With people's attention to the bathroom, bathroom cabinets that combine grooming, storage, and decorative functions have also received increasing attention. How can we choose a high quality, cheap, and easy to use bathroom cabinet?
 Rocca bathroom cabinet      Meike City bathroom cabinet  Â
Waterproof is the most important
Consumers should choose bathroom cabinets made of materials with better moisture resistance, and they are generally made of multi-layered solid wood panels. The surface of the bathroom cabinet is treated with multiple baking paints to ensure the sealing of the panel, so that the water vapor is minimized and the panel is in direct contact. Some bathroom cabinets are skinned and the style is good, but the veneer is easy to fall off, so that the plate will be damp and moldy.
Big difference in brand quality
The bathroom cabinets on the market today are of varying quality. When consumers purchase, they should remember to check the documents such as the certificate of conformity provided by the manufacturer. Of course, the safest method is to try to buy products of well-known brands. Not only is the quality guaranteed, but the post-service is also less worrying.
Health issues to pay attention
Poor quality bathroom cabinets are prone to health problems when used. For example, bathroom cabinets with poor moisture resistance are prone to mildew and bacteria; unqualified bathroom cabinets use excessive amounts of formaldehyde in their exterior surfaces and directly harm human health. In addition, there are many items in the bathroom that are close to the body and can easily endanger the health of the family if they are affected.
Style can not be ignored
The bathroom design style can not be ignored. For those who are new to the renovation, choosing a bathroom cabinet that matches the style of their own home can add to the quality of home furnishings.
Plate style renderings bathroom paint decoration design style decoration home decoration style bathroom design bathroom waterproof home improvement home decoration home
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).
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.
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