Steel king roll formed teardrop step beams.
Roll formed steel beams.
While it is flat the steel is processed through a punch that punches the holes which will later be used to attach the beams.
Us20120328898a1 roll formed steel beam google patents roll formed steel beam download pdf info publication number us20120328898a1.
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.
Roll form rack starts as a coil of steel.
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.
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.
Preferably the cold rolled steel beam is cold formed from a unitary piece of sheet steel.
Types of roll form.
Boltless assembly auto engaging safety clips resist beam disengagement and provide an audible click when secured.
Hence these sections are recently used as beams and joists in buildings.
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.
The result a 40 60 lighter beam with the strength of steel and the versatility of timber.