PARVEEN Heavy Wall Drill Pipe consists of two tool joints and one central part. The steel used in the manufacture of the tool joints is a AISI-4145H mod, high purity steel, fully heat treated to 285-310 Brinell hardness and 40 ft x lb minimum IZOD impact strength. All other physical properties conform with API standard 7 latest revised edition. The central part is made from a soild bar of modified AISI-1340 steel, fully heat treated. The tool joints are attached by welding.

Stress Relief Grooves & Connections Features

- Parveen long stress relief grooves on box ends are standard on 4 1/2" IF, 4" IF & 3 1/2 IF Connections.
- API stress relief grooves on pin ends are standard on 4 1/2" IF, 4"IF & 3 1/2 IF connections.
- Thread roots are cold worked on all sizes.
- All connections are phoshatized, coated with lubricant and provided with steel protectors.

Hardbanding
To optimize wear resistance hardbanding is standard on pin and box connections and central upset. The heavy duty hard metal is sintered granular tungsten carbide 10/20 mesh or 20/45 mesh(fine particles). The hardbanding is deposited by an automatic machine after pre-heating the pipe and is followed by stress relieving. Standard pads
- One 4" wear pad on both pin and box end. Plus one 1" pad on taper section of box.
- Two 3" wear pads on central upsets.

The hardbanding is completely flush on both tool joints and 4/32" oversize on the central upset (fully flush on request).

On Enquiries and Orders Please Specify:

- Nominal Size
- Range
- API stress relief grooves, if needed
- Internal Coating, if needed.