Главная страница

Tapered drill pipe

Shank size: HEX25*108
Length: 400mm,800mm,1600mm,1800mm,2400mm,3200mm etc. Taper Degree: 7°, 11°, 12°. Materials:Z708(40SiMnCrNiMo)/55SiMnMo

Key words：

Tapered Drill Rod

Related Products

Message

Product Details

Description
Tapered drill pipe is to provide a hexagonal chuck section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain the proper shank striking face position in the rock drill, and a tapered drill bit end. Tapered steel lengths are measured from the collar to the bit end. Holes are usually drilled in 0.6 m increments to accommodate the air leg feed length. The drilled steel is extracted and followed with a slightly smaller diameter rock drill bit on the next steel length in the sequence.
The drill pipe is the basic part of the drill string. Its main function is to transmit torque and transport drilling fluid, and to deepen thebore hole continuously by the gradual lengthening of the drill pipe.Therefore, drill pipe occupies a very important position in oil drilling.

Performance
Carburizing process is applied to promote surface hardness, thus grant better wearing quality and life span for the drill rods;
Cost-effective, good performance with reasonable price.
Complete types of drill rod for various drilling scenarios.

Application
For drilling medium-hard to hard and abrasive rock formations, taper angles of 11° and 12° are normally used on modern drill rigs, like Y6, Y10, Y24, YT24 Mobile rock drills pneumatic and hydraulic. For low impact rock drills and softer rock formations, a narrow tape range of 7° is used, such as Indian, Saudi’s granite and marble quarry. A comprehensive range of taper button bits, cross bits and chisel bits with6°, 7°, 11°, 12°, drill hole diameter: 28mm-57mm.

Details Form

H22 Tapered rock drill steel rod
Drill rod	Length		Weight （kg）	HENGLONG P/N
Drill rod	mm	foot	Weight （kg）	HENGLONG P/N
Hex. taperd rod	600	2′	1.93	21H22-7/108-0600-40
	800	2′6″	2.54	21H22-7/108-0800-40
	1000	3′3″	3.15	21H22-7/108-1000-40
	1200	3′9″	3.76	21H22-7/108-1200-40
	1500	4′11″	4.68	21H22-7/108-1500-40
	1600	5′3″	4.98	21H22-7/108-1600-40
	1800	5′9″	5.59	21H22-7/108-1800-40
	2000	6′7″	6.20	21H22-7/108-2000-40
	2200	7′2″	6.81	21H22-7/108-2200-40
	2300	7′6″	7.12	21H22-7/108-2300-40
	2400	7′9″	7.42	21H22-7/108-2400-40
	2500	8′2″	7.73	21H22-7/108-2500-40
	2600	8′8″	8.03	21H22-7/108-2600-40
	3000	9′10″	9.25	21H22-7/108-3000-40
	3500	11′5″	10.78	21H22-7/108-3500-40
	4000	13′1″	12.30	21H22-7/108-4000-40
	4500	14′8″	13.83	21H22-7/108-4500-40
	5000	16′4″	15.35	21H22-7/108-5000-40
	5500	18′1″	16.88	21H22-7/108-5500-40
	6000	19′7″	18.30	21H22-7/108-6000-40
	4000	13′1″	16.1	21H25-7/159-4000-40
	4700	15′4″	18.90	21H25-7/159-4700-40
	5000	16′4″	22.1	21H25-7/159-5000-40
	5500	18′1″	22.1	21H25-7/159-5500-40
	6000	19′7″	24.1	21H25-7/159-6000-40
Hex.22mm Tapered rod,carburizd	610	2′	2.2	21H22-11/108-0610-40
	1220	4′	4.1	21H22-11/108-1220-40
	1830	6′	5.9	21H22-11/108-1830-40
	2435	8′	7.8	21H22-11/108-2435-40
	3200	10′6″	10.1	21H22-11/108-3200-40
	3655	12′	11.5	21H22-11/108-3655-40
	4000	13′1″	12.6	21H22-11/108-4000-40
	4800	15′9″	14.9	21H22-11/108-4800-40
	5600	18′4″	17.4	21H22-11/108-5600-40
	6400	21′	19.8	21H22-11/108-6400-40
	7200	23′6″	22.2	21H22-11/108-7200-40
	8000	26′2″	24.6	21H22-11/108-8000-40
Hex.22mm Tapered rod,carburizd	610	2′	2.20	21H22-12/108-0610-40
	1220	4′	4.10	21H22-12/108-1220-40
	1830	6′	5.90	21H22-12/108-1830-40
	2000	6′7″	6.40	21H22-12/108-2000-40
	2435	8′	7.80	21H22-12/108-2435-40
	2600	8′8″	8.30	21H22-12/108-2600-40
	3200	10′6″	10.10	21H22-12/108-3200-40
	3655	12′	11.50	21H22-12/108-3655-40
	4000	13′1″	12.60	21H22-12/108-4000-40
	4800	15′9″	14.90	21H22-12/108-4800-40
	5600	18′4″	17.40	21H22-12/108-5600-40
	6400	21′	19.80	21H22-12/108-6400-40
	7200	23′6″	22.20	21H22-12/108-7200-40
	8000	26′2″	24.60	21H22-12/108-8000-40

HENGLONG workshop and Process of manufacturing

Packing and shipping

Factory

Customer visit

Production

QUALITY INSPECTION PROCESS

Product quality is one of the core links in the development and growth of Yanggu Henglong Engineering Co., Ltd. Our company has strict internal and external inspection processes to ensure the quality of our products. Our inspection process for our products is as follows.

Tapered Drill Rod