0086-0532-83181976
No. 261, Ruihai Garden, Lingshanwei Town, Huangdao Dist., Qingdao, Shandong, China (Mainland)
DTH hammer down hole drilling tools rock drilling tools button bit drill dth bit dth hammer
| Serial Number | Failure Content | Causes of failure | Prevention or Solution |
| 1 | It fractures in the taper thread area of the top sub. | Drill pipe thread and the top sub thread do not match with each other | 1. Check if there is burr and flash on the drill pipe thread. File the burr and the flash down. 2. Check if the drill pipe and the top sub thread are well matched with each other before connecting them. 3. Check if the drill pipe and the top sub threead can be fit closely after they are connected. |
| 2 | The external cylinder cracks. | The external cylinder is worn out excessively when normally used, and after the normal use dimensiton is exceeded, it fractures normally. | Check the using worn condition of the external cylinder frequently, if the normal use dimension has been exceeded (Please see the specific statement in this manual), and replace the external cylinder decisively and accordingly. |
| Beaten by larger external force or grinded by machines. | It is forbidden to beat the external cylinder with strong external force, such as a sledge hammer,or to be grinded by machines. | ||
| Improper torque is forced to applied when it is disassembled or assembled. | When it is disassembled with a chain tongs,be sure to apply proper torque and use sharp chain tongs. | ||
| Welding is carried out on the external cylinder. | Welding on the external cylinder is forbidden. | ||
| 3 | Drive chuck fractures. | Applied torque and axial compression are much too large. | Reduce propulsion and cornering force. |
| The drive chuck is worn out excessively when normally used, and after the normal use dimensiton is exceeded, it fractures normally. | Check the using worn condition of the drive chuck frequently, if the normal use dimension has been exceeded (Please see the specific statement in this manual), and replace the drive chuck decisively and accordingly. |
QL DTH hammer
| Description | Thread connection | Outside diamete | Rec. hole size | Shank style | Working pressure | Length without bit, shoulder to shoulder | Weight without bit | |||||
| mm | inch | mm | inch | bar | psi | mm | inch | kg | lbs | |||
| 4" | ||||||||||||
| QL 340 STD | API 2 3/8 Reg Pin | 100 | 3 15/16 | 110-130 | 4 5/16 - 5 1/8 | DHD 340 | 6 - 25 | 87-363 | 994 | 39 1/8 | 49 | 108 |
| 5" | ||||||||||||
| QL 50 STD | API 3 1/2 Reg Pin | 117 | 4 5/8 | 130 - 152 | 5 1/8 - 6 | QL 50 | 6 - 24 | 87-350 | 1067 | 42 | 60 | 132 |
| QL 50 HF | API 3 1/2 Reg Pin | 117 | 4 5/8 | 130 - 152 | 5 1/8 - 6 | QL 50 | 6 - 24 | 87-350 | 1067 | 42 | 60 | 132 |
| QL 50 HC | API 3 1/2 Reg Pin | 117 | 4 5/8 | 130 - 152 | 5 1/8 - 6 | QL 50 | 6 - 24 | 87-350 | 1067 | 42 | 60 | 132 |
| QL 55 QM | API 3 1/2 Reg Pin | 124 | 4 7/8 | 134 - 152 | 5 1/4 - 6 | QL 50 | 6 - 24 | 87-350 | 1067 | 42 | 74 | 163 |
| 6" | ||||||||||||
| QL 60 STD | API 3 1/2 Reg Pin | 138 | 5 7/16 | 152 - 191 | 6 - 7 1/2 | QL 60 | 6 - 24 | 87-350 | 1132 | 44 9/16 | 91 | 20 |
| QL 60 HF | API 3 1/2 Reg Pin | 138 | 5 7/16 | 152 - 191 | 6 - 7 1/2 | QL 60 | 6 - 24 | 87-350 | 1132 | 44 9/16 | 91 | 201 |
| QL 60 HC | API 3 1/2 Reg Pin | 138 | 5 7/16 | 152 - 191 | 6 - 7 1/2 | QL 60 | 6 - 24 | 87-350 | 1132 | 44 9/16 | 91 | 201 |
| QL 65 QM | API 3 1/2 Reg Pin | 146 | 5 3/4 | 165 - 191 | 6 1/2 - 7 1/2 | QL 60 | 6 - 24 | 87-350 | 1132 | 44 9/16 | 111 | 245 |
| Aqua 60 | API 3 1/2 Reg Pin | 138 | 5 7/16 | 152 - 191 | 6 - 7 1/2 | QL 60 | 6 - 24 | 87-350 | 1132 | 44 9/16 | 91 | 201 |
| 8" | ||||||||||||
| QL 80 STD | API 4 1/2 Reg Pin | 181 | 7 1/8 | 200 - 305 | 7 7/8 - 12 | QL 80 | 6 - 24 | 87-350 | 1461 | 57 1/2 | 203 | 446 |
| QL 80 STD | 4 1/2 BECO Pin | 181 | 7 1/8 | 200 - 305 | 7 7/8 - 12 | QL 80 | 6 - 24 | 87-350 | 1461 | 57 1/2 | 203 | 446 |
| QL 80 HF | API 4 1/2 Reg Pin | 181 | 7 1/8 | 200 - 305 | 7 7/8 - 12 | QL 80 | 6 - 24 | 87-350 | 1461 | 57 1/2 | 203 | 446 |
| QL 80 HC | API 4 1/2 Reg Pin | 181 | 7 1/8 | 200 - 305 | 7 7/8 - 12 | QL 80 | 6 - 24 | 87-350 | 1478 | 58 3/16 | 203 | 446 |
| QL 85 QM | API 4 1/2 Reg Pin | 194 | 7 5/8 | 216 - 305 | 216 - 305 | QL 80 | 6 - 24 | 87-350 | 1461 | 57 1/2 | 250 | 551 |
| 12" | ||||||||||||
| QL 120 STD Slim | API 6 5/8 Reg Pin | 273 | 10 3/4 | 311 - 560 | 12 1/4 - 22 1/16 | QL 120 | 6 - 17 | 87-247 | 1837 | 72 5/16 | 571 | 1257 |
| QL 120 STD | API 6 5/8 Reg Pin | 285 | 11 1/4 | 311 - 560 | 12 1/4 - 22 1/16 | QL 120 | 6 - 17 | 87-247 | 1837 | 72 5/16 | 650 | 1433 |
| QL 120 STD BO | API 6 5/8 Reg Pin | 285 | 11 1/4 | 311 - 560 | 12 1/4 - 22 1/16 | QL 120 | 6 - 17 | 87-247 | 1837 | 72 5/16 | 650 | 1433 |
| QL 120 HC | API 6 5/8 Reg Pin | 285 | 11 1/4 | 311 - 560 | 12 1/4 - 22 1/16 | QL 120 | 6 - 17 | 87-247 | 1913 | 75 5/16 | 636 | 1402 |
| 20" | ||||||||||||
| QL 200 | API 8 5/8 Reg Pin | 396 | 15 9/16 | 440 - 660 | 17 15/16 - 26 | QL 200 | 6 - 17 | 87-247 | 1670 | 65 3/4 | 1172 | 2584 |
| QL 200 S | API 8 5/8 Reg Pin | 396 | 15 9/16 | 710 - 914 | 28 - 36 | QL 200 S | 6 - 17 | 87-247 | 1831 | 72 1/16 | 1356 | 2990 |
QLX and TD DTH hammer
| Description | Thread connection | Outside diamete | Rec. hole size | Shank style | Working pressure | Length without bit, shoulder to shoulder | Weight without bit | |||||
| mm | inch | mm | inch | bar | psi | mm | inch | kg | lbs | |||
| 3.5" | ||||||||||||
| QLX 35 | API 2 3/8 Reg Pin | 79 | 3 1/8 | 90-105 | 3 9/16 - 4 1/8 | DHD 3.5 | 6 - 30 | 87-432 | 799 | 31 7/16 | 30 | 66 |
| 4" | ||||||||||||
| QLX 40 | API 2 3/8 Reg Pin | 101,6 | 4 | 115 - 130 | 4 1/2 - 5 1/8 | TD 40 | 6 - 35 | 87-508 | 897 | 35 5/16 | 46 | 100 |
| 5" | ||||||||||||
| QLX 50 | API 3½ Reg Pin | 121,9 | 4 13/16 | 134 - 152 | 5 1/4 - 6 | QL 50 | 6 - 35 | 87-508 | 1061 | 41 3/4 | 69,5 | 153 |
| QLX 55 QM | API 3½ Reg Pin | 129 | 5 1/16 | 140 - 152 | 5 1/2 - 6 | QL 50 | 6 - 35 | 87-508 | 1061 | 41 3/4 | 80,9 | 178 |
| 6" | ||||||||||||
| QLX 60 | API 3½ Reg Pin | 142 | 5 9/16 | 152 - 191 | 6 - 7 1/2 | QL 60 | 6 - 35 | 87-508 | 1091 | 42 15/16 | 93,2 | 205 |
| QLX 65 QM | API 3½ Reg Pin | 149 | 5 7/8 | 165 - 191 | 6 1/2 - 7 1/2 | QL 60 | 6 - 35 | 87-508 | 1091 | 42 15/16 | 104,8 | 235 |
| QLX 60 OG | API 3½ Reg Pin | 142 | 5 9/16 | 156 - 165 | 6 1/4 - 6 1/2 | QL 60 | 6 - 35 | 87-508 | 1091 | 42 15/16 | 93,2 | 205 |
| 8" | ||||||||||||
| TD 80 STD | API 4½ Reg Pin | 181 | 7 1/8 | 200 - 305 | 7 7/8 - 12 | QL 80 | 6 - 24 | 87-350 | 1466 | 57 11/16 | 216 | 476 |
| TD 85 QM | API 4½ Reg Pin | 197 | 7 3/4 | 222 - 305 | 8 3/4 - 12 | QL 80 | 6 - 24 | 87-350 | 1410 | 55 1/2 | 239 | 527 |
| TD 90 STD | API 4½ Reg Pin | 197 | 7 3/4 | 222 - 305 | 8 3/4 - 12 | TD 90 | 6 - 24 | 87-350 | 1410 | 55 1/2 | 239 | 527 |
| TD 90 DH | API 4½ Reg Pin | 197 | 7 3/4 | 222 - 305 | 8 3/4 - 12 | TD 90 | 6 - 24 | 87-350 | 1410 | 55 1/2 | 239 | 527 |
COP DTH hammer
| Description | Thread connection | Outside diamete | Rec. hole size | Shank style | Working pressure | Length without bit, shoulder to shoulder | Weight without bit | |||||
| mm | inch | mm | inch | bar | psi | mm | inch | kg | lbs | |||
| 2" | ||||||||||||
| COP 20 | RD 50-6 Box | 62 | 2 7/16 | 70 - 96 | 2 3/4 - 3 3/4 | BR 2 | 6 - 12 | 87-175 | 810 | 31 7/8 | 13.5 | 29.8 |
| 3" | ||||||||||||
| COP 32 | API 2 3/8 Reg Pin | 77 | 3 1/16 | 85 - 100 | 3 3/8 - 3 15/16 | COP 32 | 6 - 12 | 87-175 | 925 | 37 7/16 | 23.0 | 50.7 |
| 3.5" | ||||||||||||
| COP 35 | API 2 3/8 Reg Pin | 79 | 3 1/8 | 88-105 | 3 7/16 - 4 1/8 | DHD 3.5 | 6 - 25 | 87-363 | 902 | 35 1/2 | 30 | 65 |
| 4" | ||||||||||||
| COP 44 STD | API 2 3/8 Reg Pin | 98 | 3 7/8 | 110-125 | 4 5/16 - 4 15/16 | DHD 340 | 6 - 25 | 87-363 | 1034 | 40 11/16 | 38,0 | 84.0 |
| COP 44 Gold | API 2 3/8 Reg Pin | 100 | 3 15/16 | 110-130 | 4 5/16 - 5 1/8 | TD 40 | 6 - 35 | 87-508 | 1037.5 | 40 7/8 | 40,5 | 89.3 |
| COP 44 Gold | API 2 7/8 Reg Pin | 100 | 3 15/16 | 110-130 | 4 5/16 - 5 1/8 | TD 40 | 6 - 35 | 87-508 | 1037.5 | 40 7/8 | 40,5 | 89.3 |
| COP 44 Gold | CUBEX #24 | 100 | 3 15/16 | 110-130 | 4 5/16 - 5 1/8 | TD 40 | 6 - 35 | 87-508 | 1037.5 | 40 7/8 | 40,5 | 89.3 |
| COP 44 Gold, guided casing | API 2 3/8 Reg Pin | 114 | 4 31/64 | 115 | 4 1/2 | TD 40 | 6 - 35 | 87-508 | 1037.5 | 40 7/8 | 45,0 | 99.2 |
| COP 44 Gold, guided casing and chuck | API 2 3/8 Reg Pin | 114 | 4 31/64 | 115 | 4 1/2 | TD 40 | 6 - 35 | 87-508 | 1037.5 | 40 7/8 | 45,3 | 100 |
| 5" | ||||||||||||
| COP 54 STD | API 2 3/8 Reg Pin | 120 | 4 3/4 | 134–152 | 5 1/4–6 | DHD 350 | 6 - 25 | 87-363 | 1145 | 45 1/16 | 57 | 126 |
| COP 54 STD | API 3½ Reg Pin | 120 | 4 3/4 | 134–152 | 5 1/4–6 | DHD 350 | 6 - 25 | 87-363 | 1145 | 45 1/16 | 57 | 126 |
| COP 54 QM | API 3½ Reg Pin | 126 | 4 15/16 | 134–152 | 5 1/4–6 | DHD 350 | 6 - 25 | 87-363 | 1145 | 45 1/16 | 57 | 148 |
| COP 54 Gold "Slim" | API 3½ Reg Pin | 115 | 4 1/2 | 127–152 | 5–6 | QL 50 | 6 - 30 | 87-435 | 1194 | 47 | 57 | 126 |
| COP 54 Gold | API 3½ Reg Pin | 120 | 4 3/4 | 134–152 | 5 1/4–6 | QL 50 | 6 - 30 | 87-435 | 1194 | 47 | 66 | 146 |
| COP 54 Gold QM | API 3½ Reg Pin | 126 | 4 15/16 | 140–152 | 5 1/2–6 | QL 50 | 6 - 30 | 87-435 | 1194 | 47 | 76 | 168 |
| 6" | ||||||||||||
| COP 64 STD | API 3½ Reg Pin | 142 | 5 9/16 | 156–178 | 6 1/8–7 | DHD 360 | 6 - 25 | 87-363 | 1308 | 51 1/2 | 95 | 209 |
| COP 64 QM | API 3½ Reg Pin | 146 | 5 3/4 | 165–178 | 6 1/2–7 | DHD 360 | 6 - 25 | 87-363 | 1308 | 51 1/2 | 109 | 240 |
| COP 64 Gold | API 3½ Reg Pin | 142 | 5 9/16 | 156–178 | 6 1/8–7 | QL 60 | 6 - 30 | 87-435 | 1258 | 49 1/2 | 96 | 212 |
| COP 64 Gold QM | API 3½ Reg Pin | 146 | 5 3/4 | 165–178 | 6 1/2–7 | QL 60 | 6 - 30 | 87-435 | 1258 | 49 1/2 | 109 | 240 |
about our Company and Products
Qingdao Worldrill Co., Ltd is one of the biggest enterprises in China specializing in research and manufacture of rock drilling products and pneumatic tools. It has a complete set of equipment for producing rock drilling products and pneumatic tools. (The key equipment is the most advanced one in the world). With its abundant experience in research and production, using the highest quality raw materials, through advanced technology and rigorous testing methods, our company has produced products with excellent performance and quality.
Our company mainly researches, designs and manufactures the following products: high pressure DTH hammers (which are the most advanced products in the field in China), all kinds of DTH bits, eccentric drilling tools for drilling with casing in the cover rocks and loose rocks, all kinds of threaded bits, RC reverse circulation hammers and bits, shank adaptors and coupling sleeves, various kinds of tool joints and drill pipes, and spare parts for drilling rigs, etc. The performance of these products is domestic leading and world first-class. The products have gained certificates including ISO 9001, API, SGS, CE, etc. “WORLDRILL” drilling tools own a good market all over China for the good quality and high performance. Meanwhile, the company is still actively exploring overseas market. “WORLDRILL” products have been exported to more than 50 countries including Australia, South Africa, UAE,Tanzania,Zambia,Korea,Nigeria,etc.
about our Product Technology and Advantages
“WORLDRILL”,manufacturing drilling tools, is a leading brand in China, and the DTH Hammers without foot-valve are the most popular products in particular. Compared with the DTH Hammers of the same specification with foot-valve, the advantages of DTH Hammers without foot-valve are as follows: 1. Higher impact frequency and faster drilling speed, with the speed being 15%-20% higher than the ones with foot-valve; 2. Lower air consumption and lower oil consumption, with 10% of the oil consumption saved; 3. Avoid the trouble of foot-valve fracture and expand when heated, or the contraction when cooled; 4. Fewer internal parts, simple in structure, long in service life, and easy to assemble and disassemble. The new type hammer has been well received by users since its launch. Hammering tests have been carried out on the hardest iron ore mine in China. Compared with the products from SANDVIK and ATLAS COPCO, the new type fast hammer produced by our company is about 10% faster in terms of speed. Besides, since the thickness of the external cylinder of the hammer from our company is increased, its service life is longer than others. As to bits, the quality of products provided by our company is comparable to those from the above mentioned two companies; in the meantime, the cost performance of drilling tools branded “WORLDRILL” is much higher than those branded SANDVIK and ATLAS COPCO.
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Within 10 days supplied from stock
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Sale Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
QINGDAO WORLDRILL CO., LTD
Contact: Mary
Phone:
Mobile:
Address: No. 261 Outlets in Southern District, Ruihai Garden, Lingshanwei Town,
Huangdao District, Qingdao City, Shandong Province, China, 266555
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