Supply Jiangsu 108 with tube factory direct Jiangtai Limited is a manufacturer can produce hollow bolt processing a variety of types of hollow bolt grouting anchor pipe roof with duct quality, affordable, enthusiasm and look forward to your call eccentric reaming sleeve follow DTH Drilling and technical points a, eccentric reaming sleeve follow DTH drilling system to use: 1, eccentric reaming sleeve follow DTH Casing Drilling System follow rotary casing and casing can be divided in two types of non-rotating sleeve for rotational casing up to the turret drive sleeve rotation, while applying pressure to promote the casing axis rig up; non-rotating sleeve type Casing up through the inner casing shoe shoulder impingement sleeve, while applying pressure to promote the sleeve shaft rig up. 2. Before drilling, spot welding methods must be two elastic cylindrical shank end face of the pin hole welding live, to prevent pin loosening, the guide drill bits and reaming drill bit fall into the bottom of the hole. When replacing guide the drill bit, give to the pin hole dross solder tail end face removed, and then remove the spring pin, long pin, ball can be replaced. 3, eccentric reaming drill is coupled with good impact, impact drill pipe coupled with the good, turret drive rotary drill pipe, with a positive rotating reaming drill bit eccentric manner projecting in the hole drilling center hole and reaming around the casing at the same time follow-up after reaching the desired depth, the drill pipe and drill bit counter-rotating eccentric reaming, reaming drill bit to make revenue center position, out from the casing. If the bottom of the hole is consolidated layer or hard rock needs to continue drilling, it must replace the conventional DTH other appropriate diameter drill head, back into the hole to continue drilling consolidation layer, or hard rock. 4, after the consolidation layer, or hard rock drilling completed within the drill hole impactor proposed, the use of hydraulic puller raised the sleeve from the hole. Second, eccentric reaming sleeve follow DTH drilling system is suitable geological conditions: rock layer, cover layer drilling, in order to ensure stability after the drill hole wall with perforated casing up engineering, structural design is reasonable, high strength, and life is quite similar foreign products, especially for fault rock layers. Features: 1, when not properly into the hole, using the outer casing into the hole to finish the job Wall 2, 3 reaming and contraction is very flexible, high-pressure and low-pressure series type of impactor with your matching three, with tube common Size Tube OD (mm) Φ108, Φ127, Φ146, Φ168, Φ183, Φ219, Φ245, Φ273 with pipe, casing, casing reaming, with tube construction, tube manufacturers