API 5CT Casing and Tubing for Oil Well Drilling

• Invoicing

  By Actual Weight
  Oiled or Non-oiled

  Non-oiled
• Section Shape

  Round
  Surface Treatment

  Hot Rolled
• Tolerance

  ±1%
  Alloy Or Not

  Non-Alloy
• Application

  Fluid Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Oil Pipe
  Certificate

  API , ISO 9001
• Delivery Time

  8 ~ 14 days
  Grade

  carbon steel
• Outer Diameter

  219 - 1066 mm
  Special Pipe

  API Pipe, Other, EMT Pipe, Thick Wall Pipe
• Standard

  ASTM
  Technique

  Saw

This API 5CT listing covers casing and tubing enquiries for oil well drilling. J55, K55, N80, L80 and P110 are named in the title, but the actual selection entries only distinguish length against a thickness range. A complete order needs a specific tubular role, grade and connection configuration.

Separate the casing or tubing requirement from the grade list

State whether the enquiry concerns casing or tubing and identify one required grade with its full supply condition. The listed names do not demonstrate that every grade is offered in each size, or that different tubular roles can be substituted. Request the selected drawing and material specification.

The table describes carbon steel and non-alloy supply without grade-specific chemistry, treatment or property records. Verify the offered material against the chosen requirement using traceable reports. End configuration and connection designation also need confirmation; there is no connection selection or numerical connection rating in the actual variants.

Verify the selected size and manufacturing evidence

Outside diameter is recorded as 219–1066 mm. Both variants use the 6–20 mm thickness entry, paired with either 12 m or 6 m length. Confirm an exact diameter, wall and length for the selected role rather than accepting those broad ranges as an API 5CT dimensional specification.

Ask how the seamless title relates to Technique Saw and obtain supporting manufacturing records. Define the controlled measurement behind ±1%, plus required dimensional and end inspection. Confirm the hot-rolled, non-oiled and round condition with the applicable API 5CT edition and exact ASTM reference, where relevant.

Assess the well duty with the required records

Specify pressure, temperature, fluid composition, cycling and loading for material and connection assessment. Agree project inspection, testing and rating evidence for the chosen supply. API and ISO 9001 certificate labels require scope and validity checks; the grade list alone provides neither sour-service qualification nor approval for the proposed well conditions.