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API 5CT K55 Seamless Casing pipe
API 5CT K55 Seamless Casing pipe
API 5CT K55 Seamless Casing pipe
API 5CT K55 Seamless Casing pipe

API 5CT K55 Seamless Casing pipe

API 5CT is standard technical specifications for steel casing and tubing pipes used for oil wells in petroleum and natural gas industries.In the oil boring, K55 API 5CT packaging or tubing is a generally regular sort.
Product introduction
API 5CT K55 Casing Tubing serves to transport both crude oil and natural gas from oil and gas layer to the surface pipeline after drilling is completed. It is able to bear the pressure produced by the exploitation process. After the outer surface is coated with a protective layer, the tubing is marked in accordance with the API 5CT standard and strapped with metal belt. Our oilfield tubing & API 5CT K55 Casing Tubing can be widely applicable to petroleum, construction, shipbuilding, smelting, aviation, electric power, food, paper, chemical industry, medical equipment, boilers, heat exchangers, metallurgy and so on.

Specfications
API 5CT K55 Seamless Casing pipe
Available Sizes 2 3/8″, 2 7/8″ and 3 ½” Outer Diameter
Grades J55, J55-FBNAU, N80, L80, P110
Tubing 1 1/4 “ – 2 1/16” Nom.
Standards API SPEC 5CT
Model in Common Use 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2"
Length Range R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m)
Steel Grade (Casing Grades, Tubing Grades) J55, K55, N80-1, N80-Q, L80, P110
Type of Screw Thread Non upset threaded end(NUE), External upset threaded end(EUE)
Specialties

Coating to customer specifications
External upset
Couplings – EUE, AB Modified, turned down, special clearance
couplings
Pup Joints
Heat treating
Hydrostatic Testing
Drifting (Full-length, or just ends)
Full third-party inspection capabilities (EMI, SEA, and Weld Line)
Threading

End Finishing External Upset Ends (EUE), Flush Joint, PH6 (and equivalent connections),
Integral Joint (IJ)
Technical data

Chemical Composition

Grade Type C Mn Mo Cr Ni max. Cu max. P max. S max. Si max.
min. max. min. max. min. max. min. max.
K55 - - - - - - - - - - - 0.03 0.03 -
 

Mechanical Properties

API 5CT Casing Standard Type API 5CT Casing Tensile Strength
MPa
API 5CT Casing Yield Strength
MPa
API 5CT Casing Hardness
Max.
API SPEC 5CT K55 ≥517 ≥655 ---
 

Tensile & Hardness Requirement

Grade Type Total elongation under load % Yield strength MPa Tensile strength min. MPa Hardness a max. Specified wall
thickness mm
Allowable hardness
variation b HRC
min. max .   HRC HBW
K55 - 0.5 379 552 655 - - - -
 

K55 Casing pipe Dimensions

Pipe Casing Sizes, Oilfield Casing Sizes & Casing Drift Sizes
Outer Diameter (Casing Pipe Sizes) 4 1/2"-20", (114.3-508mm)
Standard Casing Sizes 4 1/2"-20", (114.3-508mm)
Thread Type Buttress thread casing, Long round thread casing, Short round thread casing
Function It can protect the tubing pipe.
 

  
  

 

  
  

 

  

 

  

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