Sr32-51mm Retrac Threaded Construction Drilling Button Bits for Drifting and Tunneling Drilling

Drifting and tunnelling tools include rods, shank adapters, couplings and bits. We have mainly 7 threads: R25, R28,SR28,R32,SR35, and R35. Diameter: 38-127mm,They can be used with button bits, cross bits and reaming products.

(1)Thread: R22, R25, SR25,R28, SR28, R32,SR32, R35

 

(2)Diameter: 38-127mm.

 

(3)Package: in wooden case or in carton.

 

(4)Productivity: 10000pcs/ month

 

Button bit	Carbide dimension				Dimensions D		Flushing hole
	Gauge		Front
	[No.]	[mm]	[No.]	[mm]	[mm]	[in]	Front	Side
	5	9	2	9	41	1 5/8"	1	1
	5	9.5	2	8	43	1 11/16"	1	1
	5	9.5	2	9	43	1 11/16"	1	1
	5	10	2	9	45	1 3/4"	1	1
	5	11	2	9	48	1 7/8"	1	2
	5	11	2	10	51	2"	1	1
	6	8	2	8	41	1 5/8"	2	0
	6	8	2	8	41	1 5/8"	2	1
	6	8	2	8	43	1 11/16"	2	0
	6	9	2	9	45	1 3/4"	2	0
	6	9.5	2	9.5	48	1 7/8"	2	0
	6	11	2	9	51	2"	2	0
	6	9	3	7	43	1 11/16"	3	1
	6	9	3	8	45	1 3/4"	3	1
	6	10	3	8	45	1 3/4"	3	1
	6	9	3	9	48	1 7/8"	3	1
	6	10	3	8	48	1 7/8"	3	1
	6	11	3	9	51	2"	3	1
	6	10	3	9.5	54	2 1/8"	3	1
	6	10	3	10	57	2 1/4"	3	1
	6	10	3	8	43	1 11/16"	3	1
	6	9	3	7	43	1 11/16"	3	1
	6	10	3	8	45	1 3/4"	3	1
	6	10	3	8	48	1 7/8"	3	1
Flat Face / Retrac
	6	9	3	9	48	1 7/8"	3	1
	6	10	3	9.5	51	2"	3	1
	6	10	3	9.5	54	2 1/8"	3	1
	6	10	3	10	57	2 1/4"	3	1
Bench drilling
Flat Face
	8	11	6	11	76	3"	2	0
	8	10	4	10	64	2 1/2"	2	0
Drop Center
	6	10	3/1	10/9	64	2 1/2"	3	0
	6	12.7	3/1	11 / 9.5	76	3"	3	0
Drop Center
	6	14	3/1	12.7 / 9.5	89	3 1/2"	3	0
	6	14	3/1	12.7 / 9.5	89	3 1/2"	3	0
Flat Face / Retrac
	8	10	4	10	64	2 1/2"	2	0
Flat Face / Retrac
	8	11	6	11	76	3"	2	0
Drop Center / Retrac
	6	10	3/1	10/9	64	2 1/2"	3	0
	6	12.7	3/1	10 / 9.5	76	3"	3	0
Drop Center / Retrac
	8	11	4/2	11 / 9.5	89	3 1/2"	4	1
	8	11	4/2	11 / 9.5	89	3 1/2"	4	1

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

  Based on order quantity, normally it takes 25 days for production.

  Only 2 or 3 days if we have stock on your request size.

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:

  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