For Threaded Rod, only light Arbors Rod, Drill Rod, MF Rod Requires Blacksmithing, but just upsetting both ends (Drill and drill rod end MF Rod wrought only). Forged Threaded Rod must choose a large horizontal force upsetting upsetting machine. Forging heating, preferably frequency heating. The heating temperature control is very important hexagonal hollow steel, low life or the life of many reasons for fluctuations threaded drill rod, to a large extent by forging. Forging process, the operator often consciously or unconsciously some heavy forging heating temperature of hollow steel drill rods, which can increase the high-temperature plasticity forgings, forging a more full of rough, especially on small tonnage forging brazing machine forging, higher heating temperature of hollow steel, so that in most cases, forging overheating even burnt state. Such shape forging process, although very good, but a "U-turn" phenomenon in the subsequent machining or handling. Because such tissue state after the process is difficult to eliminate, can not withstand the stress of high-frequency action fail prematurely. Threaded Rod after forging or hot forging state without hollow steel billet (ie threaded parts) to be annealed to eliminate forging heating or hot-rolled state organizations affected. Before machining, machining parts to partial softening annealing. Abroad using slit-type annealing furnace to complete, most of the domestic manufacturers to adopt a box furnace annealing or IF. But IF annealing ineffective, often heated box furnace annealing segment is too long, too long, failed to carry out the heating portion of the final heat treatment and affect the life of the drill rod, and this problem has not been caused by the manufacturer's attention. B22 rock drill and drill out the screw connection within M16 * 2 or side teeth, length of 0.4 to 2.8 m. Anchor drill pipe length of 1 m / roots rock hollow steel drill rod, users need other specifications can be customized. Technical Specifications Model B22 B22 drill pipe thread connection specifications M14 * 2 M16 * 2 length 0.4-2.8 B22 air drill made of high quality hollow hexagonal, made of 55SiMnMoV, tail supporting various hydraulic bolt rig, the head can be connected within and outside buckle various bits. Anchor bolt drill pipe connections connected sets, B22 anchor drill pipe bending and strong, durable, easy disassembly, easy to operate, can also be designed according to user requirements for processing drill anchor connected sets. Hydraulic Rod hollow steel, hollow steel, Shandong Drilling Co., Ltd. Peng Rui Peng Rui provided by Shandong Drilling Technology Limited. Drilling Ltd. Shandong Peng Rui (www.zbpengrui.com) strong, credible, Shandong Zibo metal cutting and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Drilling Ltd. Shandong Peng Rui and you hand into the brilliant, for a better future!