... to 15M. The main products are deep hole boring machine (T2120, T2125, T2135, T2180, T21100), deep hole boring machine (T2225, T2235, T2250, ... development in 2008, my company's newly developed deep-hole boring car (TB2280H series), the machine can simultaneously turning ... user's cost, the main tool deep hole drills, deep hole boring head, rolling head , boring head roll combination, nesting hole drills, ...