Drill Steel Pipe For Mineral Mining , Alloy Steel Grade Oil Drill Pipe

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Drill Pipes for Oil and Mineral Mining

 

 

Applications: For Geological Drill underground for Oil and Mineral, for Mining Exploration                
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)/ T118-2010 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
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TORICH INTERNATIONAL CO.,LTD
706 Qiling Mansion North Building Yinzhou District, Ningbo, Zhejiang, China (Mainland)
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