In fact, it is not a joy,but a Interlocking Kelly Bar .
So why it is regarded as a joy?
Because its details are even more delicate than a joy.
Stairly key, organization transmission, the outside key is made by highly wear -risisting tempering steel
Main application:Soft formations, (week)weathered rock,hard strata construction
From its appearence, we can find it worthwhile to use.
Outer Dia (mm)
Sections
Retracted lenth (m)
Max. depth (m)
305
3 or 4
5.75-10.5
12-36
343
3 or 4
7.3-14.15
15-48
355
4
6-13
18-43
368
3 or 4
8.4-15.4
18-52
377
4
11-15
40-48
394
3 or 4
9.7-18.7
21-64
406
4
8.5-16.5
29-62
419
3 or 4
10.7-19.7
24-68
440
2 or 4
13-15
18-65
470
3 or 4
10.7-19.25
24-64
483
4
10.5-16.5
25-53
508
4
7.5-14.5
32-75
559
3 or 4
13.75-21.75
30-72
main products
Our Services
---OEM or customized products
---Track the production
--- Arrange for inspection if needed
---Take photos before delivery
---Arrange for customs clearance
---Track the shipment
---Send related files to customers
---Track quality problems if any
---Collect suggestions from customers
Company Information
Established in 2008, Xiangtan Zhongwei Heavy Industry Co., Ltd. is an advanced technological company that specializes in the R&D, manufacturing and sales of various drilling tools, attachments and spare parts.
With a group of engineers and skilled workers with years of experience in engineering and construction design, our products are widely recognized and trusted by users. In the domestic market, we are the main supplier for SANY, XCMG, ZOOMLION, YUTONG, SUNWARD, FOTON and OSAINT. In addition, our products are widely exported to US,Turkey, Mexico, Russia, Canada, the Middle East, Africa,etc.
FAQ
1. Are you a manufacturer?
Yes, we are a professional drilling rig parts manufacturer.
2. How do you control the quality of your products?
First, we use good raw material;
Second, we have strict quality controlling system;
Third, we promise good quality and after-sales service.
3. Can you produce according to special requirement?
Yes, we produce customized products.
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