Integral Spiral Heavy Weight Drill Pipe

Integral spiral heavy weight drill pipe is to extend the central upset of heavy weight drill pipe and to cut spiral groove on heavy weight drill pipe.

Thechnical specifications and parameters

mm(in)	DideBody					ToolJoint
	I.D.mm	elevaterupsetmm	O.D.mm	SpiralO.D.mm	Spiraldepthmm	Thread	O.D.mm	I.D.mm
88.9(31/2)	54.0	92.1	88.9	101.6	9.5	NC38	120.6	54.0
114.3(41/2)	69.8	117.5	114.3	127.0	12.7	NC46	158.8	69.8
127.0(5)	76.2	130.2	127.0	139.7	12.7	NC50	165.1	76.2

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