super performance MF rod from China manufacturer

Price:	25.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Henan, China (Mainland)


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Product Detail

Model No.: KKD-TB09

Production Capacity: 50000 pieces/month

Delivery Date: Depend on the quantity

Type: thread rod

Name: thread rod

Processing Type: Forging

Certificate: ISO9001

Length: different

Means of Transport: Ocean,Air

Packing: Standard package or as your...

Machine Type: Drilling Tool

Brand Name: King Kong

Material: 23CrNi3Mo

Use: Ore mining,drilling,quarryi...

Sizes: R25,R32,R32L,R38,R51,T30,T4...

Color: Black

Thread rock drill rod incluing tunneling and drifting rod, the thread incluing T38,T45 ,T51 and GT60 thread etc.

Advantage of the extension rods MF rods:

Extension rods are one major spare part in terms of drill application area, there are two shapes of extension rods, one is round type, another one is hexagonal type. But all extension rods are threaded and made by hollow drill steels, this means usually extension rods are hollow. This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. Two ends threads can be used for connecting couplings, shanks, couplings or bits. Typically two ends of extension rods are male, while sometime one end is male and another one is female, then we call it M/F rod. We need couplings to connect extension rods, while for MF rods, male and femal rods, because one end is female, so couplings are not necessary.

Usually for extension rods,there are R22,R25,R28,R32,R38,T45,T51,threads,and

different lengths of rods are available from 1000mm to 3660mm usually

Parameter of the extension rod:

Rods Dimension	Length				Driven Thread	Suitable Bits Thread	Drilling Hole Range
	M-M		M-F
	mm	foot	mm	foot			mm	inch

Hex.25	915 ~ 3700	3 ~ 12	610 ~ 1220	2 ~ 4	R25, R28, R32	R25	33 ~ 51	1 19/64 ~ 2
Hex.28	2100 ~ 4920	6 3/4 ~ 16	1220 ~ 3050	4 ~ 10	R28, R32, R38	R28	37 ~ 51	1 29/64 ~ 2
Hex.32	2400 ~ 5530	7 7/8 ~ 18			R28, R32, R38, T38	R32	40 ~ 64	1 37/64 ~ 2 1/2
Round32	915 ~ 4310	3 ~ 14	915 ~ 4270	3 ~ 14	R32, R38, T38	R32	45 ~ 64	1 3/4 ~ 2 1/2
Hex.35	2670 ~ 6100	8 5/8 ~ 20	3700 ~ 6400	12 ~ 21	R32, R38, T38	R32	45 ~ 76	1 3/4 ~ 3
Round39	610 ~ 6095	2 ~ 20	610 ~ 6095	2 ~ 20	R38, T38, T45	T38, T45	57 ~ 89	2 1/4 ~ 3 1/2
Round46	1830 ~ 6095	6 ~ 20	1525 ~ 6095	5 ~ 20	T38, T45, T51	T45, T51	70 ~ 102	2 3/4 ~ 4
Round52	3050 ~ 6095	10 ~ 20	1525 ~ 6095	5 ~ 20	T45, T51	T45, T51	76 ~ 127	3 ~ 5

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Welcome to contact us if you need any tools!