A rubber gasket seal is used between a clamp nut of a barrel screw bolt and the outer wall of the barrel body of the utility model.
筒体螺栓的紧固螺母和筒体外壁之间也采用橡胶垫圈密封。
Why does the hanging basket put on the wall nut is six angular shapes?
为什么吊篮穿墙螺丝母是六角形形状的？
Why does the hanging basket put on the wall nut is six angular shapes?
为什么吊篮穿墙螺丝母是六角形形状的？
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