Active Member
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[China]
Address: Daqiao Developing Zone Haiyan,Zhejiang Province,China
Contact name:Richard
Torich International Limited |
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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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