Hydraulic Engineering Percussion Drilling Rig
Percussion drilling is a manual drilling technique in which a heavy cutting or hammering bit attached to a rope or cable is lowered in the open hole or inside a temporary casing. The technique is often also referred to as 'Cable tool'. Usually a tripod is used to support the tools. By moving the rope or cable up and down, the cutting or hammering bit loosens the soil or consolidated rock in the borehole, which is then extracted later by using a bailer. Just as with hand augering, a temporary casing of steel or plastic may be used to prevent the hole from collapsing. When the permanent well screen and casing are installed, this temporary casing has to be removed.
The percussion borehole drilling rig's technical advantages:
- Unlike any other drilling method, percussion can remove boulders and break harder formations, effectively and quickly through most types of earth. Hydraulic Engineering Percussion Rig,Big Cable Percussion Drilling Rig,Large Diameter Construction Percussion Rig Henan YK Prospecting Machinery Co., Ltd , https://www.yyundergrounddrillingrig.com
Non-asbestos Sheet Typical Application
1.Suitable for water, high temperature steam, compressed air, joint part of tubing, valve, heat exchanger, etc.
2.Can be used in food and medicine industrial.
Non-Asbestos Sheet Prime Features
1.100% not including asbestos
2. Wide range of temperatures
Non-Asbestos Sheet Color:
Black, black with white, blue, green with white, etc. It can be produced following your requirements.
Available with steel, copper, SS etc. Mesh insertion (B101**M)
with anti-stick (B101**S), Graphite coating (B101**G)
Can put your logo on.
Dimensions:
Thickness: 0.4~5.0mm; 2000x1500mm; 1500x4000mm; 1500x1500mm; 1350x1350mm; 1000x1500mm; 1270x1270mm; 3810x1270mm
Oil-resisting mineral fiber Rubber Sheets Physical Property GB/T539-1995
Oil-resis-
tanceItem
NY400
NY250
NY150
NY300
Aviation
Oil-resisting and Metal Strengthening
(Enterprise Standard)Oil-resisting and Metal Strengthening (Enterprise Standard)
With the temperature
of 150±2°C,
dipped in No.20 aviation luricatintÂ
oil for 5h,then taken out and laid for 5min.Horizontal Strain MPa≥
26.0
9.0
8.0
10.8
13
15
Oil Absorptivily≤
9
23
23
23
20
20
Thickness-increasing%≤
15
20
Â
15
15
15
Change of Outlook
No Bubble
With the temperatureÂ
of 15-30°C,
dipped in NO.75 aviation gasolineÂ
for 5h,then taken outÂ
and laidÂ
for 5min.Horizontal Strain MPa≥
14.7
7.0
6.0
7.9
8.5
10
Oil Absorptivity≤
15
22
22
22
18
18
Thickness-increasing%≤
20
25
Â
25
23
23
Softness
No Crack
Â
Softness
No Crack
Â
DensityÂ
g/cm2
1.6-2.0
Compressibility %
12±5
Elasticity≥
50
45
35
45
45
45
Oil-sealing
Temperature:
15-30°C Medium:
NO.75Â
aviationÂ
gasoline orÂ
NO.3 jet fuel.Pressure:
12MPaPressure:
10MPaPressure:
8MPaPressure:
15MPaPressure:
15MPaPressure:
15MPaFully Sealed
Corrosiviness
Hard aluminium plate,low carbon steel
No Corrosion
Horizontal Strain MPa≥
Â
11.0
9.0
12.7
Â
Â
Stress-relaxation %≤
45
Â
Â
Â
Â
More information of Non-asbetsos sheet/gaskets,please contact with sunwell seals,thanks.
- Percussion drilling can in principle deal with most ground conditions.
- Can drill hundreds of feet (one well hand-drilled in China in 1923 was over 4000 feet deep).
- Can drill further into the water table than dug wells, even drilling past one water table to reach another.
Model NO.: SUNWELL B101
Style: Mechanical Seal
Product Name: Non-Asbestos Sheets, 100%Asbestosfiber Free
Shape (for Gasket): Sheet
Function: Rotary Sealing
Application: Flange Seal
Certificate: Dnv ISO9001,SGS
Trademark: Sunwell
Transport Package: Wooden Case
Specification: according your request
Origin: Ningbo
Non asbestos sheet is made from kevlar fiber, natural rubber, aramid fiber, filling materials and dye. Compressed and calendered under high temperature and pressure into a sheet form. It eliminates asbestos rubber sheet essentially and thoroughly.