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Drill pipe and collar

Integral Heavy Weight Drill Pipe 整体加重钻杆

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Integral Heavy Weight Drill Pipe 整体加重钻杆

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Category： Drill pipe and collar

Key words：Drill pipe and collarIntegral Heavy Weight Drill Pipe 整体加重钻杆

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The wall thickness of heavy weight drill pipe is between drill pipe and drill collar,its structure is simliar with drill pipe.It is made from premium alloyed steel.Its both tool joints and middle upset are welded hardbands.Technical parameters meet with API Spec7-1 Standard.

Size	O.D.	I.D.	Tool Joint O.D.	Tool Joint I.D.	Thread type	Max.elevator diameter	Central upset dia.	Min drift dia.size
3 1/2	3 1/2	2 1/4	4 3/4 (4 7/8, 5)	2 1/4	NC38	3 7/8	4	2
		2 1/16		2 1/16				2 13/16
4	4	2 1/2	5 1/4	2 1/2	NC40	4 3/16	4 1/2	2 1/4
		2 9/16		2 9/16				2 5/16
4 1/2	4 1/2	2 11/16	6 1/4	2 11/16	NC46	4 11/16	5	2 17/16
		2 3/4		2 3/4				2 1/2
		2 13/16		2 13/16				2 9/16
5	5	3	6 5/8	3	NC 50	5 1/8	5 1/2	2 3/4
5 1/2	5 1/2	3 1/4	7 (7 1/4, 7 1/2)	3 1/4	5 1/2FH	5 11/16	6	3
		3 3/8		3 3/8				3 1/8
		3 7/8		3 7/8				3 5/8
		4		4				3 3/4
6 5/8	6 5/8	4	8 (8 1/4, 8 1/2)	4	6 5/8FH	6 15/16	7 1/8	3 3/4
		4 1/2		4 1/2				4 1/4
		5		5				4 3/4

Thechnical specifications and parameters:

Size	Tube OD (+1/16,-1/32)	Tube OD 1	Tool Joint OD (+1/16,-1/32)2	Tool Joint OD (+1/8,-0)	Connection	Max Elevator Upset Dia	Center Upset Dia (+1/16,-1/32)	Min Drift Dia3
						Deu	Dcu
3 1/2	3 1/2	2 1/4	4 3/4 (4 7/8,5)	2 1/4	NC 38	3 7/8	4	2
		2 1/16		2 1/16				1 13/16
4	4	2 1/2	5 1/4	2 1/2	NC 40	4 3/16	4 1/2	2 1/4
		2 9/16		2 9/16				2 5/16
4 1/2	4 1/2	2 11/16	6 1/4	2 11/16	NC 46	4 11/16	5	2 7/16
		2 3/4		2 3/4				2 1/2
		2 13/16		2 13/16				2 9/16
5	5	3	6 5/8	3	NC 50	5 1/8	5 1/2	2 3/4
5 1/2	5 1/2	3 1/4	7 (7 1/4,7 1/2)	3 1/4	5 1/2 FH	5 11/16	6	3
		3 3/8		3 3/8				3 1/8
		3 7/8		3 7/8				3 5/83/4
		4		4				3 3/4
6 5/8	6 5/8	4	8 (8 1/4,8 1/2)	4	6 5/8 FH	6 15/16	7 1/8	3 3/4
		4 1/2		4 1/2				4 1/4
		5		5				4 3/4
1.Maximum tube ID is 1/8 larger than nominal.Minimum tube ID is controlled by the drift requirement. 2.Optional Tool Joint ODs shown in parenthesis,to be agreed between purchaser and manufacturer. 3.Drift Diameter is based on ID tolerances of heavy wall pierced tube used for the center section.