Active Member
9 Years
Changsha Drilling Machinery CO., LTD
Changsha Drilling Machinery CO., LTD
Manufacturer from China
Changsha Drilling Machinery CO., LTD
Changsha Drilling Machinery CO., LTD
Our company pays attention to product quality and abides to credit, and also does the best to provide the quality products and excellent service to customer. To build good after-sale service system, we draw up the quality guarantee according to the industrial standards combining field experience
|
Products |
Problem |
Settlement |
|
Diamond core bit |
1: size or technical parameters (matrix etc.) are different from the requirement of customers’ order |
Replace |
|
2: thread can not fit customers’ barrel |
Repair or replace |
|
|
3: break down a piece from matrix, and the volume of the piece exceed 2mm*2mm*2mm, and such break is not caused by drilling |
Replace |
|
|
4: matrix falling not caused by drilling |
Replace or return |
|
|
5: groove on matrix caused by manufacturer |
Replace or return |
|
|
6: drilling speed is obvious slower than congener products cause by manufacturer |
Replace, and each item quantity does not exceed 3 pieces |
|
|
7: bit life is obvious short cause by manufacturer |
||
|
8: breaking down of matrix, falling matrix, groove and short bit life caused by operating reasons- drill rod sticking, premature failure of the bit crown and hole bottom not to be cleaned |
Be excluded from quality guarantee |
|
|
9: short bit life or no penetration caused by drilling machine, drilling techniques or parameters |
||
|
10: properly worn and the matrix is finished |
||
|
11: thread damaged or distorted due to improper operation |
||
|
12: Steel body cracked in drill |
||
|
Reaming shell |
1: thread is not correct |
Repair or return |
|
2: steel body cracked in drill |
Repair or return |
|
|
3: PCD strips falling |
Repair or return |
Note: if there are any other problems not contained in the above table, the settlement will be based on the negotiation
