Hole hole saw (hole saw) as walking beam pumping units  he serrated material classification: the bimetal hole saw, carbide hole saw, diamond hole saw,, tungsten carbide hole saw, different materials for cutting materials is not the same, the most common is Downhole Stabilizers double metal hole, we recommend the use of a harder metal material carbide hole saw, glass, carbon fiber, ceramics and other pieces of fissile material recommended diamond hole saw.

Hole is also known as hole saw or Drill Pipe in stock  hole saws, modern industrial or engineering refers to the processing of a circular hole cutting class Special saws, hole with different pore sizes and specifications according to the circle of different sizes, but also with at different depths of the openings, we divided into standard openings and deep carrier-type hole saw two,drilling crossover subs  it installed in the hand drill, impact drill, radial drill and other power tools, simple and flexible, easy to carry , safe, and versatile.

Practices
1, the opening piece in front of the opening, the first hole with a flashlight hit Approach of 11.5mm.
2, the piston rod, screwed into Casing and tubing manufacturersa threaded hole in the piston cylinder and piston rod gasket set into another set into the die. A piston rod inserted into the hole and then approaches the workpiece, the final screwed into the punch, so that the knife-edge and the machined surface closely punch, punch, the workpiece, the die three reliable fixed.
3, in a forward direction in the needle shut cutting back oil, then repeatedly press the press urging the handle Premium Connection Coupling so that the piston pump starts working on the hydraulic length, increasing shear forces between the convex mold, die cut holes in the workpiece until the cut pass so far.
4. Loosen the oil return by cutting, the hydraulic uninstall all. After the case of the four-step procedures to complete the hole operations.
5. Remove the punch, remove the die plate in the hair, Kai net open mold.

Applications "pressurized pipeline opening" on construction,Sucker rods with molded guide the first line in charge of welding flange mounted on the valve. "Pressure pipeline HOLE" is mounted on the valve, through the opening in the competent punch line.
After the punch, close the valve, remove "pressurized pipeline hole saw," Wang line 45 wells by bolting to the valve can be. The whole process without spillage, less than ten minutes.
The invention as compared with conventional construction methods is to install a multi-valve, pipeline welding to Sucker rod pump unit controller change the past, did not affect the production rate and yield when a single well, providing for the oil and gas pipeline risk management, incident handling, environmental pollution control in the new technology options.

Used opening, we have to clean up, first Downhole Drilling Stabilizers manufacturers of all we want to control the entire hole disassembled, clean the inside, the inside left of litter cleaned, and then Casing and tubing manufacturers the hole is installed, after installation is complete wipe clean the surface after the hole is placed in an environment suitable for storage. After the cutter is mounted on the known drill hole can be cut in any arbitrary surface plane Spherical Casing and tubing collar Gas tight connection copper, iron, stainless steel, glass and other sheet. Flexible, convenient and secure.

AISI4145H steel drill Non magnetic drill collar collar is a high strength, high hardness, resistance to twisting, bending, anti-wear special alloy steel, mainly for the G105,S135 drill pipe manufacturers manufacturing 1000-3000 meters deep underground working oil pump tubing outer sleeve in the domestic oil and gas industry are widely used. Since AISI4145H steel drill collars belonging to high-tech products with high added value, and with the continuous development of China's oil API Spec 5CT oil tubing pup joint in stock and gas industry, the market demand for larger, major steel companies are competing to seize the market, product competition is more intense.

Oil drilling Yan steel, do HWDP overall L8013Cr Pup joint manufacturers HWDP raw steel is AISI 4145H alloy steel, the production process strictly enforce the SY / T5146-1997 standard, heavy weight drill pipe is a medium-weight, similar to drill drill rod, drill pipe wall thickness than the large than small drill collars, drill pipe J55,N80,C95,T95,P110 Casing and tubing in stock connected to a particular extension connector on its thick-walled tube, usually in the composition of the drill string is applied between the drill pipe and drill collars, prevent sudden changes in cross-section of the drill string, the drill pipe to reduce fatigue. Use in directional wells, high-speed drilling with lower torque, reducing wear and Oil Country Tubular Goods(OCTG) Pup joint tear of the drill string, due to its steel drill collars than small, and wall contact area is small, not easily formed pressure card diamond.

Hydraulic opening device is simple, effort, speed,Spray metal sucker rod coupling processing surface smooth and clean, but also from the site, the position limits can be used, safe and reliable. Hydraulic opening device structure lightweight, attractive, and easy to carry, for the metallurgical, oil, chemicals, electronics, electrical appliances, shipbuilding, machinery and other industries pipeline API 7-1 Spec installation and maintenance of wires, lights, instrumentation switches and other openings, more suitable for the shaped instrument panel floor and wall openings of the switch box with a sub-line electrical box.