machining flange hole 法兰孔加工
improvement of flange hole 法兰孔的改进
flange bolt hole 法兰螺栓孔
washout plug hole flange 洗炉堵孔法兰
flange-bolt-hole 法兰螺栓孔
flange mounting hole 凸缘安装孔
flange prefabricated hole 翻边预制孔
four-hole flange 四孔凸缘盘
sighting hole flange 观察孔法兰
Flange hole inside the tube must be chamfered hole welding.
法兰内孔管件内孔必须倒角焊接。
Then, use the aquarium silicone to seal under the flange around all 4 screw holes and around the pipe hole and screw it down with 4 short wood screws.
接着，用水族箱硅胶把法兰盘底、四个螺丝孔以及管孔周围全都涂抹上，然后钻入四枚木螺钉固定好。
When a bolt is not to play in a large flange bolt hole welding place.
在打螺栓孔的时候是不可以把螺栓孔打在有大型法兰焊口的地方的。
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