A hook on the outer plate stripline strengthening plate is a fin cut from the plate surface of the outer plate stripline strengthening plate and bent in the end part to form the hoot.

• 外板带线加强板上的挂钩是通过在外板带线加强板的板面上切割出肋片，再将所述肋片的端部折弯，形成挂钩；