The wooden folding chair is sturdy and stable, durable and natural. I believe many of my friends can't wait to have a wooden folding chair of their own. So, what is the latest wooden folding chair? Before the chair, let's take a look at the approximate price of the wooden folding chair with the Xiaojiaju. Wooden folding chair price Wooden folding chair After a leisurely afternoon, the wooden folding lounge chair is unfolded, placed in the courtyard, lying on the sun, sleeping for a nap, allowing people to relax and rest, but a rare enjoyment. The price of a wooden deck chair is between $300 and $700. Wooden folding chair seat The wooden folding seat sits on the stable and comfortable, and can be rested outdoors. It is very convenient. It is generally used in conjunction with a folding table. It is also suitable for playing tea in the yard and playing it as a dining table. The price of a wooden folding seat is between $100 and $200. Wooden folding chair The wooden folding stool is small and light, and can be carried with you. If you are tired, you can take a rest, convenient and practical. The price of a wooden folding stool is between $20 and $150. The above is the relevant introduction to the price of wooden folding chairs, for your reference only, I hope you like it. For more information, please stay tuned for the tracking report of Xiaojiaju.com. With the continuous development of drilling production, the use conditions of drilling rigs have become more and more diversified, and various types of drilling rigs have appeared accordingly. Factors affecting the type and composition of drilling rigs include drilling method, drilling depth, borehole size and drilling tool size, and drilling area conditions (such as electricity or fuel, transportation, and meteorological conditions). Oil Drilling Rigs,Mine Drilling Rigs,Water Well Drilling Rigs,Exploration Drilling Rigs Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaoumachinery.com
1. According to drilling method
(1) Impact drilling rigs, such as wire rope impact drilling rigs (drilling rigs), vibration drilling rigs, etc.
(2) Rotary drilling rigs, such as those used in rotary drilling.
(3) Downhole power drilling tools, such as rotary drilling tools, turbo drilling tools, screw drilling tools, electric drilling tools, etc.
2. Divided by drilling depth
(1) Ultra-deep well drilling rig. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of more than 7000 meters, and a maximum hook load of more than 4,500 kN.
(2) Deep well drilling rig. The drill rod is 114 mm in diameter, the nominal drilling depth is 4000-7000 meters or more, and the maximum hook load is 2250-4500 kN or more.
(3) Drilling rigs for medium and deep wells. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of 1500-4000 meters or more, and a maximum hook load of 900-2250 kN or more.
Three, according to power equipment
(1) Diesel Engine-driven drilling rigs, which use diesel engines as power through mechanical transmission or hydraulic transmission.
(2) AC driven drilling rig, suitable for use in oil fields with industrial power grids.
(3) The drilling rig is driven by direct current, and the working unit is driven by a direct current motor.
Fourth, according to the driving mode
(1) Drive alone. Each working machine is driven by generators of different sizes, which are mostly used for electric drive. The transmission is simple and easy to install, but the power utilization rate is low and the total equipment mass is large.
(2) Unified drive. The three working units of drawworks, drilling Pump and turntable are driven by the same power unit. Most drilling rigs use this scheme. The unified drive can also include only one drilling pump, and the other drilling pump is driven separately. The unified drive drilling rig has high power utilization and can be adjusted mutually when the engine fails, but the transmission is complicated, installation and adjustment are troublesome, and the transmission efficiency is low.
(3) Group drive. The combination of power is between individual drive and unified drive. There are two options for three working machines. The power utilization rate of this kind of drilling rig is higher than that of a single drive, and the transmission ratio is simple to drive in a unified manner. Two sets of working machines can also be installed on different heights and scattered sites.