Active Member
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[China]
Address: Room9-616, No. 10 Zhenxing Road (MDW Plaza), Changping District, 102200 Beijing, China
Contact name:Mr. Yingkai Zhang
KSQ Technologies (Beijing) Co. Ltd |
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DTH Water Well Oil Drill Pipe Heavy Weight Drill Pipe Drilling Tools
DTH drill pipes are widely used in mining,water well drilling,geothermal,oil and all kinds of DTH rock drilling,with high quality low carbon steel to ensure good resistance to strengthen and tensile,friction welded to ensure the adapter and pipe connect tightly as a whole set the cyclic extrusion-compression ensure reliable pipe
In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.
Specification of DTH Drill pip
| Diameter | Length | Connection Thread | Wall Thickness | |||
| mm | inch | mm | Foot | mm | inch | |
| 60 | 2.375 | 1,000~4,500 | 3 3/8 ~ 14 3/4 | T42×10×2 | 5~8 | 13/64~5/16 |
| 76 | 3 | 1,000~4,500 | 3 3/8 ~ 14 3/4 | 2 3/8” API REG | 5~8 | 13/64~5/16 |
| 89 | 3.5 | 1,000~7,620 | 3 3/8 ~ 25 | 2 3/8” API REG/IF | 5~12 | 13/64~15/32 |
| 102 | 4 | 1,000~9140 | 3 3/8 ~ 30 | 2 3/8” API REG, 2 7/8” API IF, 3 1/2” API REG | 6.5~20 | 1/4~25/32 |
| 108 | 4.25 | 1,000~9140 | 3 3/8 ~ 30 | 2 3/8” API REG, 2 7/8” API IF, 3 1/2” API REG | 6.5~20 | 1/4~25/32 |
| 114 | 4.5 | 1,000~10,670 | 3 3/8 ~ 35 | 2 7/8” API IF, 3 1/2” API REG | 6.5~20 | 1/4~25/32 |
| 127 | 5 | 1,000~10,670 | 3 3/8 ~ 35 | 3 1/2” API REG | 8~20 | 5/16~25/32 |
| 133 | 5.25 | 1,000~10,670 | 3 3/8 ~ 35 | 3 1/2” API REG | 8~20 | 5/16~25/32 |
| 140 | 5.5 | 1,000~10,670 | 3 3/8 ~ 35 | 3 1/2” API REG | 10~22 | 25/64~7/8 |
| 146 | 5.75 | 1,000~10,670 | 3 3/8 ~ 35 | 3 1/2” API REG | 10~22 | 25/64~7/8 |
| 152 | 6 | 1,000~10,670 | 3 3/8 ~ 35 | 4 1/2” API REG | 10~22 | 25/64~7/8 |
Sub Adapter
| Type | Diameter | Length | Connection Thread | ||
| mm | inch | mm | inch | API REG/IF | |
| Pin to Box | 59~146 | 2 3/8 ~ 5 3/4 | 120~235 | 4 23/32 ~ 9 1/4 | 2 3/8”, 2 7/8”, 3 1/2”, 4 1/2” |
| Pin to Pin | 90~115 | 3 1/2 ~ 4 1/2 | 70~97 | 2 3/4 ~ 3 5/8 | 2 3/8” , 2 7/8”, 3 1/2” |
| Box to Box | 77~205 | 3 ~ 8 1/8 | 200~270 | 7 7/8 ~ 10 5/8 | 2 3/8”, 2 7/8”, 3 1/2”, 4 1/2”, 6 5/8” |
