• API 5D
  • API 5D
  • API 5D
  • API 5D
API 5D
API 5CT is standard technical specifications for steel casing pipes used for oil wells in petroleum and natural gas industries.
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Mechanical properties of API drill pipe grades
GradeYield strengthTensile strengthAPI
psiN/mm2min.psiN/mm2max.psiN/mm2min.
E-7575 000515105 000725100 000690Spec. 5 DP 
X-9595 000655125 000860105 000725Spec. 5 DP 
G-105105 000725135 000930115 000795Spec. 5 DP 
S-135135 000930165 0001 140145 0001 000Spec. 5 DP 
 Mechanical properties of API tool joint grades
Yield strengthYield strengthTensile strengthElongationBox
psiN/mm2min.psiN/mm2maxpsiN/mm2minin 2 inches%minHardnessBrinellmin
120 000827165 0001138140 00096513285
Chemical composition requirements
Pipe bodyPhosphorusmax. %Sulfurmax. %
Pipe body grade E0.0300.020
Pipe body grades X, G and S0.0200.015
Tool joint0.0200.015


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