heavy weight drill pipe,steel tube,Butt weld fittings,Seamless Mechanical Tubing

heavy weight drill pipe

FBE Coated Pipe,Round Steel Tubing,Structural Steel Pipe

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heavy weight drill pipe

Category : OCTG

Product Name	Heavy Weight Drill Pipe
Application	Used for connect 2 joints of tubing or casing
Size	OD: 2 7/8” – 6 5/8" LENGTH: Range 2 and Range 3
Standard	API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,API 5CT and 5B L80-1,C90, C95,T95, P110, Q125
End	Internal Upset, External Upset, Plain End Upset, Non Upset
Type	NC38、NC46、NC50、5-1/2 FH
Surface	Anti-corrosion&water Based Paint
Packing	Protection Caps in Both Ends, Waterproof Paper Wrapped

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Description
Specification
Standard
Process
Packing

Heavy duty drill pipe (hwdp) looks like ordinary drill pipe, except for upsetting along the center of the drill pipe, which helps to prevent excessive buckling.
Hwdp is used as a transition stiffness section, usually between rigid drill collars and rigid drill collars, and between relatively light and flexible drill pipe joints to reduce fatigue failure directly above the bottom hole assembly.
Its wall thickness is three times that of ordinary drill pipe of the same size to increase the extra weight of the drill bit.

Hwdp is most commonly used in directional drilling because it is easier to bend and helps to control torque and fatigue in large angle operations.
Hwdp is manufactured according to API specification 7 / 7-1.

Steel grade:
Overall hwdp: AISI 4145hm
Welding hwdp: AISI 1340 pipe body, AISI 4140hm tool joint

Size range:
Outer diameter: 27 / 8 inch – 65 / 8 inch
Weight range: 6.27 # / ft to 27.72 # / ft
Length: range 2 and range 3
End finish: internal thickening, external thickening, flat end thickening and non thickening
Tool joint type: nc38, nc46, NC50, 5-1 / 2 FH

Standard heavy weight drill pipe

Size(in)	O.D. (in)	I.D. (in)	Tool Joint O.D. (in)	Tool Joint I.D. (in)	Connection	Max.elevator diameter (in)	Central upset dia. (in)	Min.drift dia.size(in)
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				1 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 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	NC50	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 5/8
		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

Spiral heavy weight drill pipe

Spiral heavy weight drill pipe
Specification mm	Tube					Joint
Specification mm	ID mm	Elevator upsetmm	elevator groove /Slip outside diametermm	Screw in diametermm	Spiral groove depthmm	Thread Type	OD mm	ID mm
88.9(3 1/2)	54	92.1	88.9	101.6	9.5	NC38	120.6	54
114.3(4 1/2)	69.8	117.5	114.3	127	12.7	NC46	158.8	69.8
127.0(5)	76.2	130.2	127	139.7	12.7	NC50	165.1	76.2