Hollow Polished Rod

• After-sales Service: Provided
• Warranty: 1 Year or 2000hours
• Manufacturing Process: Casting
• Surface Treatment: Sand Blast
• Operation Pressure: Vacuum
• Material: Cast Steel
• Model NO.: Hollow Polished Rod
• Transport Package: Skid
• Specification: 8, 350 x 2, 400 x 3, 000 mm
• Trademark: SAINTWAH
• Origin: Saintwah Inc.
• HS Code: 8207801000
• Production Capacity: 10000

Product Description

Hollow Polished Rod

Spiral weighted drill pipe: For the components on the drill string, the weight per unit length of the weighted drill pipe is medium. This kind of drill pipe is a heavy pipe wall with extended joints.

Product Description

Spiral weighted drill pipe: For the components on the drill string, the weight per unit length of the weighted drill pipe is medium. This kind of drill pipe is a heavy pipe wall with extended joints.

The outer diameter of the spiral weighted drill pipe is similar to that of the standard drill pipe to facilitate the operation of the rig. The characteristic of weighted drill pipe is that it can bear pressure like drill collar. A unique feature of the weighted drill pipe is the wear band in the middle of the drill pipe. The wear-resistant belt can act as a stabilizer, improve the rigidity of the weighted drill pipe in the drill string, and reduce the well deviation

Integral spiral heavy weight drill pipe is an extension of center upset of integral heavy weight drill pipe and milling spiral groove.

 

Drilling specifications

in	OD in	ID in	Joint OD in	Joint ID in	Thread	Elevator diameter in	Middle thickening OD in	Minimum diameter 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

 

Production

 

 

Shot blasting

 

 

Packing

 

 

 

Process flow

Inspection of raw materials into the factory-material straightening-centering hole-frame position-drilling and boring-rough turning outer circle-tube body flaw detection-quenching and tempering heat treatment-hardness and mechanical performance testing-fixed length-flaw detection-fine Turning outer circle-milling screw-inspecting-threading-thread inspection-thread flaw detection-milling marking groove-marking-thread phosphating-pipe body painting-spraying marking-final inspection-packing-into storage

 

About Us

We are a professional manufacturer specialized in series of drill tools: PDC, PDC drill bits, diamond drill bits, etc. We can also produce other products according to the customers requirements. We sincerely welcome our friend both home and abroad to come for business talks.