There are several forms:

(1)Hidden framing glass curtain wall: The bezel is fixed component consisting of aluminum sash. That is to say, the upper frame hangs on the beam aluminum frame grid system, and the remaining three sides are fixed on vertical rods and beams in the sash.

(2) Semi-frame glass curtain wall: There are vertical hidden and horizontal hidden glass curtain wall. The former is just aluminum vertical rod hidden behind glass. The glass was placed in glass mosaic tank of bar. Outside the tank, there is an aluminum plate on the glass. The latter is fixed by glass mosaic tank vertically and structural adhesive horizontally.

(3) Visible frame glass curtain wall: There will be vertical horizontal aluminum alloy frame on the whole curtain wall using structural steel as skeleton or aluminium alloy sections as bezel and skeleton.

(4) Bolted glass curtain wall: Four stainless steel pendant and stud welding are using in it. Each angle of pendant is connected to a hole of a piece of glass, that is to say, two pendants are connected to four pieces of glass.

(5) Frameless glass curtain wall: Also known as the structural glass. Glass is hang up by hook or special profile. Hook or special profiles are fixed on channel steel main frame and channel suspended on or underneath the beam board. Meanwhile, there are braced frame and support rail at the top and bottom to strengthen rigidity of glass wall. This kind of curtain wall is usually used for building on the first floor, like french window.