API 5CT Seamless casing tube,Oilfield Steel Casing Pipe

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API 5CT Seamless casing tube,Oilfield Steel Casing Pipe

API 5CT Seamless casing tube

API 5CT Seamless casing tube

Name: API SPEC 5CT Seamless Steel Tubes
Applications: It is widely used for oil casing and tubing in oil wells
Models: J55,N80,L80,P110 etc.

Dimension Tolerance:

Types of steel tubesOuter DiameterWall Thickness
Cold-rolled tubesTube sizes(mm)Tolerances(mm)Tolerances(mm)

Mechanical Properties:

Standard codesModels of steel tubesTensite strength(MPa)Yield strength(MPa)Elongation(%)Hardness
API SPEC 5CTJ55≥517379~552check the table




1. Size: OD: 1.05″ to4 1/2 “,  26.87MM to 114.3MM

W.T:2.87 MM TO 16MM
Length: R1,R2,R3
2. Standard & Grade: API 5 CT, H40,J55,L80,N80,T95,P110
3. Certification: API 5CT,CE,ISO9001


1. Size:   OD: 4″ 1/2″ to 20″  114.3MM to 508MM

W.T:5 MM TO 16MM

Length: R1,R2,R3

2. Standard&Grade: API 5 CT, H40,J55,K55,M65,L80,N80,T95,P110






  1. casing people says:

    What is the meaning of well casing pipe in petroleum drilling?

    • admin says:

      Well casing is Steel tubing that is threaded. Pin on bottom and box on top. Terminology: OCTG – oil country tubular goods, API – American petroleum institute
      The pipe is either steel plate that is welded or seamless tube that is formed.
      The well is drilled to a depth that is considered ‘as deep as possible’. Casing is then lowered into the well/hole and cemented in place. At that point you could drill out the casing and continue to go deeper with the casing holding the well bore stable above.

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