Geological Drilling Tube

Description

Dingxin manufactures a wide range of precision cold drawn seamless alloy steel tubes for drilling industry, including mother tubes for wireline drill rods, casings, inner tubes, outer tubes, couplings and etc. Dingxin’s premium quality tubes could flexibly satisfy different exploring depth and methods of coupling.

Advantages

Excellent microstructure

High straightness

Low residual hoop stresses 

Tight tolerances, low eccentricity

Product parameter

Size Range

O.D 30-139.7 mm, WT 3-19mm

Executive Standard

GB/T9808 Seamless Steel Tubes for Drilling

GB/T 16950, Geological core drilling tools

DIN2391, Seamless precision steel tubes

EN10305-1, Steel tubes for precision applications Part 1: Seamless cold drawn tubes

ASTM A519, Seamless Carbon and Alloy Steel Mechanical Tubing

DCDMA, Diamond Core Drilling Manufacturers Association

BS4019, Specification for rotary core drilling equipment 

JIS G3465, Seamless Steel Tubes for Drilling

According to customer’s specific requirements

Customize your tube

Steel Grade

45MnMoB, 30CrMnSiA, 30CrMo, 42CrMo, 40Mn2 ; 34CrMo4, 42CrMo4 ; 4130, 4135, 4140, 1541 and etc.

Delivery Condition

Cold drawn and stress relieved (+SR) (BKS)

Normalized (+N) (NBK)

Quenched and Tempered (QT)


Dimensional Range

SIZE

Wireline Drill Rod 

SIZE

Casing

Outer Diameter

(mm)

Inner Diameter

(mm)

Outer Diameter

(mm)

Inner Diameter

(mm)

Nom.

Nom. 

Nom.  Nom.

A

44.45

35.05

AW

57.1

48.4

B

55.55

46.05

BW

73.0

60.3

N

69.85

60.45

NW

88.9

76.2

H

88.90

77.80

HW

114.3

101.6

P

114.30

101.60

PW

139.7

127.0

S

139.70

125.50





SIZE

Outer Tube   

Inner Tube

Outer Diameter

(mm)

Inner Diameter

(mm)

Outer Diamete

(mm)

Inner Diameter

(mm)

Nom. 

Nom.

Nom.

Nom. 

A

46.05

36.50

32.54

28.58

B

57.15

46.05

42.85

38.10

N

73.03

60.33

55.58

49.99

H

92.08

77.80

73.03

66.80

P

117.48

101.60

95.25

88.90

S

142.88

125.50

117.00

111.00

Chemical Composition

Steel Grade

C

Si

Mn

P

S

Cr

Mo

B

45MnMoB

0.43-0.48

0.17-0.37

1.05-1.35

≤0.020

≤0.015


0.20-0.25

0.001-0.005

4130

0.28-0.33

0.15-0.35

0.40-0.60

≤0.040

≤0.040

0.80-1.10

0.15-0.25


1541

0.36-0.44

-

1.35-1.65

≤0.040

≤0.050




30CrMnSiA

0.28-0.34

0.90-1.20

0.80-1.10

≤0.020

≤0.015

0.80-1.10



4140

0.38-0.43

0.15-0.35

0.75-1.00

≤0.040

≤0.040

0.80-1.10

0.15-0.25


Mechanical Properties

Steel Grade

Deliver Condition

Min Tensile Strength 

(Mpa)

 Min Yield Strength 

(Mpa)

Min Elongation

 (%)

Hardness 

(HRC)

45MnMoB

Normalizing(+N)

790

600

14%

-

4130

Stress relieving(+SR)

813

690

15%

 ≥24

1541

Stress relieving(+SR)

813

690

15%

 ≥24

30CrMnSiA

Quenched and tempered(QT)

850

750

14%

26 - 31

4140

Quenched and tempered (QT)

950

850

14%

28 - 33



Applications

  • Drill Rod Tube

    Drill Rod Tube

  • Casing Tube

    Casing Tube

  • Core Barrel Inner Tube & Outer Tube

    Core Barrel Inner Tube & Outer Tube

  • Coupling Tube

    Coupling Tube