Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
To survive with high quality,to develop with non-stop innovation,to repute with thoughtful service,to brand with great sincerity
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254mm Diameter Button DTH Drill Bit High Air Pressure Good Penetration Rates
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Only 2 or 3 days if we have stock on your request size.
Based on order quantity, normally it takes 15 days for production.
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 Services:
(1). Our sales team will response for your question within 24 hours (Holidays Excluded)
(2). Technical Support will be available in any time
(3). Free replacement will provide once the failure confirmed caused by our product quality
