What is meaning of steel vabrication ??

dear sir  if you mean fabrication of steel then its meaning cutting, bending, and assembling processes of steel 

Steel fabrication. "vabrication" is a typo.

Any industrial process that deals with modifying steel into a product for use or commercialization.

For example bolting and welding steel beams to make a building's inner structure. Also stamping and welding metal sheets to make the chassis of a car. Welding a gate for a house or a factory.