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Home / Products / Drill Steel Pipe / Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory
Quality Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe factory

Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe

Basic Properties
Model Number: GB/T9808-2008, JIS G3465-2006, ASTM A519
Tags

cold drawn steel pipe

oil drill pipe

drilling steel pipe
Product Summary
Mining tubes with Alloy steel grade Straightness, Concentricity, Mechanical Properties can meet the requirement of DCDMA (USA), BS4019 (UK), METRIC (SWEDEN) Size range: O.D.:6-95mm W.T.:1-10mm L:max12000mm Standard Producton Method Tube Size Tolerance GB/T 9808-2008 Hot rolled OD (+1.0%D) +0.65 (-0...

Product Details

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oil drill pipe

,

cold drawn steel pipe
Product Description

Mining tubes with Alloy steel grade

 

 

Straightness, Concentricity, Mechanical Properties can meet the requirement of DCDMA (USA), BS4019 (UK), METRIC (SWEDEN)

 

Size range: O.D.:6-95mm     W.T.:1-10mm      L:max12000mm

 

 

Standard Producton Method Tube Size Tolerance
GB/T 9808-2008 Hot rolled OD (+1.0%D) +0.65
(-0.5%D) -0.35
WT ≤10 (+15%S)  +0.45
 (-10%S)  -0.35
＞10 (+12.5%S, -10%S)
Cold drawn OD 　 ±0.50%D or ±0.20
WT 　 ±8%S or ±0.15
Q(N)/ XJY118-2010 Cold drawn OD OD ±0.40%D or ±0.20
WT WT ±7%S or ±0.15

 

Normal Sizes:
Designation Outside Diameter (mm) Inside Diameter (mm)
　 Min Max Min Max
A Wireline 44.45 44.70 34.82 35.07
B Wireline 55.55 55.90 45.95 46.30
N Wireline 69.95 70.30 60.05 60.30
H Wireline 88.90 89.38 77.62 78.10
P Wireline 114.30 114.78 102.79 103.27

 

Mechanical Properties:
Stee Grade Tensile Strength
Mpa min		 Yield Strength
Mpa min		 Elongation
%  min		 HRC Heat Treatment
T600 790 600 14 ~ N
T750 850 750 14 26-31 QT
T850 950 850 14 28-33 QT

 

Chemical composition
Stee Grade C Si Mn P max S max Cu max Cr Mo B
T600
(45MnMoB)		 0.43-0.48 0.17-0.37 1.05-1.35 0.02 0.015 0.20 ~ 0.20-0.25 0.001-0.005
T750
(30CrMnSiA)		 0.28-0.34 0.90-1.20 0.80-1.10 0.02 0.015 0.20 0.8-1.1 ~ ~
T850
4140		 0.38-0.43 0.17-0.35 0.70-0.90 0.02 0.015 0.20 0.9-1.1 0.15-0.25 ~
                   
Mechanical Properties:
Steel Grade Tensile Strength Mpa 　 Yield Point Mpa 　 Elongation % Heat treatment
Min
ZT380 640 380 14 Normlized
ZT490 690 490 12 Normlized
ZT540 740 590 12 Normlized
ZT590 770 590 12 Normlized
ZT640 790 640 12 QT
ZT740 840 740 10 QT
T850 950 850 15 QT

 

Applications:For Geological Drill underground for Oil and mineral, for mining

 

 

Mr. Richard SHEN

Managing Director

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