The first is quality. To make the wooden door durable and not deformed, it is necessary to select the solid wood keel that has been strictly dried (the required moisture content of wood in Beijing is 10%). The internal filler structure is reasonable and conforms to the principle of mechanical stress cancellation to ensure its Under the influence of the surrounding environment and climate, the appearance deformation is within the prescribed range, and the state has three criteria for appearance indicators: advanced, intermediate and general. Good quality wooden doors should be formed by hot pressing process, solid edge banding machine mechanical sealing, sanding machine smoothing sanding to ensure its flatness, firmness and aesthetics. In addition, it is guaranteed to use high-quality wood, medium-density board, paint and adhesive glue that meet the requirements of environmental protection to meet the environmental protection requirements of decoration.
Secondly, the price, because of the factors affecting the price of materials, paint, labor, processing technology, corporate profits, etc., so the price of wooden doors in the market is also very large, from 800 yuan / set - 3000 yuan / set or so Wait. As the saying goes, "One point for one price" is very appropriate in the purchase of wooden doors. Because the processing technology of wooden doors is not very high, competition often only works hard from materials, labor, and paint. There must be a difference in quality. Therefore, the quality of wooden doors with higher prices is still guaranteed. It is difficult to say that the price is low. It depends on how consumers have identified it.
Thirdly, the style of the wooden door will affect the decoration effect in the future, so it is also very concerned by consumers. At present, the most complete style on the market is the wooden door of the "Spring" brand. The style of the wooden door of thousands of models is definitely the most in China. And the style is comprehensive and unique. Consumers may wish to take a look at the specialty stores in the market when purchasing wooden doors, as a reference for style selection.
Finally, the wooden door service problem that consumers are most concerned about, because many construction processes can only be carried out after the installation of the wooden door cover is completed, so can the manufacturer supply it in time? Is the quality of the installation qualified? How is the firmness? Is the appearance of the product satisfactory? Is there any quality problems such as cracking and deformation? These are the thorny problems that plague consumers. Therefore, when selecting wooden doors, we must conduct a good investigation of the comprehensive service capabilities of the manufacturers to avoid the above problems and delay the renovation of the project. Progress, causing unnecessary economic losses.
In the process of selecting interior wooden doors, spring wooden doors can meet the needs of consumers' professional choices. Spring wooden doors pursue the spirit of "excellent quality, service at home"! Help consumers to buy a comprehensive and practical brand! Bring high-quality and high-grade wooden doors to every family who pursues a better life!
Hejian Deris Both manufacturer and distributor, specialize on Drilling Tools include Tricone Bit breaker ,Pdc Bit Breaker , PDC Cutters , Cross-over Sub , tricone bit nozzles, PDC Bit nozzles,Tri Hawk Drill Bit
Optimal test method for drilling parameters:
1. Drill for 5 minutes with initially selected proper WOB and moderate RPM (60~100r/min) and record the ROP (as shown in the table below).
2. Moderately inctease WOB and keep the same RPM and drill under this WOB for 5 minutes and again record the RPO (as shown in the table below).
3. Decrease WOB b the same extent and tepeat step 2.
4. Find the WOB in the tow groups of test than can yield highest ROP.
5. Properly change RPM under optimal WOB and record the ROP (as shown in the table below).
6. Select the RPM at the highest ROP.
7. Set the drilling parameter at the best combination:60KN RPM: 120r/min
Times
RPM:100r/min
WOB:60KN
WOB
(KN)
Drilling hour
(Min/m)
RPM
(r/min)
Drilling hour
(Min/m)
1
80
8
100
7
2
100
9
120
5.5
3
60
7
80
8
Select
60
7
120
5.5
Drilling Tools
Drilling Tools,Trenchless Drill Tools,PDCdc Drill Bit Nozzle,Oil Drilling Head
Hejian Deris Petroleum Drilling Equipment Co.,Ltd. , http://www.welldrillingbit.com