www.weldaprime.com - The WeldaPrime project aim was to develop a primer which is zinc-free, has low organic content, and can be applied as a thin coating to provide weld-through capability without affecting weld quality and yet providing adequate corrosion protection. of 200 000. B-PROF will seek to address this issue by introducing an alternative system of certification that will allow workers with extensive unrecognized experience in welding to be reintroduced into the sector as fully qualified welders, with their qualifications updated and properly recognized.