the other one should be welded on the shell plate.
4. 件1 销轴pin(带孔销、螺纹with hole&screw),件2 开口销(open pin),件3 支座板件4 固定板(fixed plate),件5 球型螺母(modular nut),件6 铰链(hinge)。