Round Extension drill rods 

• Product introduction
• Product parameters

Introduction to Round Extension drill rods 

Round Extension drill rod 

 

Parameters:

Thread： R25，R28，R32，R38,T38，T45，T51

Rod size ：D32，D39，D46，D52

Length： 600mm to 6400mm

Color:  Black or Customized

Slot for wrench: with or without

Production process:  CNC machining and advanced Heat treatment &full carburized

Features:

• Made from the same steel as Sandvik;

23CrNi3Mo, which is in same league as Sandvik Sandbar 64, is applied as drill rod material.

• Advanced production process:

produced by CNC machining and advanced heat treatment. It will connect the drill rod and the drill bit more better. 

• Full-carburization drill rod for high wear-resistance and strength.

Carburizing process is applied to promote surface hardness, thus grant better wearing quality and lifespan for the drill rods;

• Friction welding workmanship .

It makes the thread and the body integrated without broken. 

• Quality close to world famous brands, but our prices are much more competitive.
• Complete types of drill rod for various drilling scenarios.

Advanced engineering, precision manufacturing and high-grade materials assures the reliable quality of our drill rod.

Applications: Drilling duties in tunneling, construction, mining, quarrying, etc.

Specifications：

Description	Length		Diameter		Weight
	mm	feet	mm	inch	kg
Extension Rod R32 – Round32 – R32	2435	8′	32	1 1/4”	14.20
	3050	10′	32	1 1/4”	17.80
	3660	12′	32	1 1/4”	21.30
MF (Speed) Rod R32 – Round32 – R32	3050	10′	32	1 1/4”	17.90
	3660	12′	32	1 1/4”	21.45
	4270	14′	32	1 1/4”	25.10
Extension Rod R38 – Round39 – R38	3050	10′	39	1 17/32”	25.50
	3660	12′	39	1 17/32”	30.60
	4270	14′	39	1 17/32”	35.40
MF (Speed) Rod R38 – Round39 – R38	3050	10′	39	1 17/32”	26.50
	3660	12′	39	1 17/32”	31.60
	4270	14′	39	1 17/32”	36.40
Extension Rod T38 – Round39 – T38	3050	10′	39	1 17/32”	25.50
	3660	12′	39	1 17/32”	30.60
	4270	14′	39	1 17/32”	35.40
MF (Speed) Rod T38 – Round39 – T38	3050	10′	39	1 17/32”	26.50
	3660	12′	39	1 17/32”	31.60
	4270	14′	39	1 17/32”	36.40
Extension Rod T45 – Round46 – T45	3050	10′	46	1 3/4”	35.80
	3660	12′	46	1 3/4”	43.00
	4270	14′	46	1 3/4”	50.10
MF (Speed) Rod T45 – Round46 – T45	3050	10′	46	1 3/4”	36.40
	3660	12′	46	1 3/4”	43.70
	4270	14′	46	1 3/4”	50.70
Extension Rod T51 – Round52 – T51	3660	12′	52	2”	54.20
	4270	14′	52	2”	63.50
MF (Speed) Rod T51 – Round52 – T51	3660	12′	52	2”	55.70
	4270	14′	52	2”	64.80
Extension Rod R32 – Round32 – R32	915	3′	32	1 1/4”	5.50
	1220	4′	32	1 1/4”	7.32
	1525	5′	32	1 1/4”	9.18
	1830	6′	32	1 1/4”	10.95
MF (Speed) Rod R32 – Round32 – R32	915	3′	32	1 1/4”	5.45
	1220	4′	32	1 1/4”	7.28
	1525	5′	32	1 1/4”	9.10
	1830	6′	32	1 1/4”	10.72
Extension Rod T38 – Round39 – T38	1220	4′	39	1 17/32”	9.20
	1525	5′	39	1 17/32”	10.25
	1830	6′	39	1 17/32”	15.30
MF (Speed) Rod T38 – Round39 – T38	1220	4′	39	1 17/32”	9.50
	1525	5′	39	1 17/32”	11.25
	1830	6′	39	1 17/32”	16.30
MF (Speed) Rod T45 – Round46 – T45	1525	5′	46	1 3/4”	18.50
	1830	6′	46	1 3/4”	22.20
MF (Speed) Rod T51 – Round52 – T52	1525	5′	52	2”	17.85
	1830	6′	52	2”	28.10