DTH Drill Pipe

DTH Drill Pipe
TEAMWHOLE MANUFACTURES WIDE RANGE AND MOST EFFICIENT DOWN-THE-HOLE (DTH) HAMMERS AND BITS FOR THE MINING BLASTING, WATER WELL ESPECIALLY DEEP WELL DRILLING, FOUNDATION CONSTRUCTION ETC. OUR PRODCUTS TRUST BY DRILLING CONTRACTOR BECASUE OF THE ADVANTAGES

Model	JS3.5D,JH3.5D,BR33,COP32
Matched Bit Shank	DHD3.5,BR33,COP32
HOLE RANGE	90-110mm
Application	Quary blasting hole drilling, mirco piling drilling

Details
Traditionally the threads and the joint between the tube and the end-pieces are vulnerable. To combat the problem we've friction-welded the joints for maximum strength and heat-treated the end-pieces for optimum durability.
Drill pipe is generally described by tube OD, nominal weight, pipe grade, type tool joint, thread connection and classification.
We do special heat-treating the threads ensures not only a long service life, but also simplifies joining and breaking. standard material for drill pipe is R780,but other material S135,G105 are available.

Model	Wall thickness	Thread		D-Wrench	K-Flat	L-Length	Weight
73mm(3")	6.5	API 2 3/8"REG	32	57	45	3000	40
73mm(3")	8.5	API 2 3/8"REG	32	57	45	3000	48
	6.5	API 2 3/8"REG	32	70	45	3000	48
	8.5	API 2 3/8"REG	32	70	45	3000	58
	6.5	API 3 1/2"REG	45	83	45	3000	48
	8.5	API 3 1/2"REG	40	83	45	3000	58
114mm(4.5")	6.5	API 3 1/2"REG	45	95	51	3000	63
114mm(4.5")	8.5	API 3 1/2"REG	45	95	51	3000	76
114mm(4.5")	6.5	API 4 1/2"REG	60	95	51	3000	63
114mm(4.5")	8.5	API 4 1/2"REG	60	95	51	3000	76