Standard DTH Drill Pipes

• Product introduction
• Product parameters

Introduction to Standard DTH Drill Pipes

SINODRILLS Standard DTH Drill Pipes

DTH drill rods transmit compressed air, so as to power the hammers to perform drilling works. Sinodrills DTH drill pipes are made of superior alloy and the both thread ends are friction welded to the seamless steel pipe.The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer.

Features

• Complete sizes for option, suitable for different types of DTH drilling system;

• The rods are made of cold-drawn steel with high manufacturing precision;

• Thread joint sturdily linked to the rod via friction welding;

• Nitriding process grants the thread joint good hardness, good wearing quality and thus long lifespan.

Applications

Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc.

Specifications：

OD (A)	Wall thickness (B)	Effective length (L)	Wrench flat (C/G)	Joints connection
mm	mm	mm	mm	Pin – Box
76	5.5	1000/1500/2000/3000	57/65	2 3/8” REG
76	6.5	1000/1500/3000/4000/5000/6000	65	2 3/8” REG
89	5.5	1000/1500/2000/3000	65	2 3/8” REG, 2 3/8” IF
89	6.5	1000/1500/2000/3000/4500/6000	65	2 3/8” REG, 2 3/8” IF
102	6.5	1500/2000/3000/4000/5000/6000	75/83	2 7/8” REG
102	8.5	1500/2000/3000/4000/5000/6000	75/83	2 7/9” REG
114	6.5	1000/1500/2000/3000/4500/6000	89/95	3 1/2” REG, 3 1/2” IF, 2 7/8 IF
114	8.5	1500/2000/3000/4000/5000/6000	89/95	3 1/2” REG, 3 1/2” IF, 2 7/8” IF
127	10	3000/4000/5000/6000/8100/9140	89	3 1/2” REG, 4 1/2” REG
127	19	3000/4000/5000/6000/8100/9140	89	3 1/2” REG, 4 1/2” REG
140	11	3000/4000/5000/6000/8100/9140/10670	114	4 1/2” REG
140	19	3000/4000/5000/6000/8100/9140/10670	114	4 1/2” REG