Welded Heavyweight Drill Pipes

Welded Heavyweight Drill Pipesadmin2024-12-10T08:01:29+00:00

Welded Heavyweight Drill Pipes

Description

Welded Heavyweight Drill Pipes are made by welding the joints to the pipe body, typically using a friction welding process.
Features: Simple manufacturing process, minimal material waste, and low cost.
Performance in drilling is equivalent to that of integral heavyweight drill pipes.
Materials: Generally composed of two different materials, such as AISI4137 or AISI4145H for the joint material, and AISI1340 or AISI4145H for the pipe body material.
Specifications of Heavyweight Drill Pipes (Integral):

Size	Outer Diameter	Inner Diameter	Joint Outer Diameter	Joint Inner Diameter	Connection Thread Type	Maximum Hanger Diameter	Middle Thickened Diameter	Minimum Pass-Through Diameter
3 1/2″	3 1/2″	2 1/4″	4 3/4″	2 1/4″	NC38	3 7/8″	4″	2″
	2 1/16″ (4 7/8″, 5″)	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″	3 1/4″	5 1/2 FH	5 11/16″	6″	3″
	3 3/8″ (7 1/4″, 7 1/2″)	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″	4″	6 5/8 FH	6 15/16″	7 1/8″	3 3/4″
	4 1/2″ (8 1/4″, 8 1/2″)	4 1/2″				4 1/4″
	5″	5″				4 3/4″

Physical Properties
- Yield Strength ≥758 MPa (≥110,000 Psi), ≥965 MPa (≥140,000 Psi)
- Tensile Strength ≥758 MPa (≥110,000 Psi), ≥965 MPa (≥140,000 Psi)
- Elongation ≥13%
- Brinell Hardness 285～341 HB
- Charpy Impact Energy ≥54 Akv J

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