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Petroleum OCTG Seamless Line Pipe Casing Tubing API 5CT N80 L80 Pipe ODM

Basic Information
Place of Origin: China
Certification: ISO9001
Packaging Details: In Bundles, Woodenbox As Your Requirement
Detail Information
Name: API 5CT OCTG Casing Tubing N80 L80 Petroleum Pipe With Btc Coupling Keyword: OCTG Casing
Grade: 10#.20#.45#15Mn.20Mn.45Mn.30Mn2 Thickness: 4 - 70 Mm
Length: 12M, 6m, 6.4M Shape: Round
Wall Thickness: 2.11mm-300mm Certificate: API, BIS, PVOC, JIS
Thread: BTC/LTC/STC Material: L245,L360,A53,J55,N80 ,X42,X46,X52,X56,X60,X65,X70
Size: 1.9" - 4-1/2" WT: 5.21MM-16.13MM
Outer Diameter: 4-1/2"-20",114.3mm-508mm Standrad: ASTM, JIS, AISI, ASTM, GB, DIN, EN, Etc
Steel Grade: J55/ K55, N80-1, N80Q, L80,C90, T95, P110 Hot Rolled Specifications: 1500*C/ 1800*C/2000*C
End Protector: Plastic Pipe Cap
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Petroleum Seamless Line Pipe


ODM Seamless Line Pipe


ODM api 5ct n80

Product Description

API 5CT OCTG Casing Tubing N80 L80 Petroleum Pipe with Btc Coupling



Product Name
Seamless Carbon steel pipe
Seamless steel pipe
Outside Diameter
4mm - 914.4mm; 8mm-630mm
Wall Thickness
Dia Tolerance
Control with in the standard, OD:+-1%, WT:+-1%

ASTM A53A/A53B/ A178C/A106B API5L
ST37,ST37-2,DIN 1629 ST35, ST45,DIN 17175 ST35.8,DIN 17175 19Mn5
Steel strip packed. Standard Export Seaworthy Package.Suit forall kinds of transport,or as required

Widely used in Structure, Accessorize,Construction,
Fluid transportation,machinery parts,the stress parts of the automobile
tractor parts and so on
5 ton,sample order accepted
Shipment time
Within 7-10 workdays after receiving deposit or L/C


OCTG is the abbreviation of Oil Country Tubular Goods, it mainly refers to the piping products that are applied in oil and gas production (drilling activities). OCTG pipe is normally manufactured based on API or related standard specifications. It could also be taken as a collective name for Drill pipe, Steel Casing Pipe and Tubing pipe, Couplings, Connections, and Accessories, used in petroleum industries both onshore and offshore.

According to the API (American Petroleum Institute) standardized specifications, through the control of the chemical properties and adopting different heat treatments, OCTG pipe is classified into different performances material with more than ten grades.

Types of Oil Country Tubular Goods (OCTG pipes)
There are three main types of Oil Country Tubular Goods, which include Drill pipe, Casing pipe, and Tubing pipe.

Drill pipe is a heavy, seamless tube that rotates the drill bit and circulates drilling fluid. It allows the drilling fluid to be pumped through the bit and back up the annulus. The pipe can withstand axial tension, extremely high torque and high internal pressure. That is why the pipe is extremely strong and vital in OCTG endeavour.

Drill Pipe normally means the Durable steel pipe used in drilling, standards in API 5DP and API SPEC 7-1.

If you don’t understand the annulus of oil well, it is the space between the casing and the piping or any piping tubing, casing or piping immediately surrounding it. Annulus allows the fluid to circulate in the well. So when we are talking about strong or heavy-duty OCTG pipe, we are talking about Drill pipe.

Steel Casing pipe – Stabilize the wellbore

Steel casing pipes are used to line the borehole that is being dug into the ground to get oil. Just like the drill pipe, the steel pipe casing can also withstand axial tension. This is a large-diameter pipe inserted into a drilled borehole and held into place with cement. The casing is subject to the axial tension of its dead weight, the external pressure of the rock surrounding it, and the internal pressure of the purging fluid. When it is well cemented in place, the drilling process is aided in the following ways:

· Casing sticks the drill string and prevents unstable upper formation from caving in.
· It prevents water well zone contamination.
· It allows a smooth internal bore for installing production equipment
· It prevents contamination of production zones and fluid loss.
· It seals off high-pressure zone from the surface
· And much more

The casing is an extremely heavy-duty pipe vital to OCTG.

OCTG Casing Pipe standard
Steel Casing pipe standards usually referred to API 5CT, Common Grades in J55/K55, N80, L80, C90, T95, P110 etc. Common length in R3 which nominal at 40 ft / 12 meters. Casing pipe ends connection types are usually in BTC and LTC, STC. And premium connections are also required in large quantities in an oil and gas piping project.

Steel Well Casing Pipe Price
Steel Casing Pipe cost is lower than drill pipe or the OCTG tubing cost, it is usually higher 200 USD than the regular API 5L pipe. Considering the Threading + Coupling cost or the heating treatment.

OCTG Tubing Pipe – Transporting Oil and Gas to the Surface Ground
OCTG Tubing pipe goes inside the casing pipe because it is the pipe through which oil makes its way out. Tubing is the simplest part of OCTG and it is normally found in the segment of 30 ft (9 m), with threaded connections at both ends. The pipe is either used to transport natural gas or crude oil from the producing formation to the facilities where it will be processed after drilling is complete.


This tubing must be able to withstand pressure during the extraction process and adequately resist loads and deformations that have to do with production and workovers. Just like casing is manufactured, tubing is also manufactured the same way, but an additional upsetting process is applied to make it thicker.

OCTG Tubing pipe standard
Same as casing pipe standard, OCTG tubing in API 5CT is also in the same material grades (J55/K55, N80, L80, P110 etc), but the tubing’s diameters are up to 4 1/2”, and it ends in various types such as BTC, EUE, NUE, and premium. Most commonly, thickened connections EUE.

Contact Details

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