oilfield drill pipe

Specification

Nominal weight

Flat end weight

Outer diameter O.D.

Wall thickness

Steel grade

Upset end for weld-on drill pipe joint

lb/ft

kg/m

in

mm

in

（Ton）mm

2 3/8

E, X, G, S

EU

2 7/8

73

E, X, G, S

IU/EU

3 1/2

E

IU/EU

3 1/2

E, X, G, S

IU/EU

3 1/2

E

IU/EU

3 1/2

X, G, S

IU/EU

4

14

4

E, X, G, S

IU/EU

4 1/2

E

IU/EU

4 1/2

15

E, X, G, S

EU/IEU

4 1/2

20

E, X, G, S

EU/IEU

5

5

127

X, G, S

IU

5

5

127

E

IEU

5

5

127

X, G, S

EU/IEU

5

5

127

E

IEU

5

5

127

X, G, S

EU/IEU

5 1/2

E, X, G, S

IEU

5 1/2

E, X, G, S

IEU

6 5/8

E, X, G, S

IEU

6 5/8

E, X, G, S

IEU

Mechanical Property of Friction Welding Zone

Yield Strength

Tensile Strength

Elongation

Guided Bend

Impact Energy（Akv）

HRC

Item

MPa

MPa

%

J

Standard

Steel Grade

Tensile Test Piece：￠12.5； Impact specimen：10×10 Charpy -V、20℃

SY/T5561-92 Welding area Regulations

E-75

≥517

≥689

≥13

/

Average≥20Mini. value≥15

/

X-95

≥609

≥712

/

/

G-105

≥655

≥724

/

/

S-135

≥724

≥793

/

/

API Welding area Regulations

E-75

≥609

≥712

Bending plane cracks in any direction≤3.175mm

Average≥27Mini. value≥23

HAZ内HRC≤37

X-95

≥655

≥724

G-105

≥724

≥793

S-135

≥392778793

≥4211000

API Pipe Body Regulations

E-75

≥517≤724

≥689

/

Average≥54Mini. value≥47

/

X-95

≥655≤862

≥724

G-105

≥724≤931

≥793

S-135

≥931≤1138

≥1000