Types of roll form.
Roll formed steel beams.
Preferably the cold rolled steel beam is cold formed from a unitary piece of sheet steel.
Hence these sections are recently used as beams and joists in buildings.
However the vulnerability of aluminium in buckling due to low elastic modulus compared to steel and increased web slenderness of lcbs have raised the issues.
The result a 40 60 lighter beam with the strength of steel and the versatility of timber.
Roll formed beams can be installed slightly faster than structural beams plus there is nothing to forget or misplace as no bolts or loose parts are required.
Us20120328898a1 roll formed steel beam google patents roll formed steel beam download pdf info publication number us20120328898a1.
Boxspan is a roll formed beam manufactured from two c shaped sections of high tensile zinc coated steel mechanically locked together with a patented process.
Roll form rack starts as a coil of steel.
Roll formed beam pin connectors and safety locking mechanism provides an automatic engagement when the beam drops firmly into place on the roll formed upright column.
After the steel has been punched the steel is sent through rollers which shape the steel and give it the shape it requires for strength.
Boltless assembly auto engaging safety clips resist beam disengagement and provide an audible click when secured.
Teardrop step beams have teardrop and rivet design with heavy duty connection plates that allow easy installation and greater connection integrity.