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42.4*6.8 45MnMoB 30 Crmnsia DZ40 DZ60 Geological Drill Pipes

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42.4*6.8 45MnMoB 30 Crmnsia DZ40 DZ60 Geological Drill Pipes

Brand Name : Torich

Model Number : 40crni2mo

Certification : ISO9001

Place of Origin : China

MOQ : 5tons

Price : negotiation

Payment Terms : L/C, T/T

Supply Ability : 1000tons per year

Delivery Time : 5-8 weeks

Packaging Details : In bundles or in wooden boxes package

Material : 45MnMoB DZ40 DZ60

Length : Random Length

Machining : Cut

Origin : China

End : Plain

Certificate : EN10304.3.1

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42.4*6.8 45MnMoB DZ40 DZ60 Geological Drill Pipes

Key Word
45MnMoB Seamless Drill Tubes
Material
45MnMoB, 10#, 20#, 45#, 4130, 4140, 16Mn etc
Size
OD: 5-420mm; WT: 0.5-50mm; Length: 3450mm, 3500mm, max12000mm
Technique
Cold Drawn Seamless
Application
For wire-line drill rods,core barel tubes,drill rods coupling casing
Chemical composition of 45MnMoB
C: 0.41-0.49, Si: 0.17-0.37, Mn: 0.9-1.2, S: 0.04max, P: 0.04max, Mo: 0.2-0.3, B: 0.001-0.005

Tolerance of Outer Diameter and Wall Thickness

Standard
Production Method
Tube Size
Tolerance
GB/T9808-2008
Hot Rolled
OD
(+1.0%D) or +0.65
(-0.5%D) -0.35
WT
≤10
(+15%S)or +0.45
(-10%S) -0.35
>10
(+12.5%S, -10%S)
Cold Drawn(rolled)
OD
±0.50%D or ±0.20
WT
±8%S or ±0.15
Q(N)/T118-2010
Cold Drawn
OD
±0.40%D or ±0.20
WT
±7%S or ±0.15

Mechanical Property

Steel Grade
Tensile Strangth Rm/MPa
Specifies the non-proportional extension strength Rp0.2/MPa
Percentage elongation after fracture
A/%
No less than
ZT380
640
380
14
ZT490
690
490
12
ZT520
780
520a
15b
ZT540
740
540
12
ZT590
770
590
12
ZT640
790
640
12
ZT740
840
740
10

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42.4*6.8 45MnMoB 30 Crmnsia DZ40 DZ60 Geological Drill Pipes42.4*6.8 45MnMoB 30 Crmnsia DZ40 DZ60 Geological Drill Pipes


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