Impregnated diamond core bit manufacturer
  0086-731-84077805    

FAQ

1: What are our payment options?
For sample / small order, it is 100% in advance
For mass production, it is 30% in advance and 70% balance against the copy of shipping documents
You can pay us via: Western Union / TT. Bank Transfer / MoneyGram
 
2: How to ship the products?
You can choose:
Express Air Courier: UPS, FedEx, DHL, EMS, TNT, ARAMEX
Air Mail: China Post, Hongkong Post, Singapore Post
Bulk Air Freight
Sea Freight
Ex-Works - appoint your own freight forwarder to collect the goods from our warehouse.
 
3: How much does shipping cost?
It depends on the quantity of goods, the shipping method, and the country. we will provide a big discount price in view of our long-term group cooperation with many forwarders.
 
4: How long will take to ship order?
As long as there is stock available, we usually ship goods / sample within 3 working days
If we produce according to customers’ request, the lead time will be confirmed before you make the order.
 
5: How to place an order?
You can leave us a message or send us email to tell me what products and how many you need. we will send back a PI accordingly. You can follow the PI to pay us. Then the products will be in preparation. After getting the payment, the items will be sent out ASAP.
 
6: Quality Guarantee
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
 
 

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