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What are OCTG products

Sir, can I have you products catalog regarding OCTG?---It is one of top three question from inquires we have got. You may not notice that how obscure and abstract your question is. As a reliable steel pipes and tubes supplier, we have to say an E-mail or one article could not explain clearly. In the following, I will try to elaborate the OCTG products in a simple and easy way to help you understand better.

OCTG Products for Sale

What is OCTG - Oil Country Tubular Goods?

The term Oil Country Tubular Goods describes tubes that are used in oil and gas production: As a rule these include drill pipe, casing and tubing.

Oil Country Tubular Goods are used both onshore and offshore. OCTG is a family of seamless rolled products consisting of drill pipe, casing and tubing subjected to loading conditions according to their specific application.

  • Drill pipe is heavy seamless tube that rotates the drill bit and circulates drilling fluid. Pipe segments 30 ft (9m) long are coupled with tool joints. Drill pipe is simultaneously subjected to high torque by drilling, axial tension by its dead weight, and internal pressure by purging of drilling fluid. Additionally, alternating bending loads due to non-vertical or deflected drilling may be superimposed on these basic loading patterns.
  • Casing pipe lines the borehole. It is subject to axial tension by its dead weight, internal pressure by fluid purging, and external pressure by surrounding rock formations. Casing is particularly exposed to axial tension and internal pressure by the pumped oil or gas emulsion.
  • Tubing is pipe through which the oil or gas is transported from the wellbore.
OCTG Products Dimension
Tubing Standard API SPEC 5CT
Steel Grade J55, K55, N80, L80, C90, T95, P110
Dimension 1.9"--4 1/2"
Connection NUE, EUE
Casing Standard API SPEC 5CT
Steel Grade J55, K55, N80, L80, C90, T95, P110, Q125, V150
Dimension 4 1/2"--20"
Connection BTC, STC, LTC, TPCQ , Exchange premium thread (Vam&vam top, Hunting )
Pipe Line Standard API SPEC 5L
Chemical Composition of API 5CT
Grade C≤ Si≤ Mn≤ P≤ S≤ Cr≤ Ni≤ Cu≤ Mo≤ V≤ Als≤
API 5CT J55 0.34-0.39 0.20-0.35 1.25-1.50 0.020 0.015 0.15 0.20 0.20 / / 0.020
API 5CT K55 0.34-0.39 0.20-0.35 1.25-1.50 0.020 0.015 0.15 0.20 0.20 / / 0.020
API 5CT N80 0.34-0.38 0.20-0.35 1.45-1.70 0.020 0.015 0.15 / / / 0.11-0.16 0.020
API 5CT L80 0.15-0.22 1.00 0.25-1.00 0.020 0.010 12.0-14.0 0.20 0.20 / / 0.020
API 5CT J P110 0.26-035 0.17-0.37 0.40-0.70 0.020 0.010 0.80-1.10 0.20 0.20 0.15-0.25 0.08 0.020
Mechanical Properties of API 5CT
Steel Grade Yield Strength (Mpa) Tensile Strength (Mpa)
API 5CT J55 379-552 ≥517
API 5CT K55 ≥655 ≥517
API 5CT N80 552-758 ≥689
API 5CT L80 552-655 ≥655
API 5CT P110 758-965 ≥862

Corrosion resistance under sour service conditions is a very important OCTG characteristic, especially for casing and tubing.

Why Choose Us?

AGICO supplies a full range of high quality casing and tubing, drill pipe, line pipe and pipe fittings & flanges and well completion activities. We accompany our products with services, based on our expertise of material selection and pipe handling. Thanks to our state-of-the-art, fully-integrated manufacturers, we produce steel pipe from 1 1/3" to 28" (outside diameters). Our casing and tubing pipes are manufactured according to API grades and also in proprietary grades including sour, high collapse, chrome and CRA products for special applications. Our proprietary grades allow us to offer the best solutions for each customer’s particular well conditions.

Quality Certification

Our integral product offer combines casing and tubing with our complete range of TenarisHydril premium connections. Through the Tenaris global network of manufacturing facilities and threading shops, we are able to ensure flexible delivery terms and an outstanding ability to respond to changes in the schedule of operations.

All of our tubular products are manufactured to the most exacting quality standards. We hold a global ISO 9001 registration for our operations, which follow a uniform quality policy and apply a rigorous quality management system.

If you are interested in other  OCTG products, please click - L80.

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