Changsha Tianhe Drilling Tools and Machinery Co.,Ltd. |
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Gold 20inch big DTH drilling tools with DTH hammer for foundation drilling
1,Structue for 20inch DTH hammer for foundation and water well drilling:
ITERM DESCRIPTION | ||||
NO | PART LIST | |||
1 | TOP SUB | 475230 | PRODUCT NAME | NUMA180 |
2 | STEEL PAD RING | 475030 | PRODUCT CODE | 475002 |
3 | O RING | 355*7 | BIT TYPE | NUMA180 WITH FOOT VALVE |
4 | CHECK VALVE | 475020 | THREAD CONNECTION | HEX |
5 | SRPING | 172*51*5*15 | WORKING PRESSURE (BAR) | 14-24 |
6 | ADJUSTING PAD | 475060 | AIR CONSUMPTION 24BAR (M3/MIN) | 78.8 |
7 | BELLEVILLE SPRING | 263*199.6*10.6 | RECONMENDED ROTATION SPEED | 30-40 |
8 | CHECK VALVE GUIDE | 475070-C | OUTSIDE DIA (MM) | 406 |
9 | FEED TUBE GUIDE | 475100 | LENGTH WITH OUT BITS | 2425 |
10 | O RING | 300*7 | WEIGHT | 1530 |
11 | PRESSURE BEARING WAHSER | 175*152*18.5 | NORMAL AXIAL PRESUURE (KN) | 25 |
12 | O RING | 132*5.3 | REC HOLE SIZE(MM) | 500-700 |
13 | FEED TUBE | 475120-C | ||
14 | PISTON | 475130 | ||
15 | OUTER CYLINDER | 475140 | ||
16 | CHUCK RING | 475150 | ||
17 | STEEL PAD RING | 475170 | ||
18 | CHUCK SLEEVE | 475160 |