The cold-rolled ribbed steel bar machine is an energy-saving building material equipment imported from Europe in the 1980s and has played an important role in China's urban construction and production. It has saved a lot of steel and has achieved important economic benefits. The European cold-rolled ribbed steel bar machine Most of them adopt active rolling, which was reformed after being introduced in China. Cold rolled ribbed steel machines are mostly driven by passive rolling. Later, after exporting cold rolled ribbed steel machines to European post-European countries, they were surprised to find that the Chinese products were inconceivable. Because they never thought the Chinese were so smart.