【1】 High strength bolts can be galvanized, which is a very economical and effective anti-corrosion to bolt structure and prevent oxidation.

【2】螺栓：螺栓：由头部和螺杆（带有外螺纹的圆柱体）两部分组成的一类紧固件，需与螺母配合，用于紧固连接两个带有通孔的零件。 这种连接形式称螺栓连接。如把螺母从螺栓上旋下，又可以使这两个零件分开，故螺栓连接是属于可拆卸连接。其中六角头是更常用的，一般沉头用在要求连接的地方。

【2】 Bolt: Bolt: a kind of fastener composed of head and screw (cylinder with external thread), which needs to be matched with nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection belongs to removable connection. Hexagon head is the most commonly used, and generally countersunk head is used where connection is required.

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