BKH | Home Formwork,Jump form,Concrete,Concrete placement,Pumping,Scaffold,Screens,Self climbing screens,Sydney formwork,Largest formwork contractor,High rise formwork,Tower placing booms,Climbing wall systems BKH Group is a specialist in formwork and concrete placements for the commercial, industrial, civil engineering, mining and residential sectors. Started in 1996 the company is now one of the major contracting firms operating throughout Australia in most capital cities and rural areas.