Professional drill bit manufacturing
Blast furnace drill bits, drill rods, geological drilling tools, drilling equipment and various accessories, 38 seamless steel pipes, connecting sleeves, drill tails, shot pads and other semi-finished and finished products, as well as blast furnace hydraulic mud cannons, opening machines, rock drills, drilling machines, and other complete sets of equipment # drill bits # drill rods # drilling machines # rock drills # opening pads
المزيد
