API 5CT Oil Casing Pipe J55/N80 Steel Grade for Oilfield Drilling

• After-sales Service: According to Contract
• Warranty: 1 Year
• Certification: ISO 9001:2000
• Model NO.: API
• Applicable Medium: Natural Gas, Crude Oil
• Structure: Plug-In
• Material: Steel
• Tubing Outer Diameter: 2 3/8" - 4 1/2" (60.3mm-114.30mm)
• Sheel Outer Diameter: 4 1/2"- 20" (114.3mm-508mm)
• Wall Thickness: 0. 205"- 0.635"
• Length: R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.3
• Grade: J55/K55/N80/L80/P110/C95/T95/Q125/L80-13cr/P110-
• Standard: API5CT
• Connection Type: Nu/EU/Ij/Stc/Btc/Ltc/Premium Connection
• Transport Package: Standard Packaging
• Specification: customized
• Trademark: Baori Steel
• Origin: China

Product Description

Product Description

API5CT Tubing and casing  specifically manufactured for the petroleum industry

Our company specializes in manufacturing a full range of offshore drilling annular seal systems compliant with API 5CT international standards . These systems serve as critical core equipment for deepwater and ultra-deepwater oil and gas exploration and development. Constructed from high-strength low-alloy steel, our products feature optimized fatigue resistance and vortex-induced vibration design, significantly enhancing service life and operational safety margins under severe sea conditions. We provide comprehensive solutions ranging from individual risers, expansion joints, and lower assemblies to fully integrated systems, offering customized designs and configurations tailored to specific platform models and operating water depths.

Specification

Product name	Seamless Oil Casing and Tubing
Standard	API5CT
Material Grade	J55/K55/N80/L80/P1 10/C95/T95/Q125/L80-13CR/P110- 13CR/80S/80SS/95S/95SS/ P110S/P110SS
Tubing outer Diameter	2 3/8" - 4 1/2" (60.3mm-114.30mm)
Casing Out Diameter	4 1/2"- 20" (114.3mm-508mm)
Wall Thickness	0. 205"- 0.635"
Length	R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr or longer)
Connection Type	NU/EU/IJ/STC/BTC/LTC/PREMIUM CONNECTION
Heat Treatment	Normalized
SUrface Treatment	Anti-corrosion water-based paint
HS code	73052000

Product Details

Product Advantage

Core advantage

1. Safe and Reliable, Ensuring Wellbore Integrity

Using carefully selected high-quality steel, manufactured and tested strictly according to international standards.

2. Superior Performance, Adaptable to Harsh Working Conditions
Providing multiple steel grades including J55, N80, L80, and P110, super 13cr casing  and high-performance special threads can be provided upon request.

3. Economical and Efficient, Optimizing Project Costs
Precise dimensional control and excellent thread processing quality ensure smooth on-site threading, reducing operation time and risks.

4. Stable Supply, Professional and Fast Service

We have a mature production system and inventory capacity, ensuring a stable and timely supply of goods.

Certifications

Quality control system

To ensure product quality meets standard requirements, the company has established stricter internal control standards based on API specifications. Thread parameters exceed API standards by over 20%, with 100% inspection coverage, guaranteeing superior performance products are delivered to customers.

Company Profile

Our information

Shanghai Baori Steel Industries Co.,Ltd is located in Shanghai Baoshan region,near by the Shanghai port ,transportation is extremely convenient.
Our company has 15+ years of experience in steel production and export,we have been exported over 50 countries  and our products are widely used in various scenarios, and their quality has earned consistent praise from customers both domestically and internationally.
And we have our own factory ,3 production line,high production capacity.

Quality and service come first!

Why Chose us!

1.First , we have four own-factory,a total of four casing threading lines,annual production is approximately 200,000 tonnes.Our supply capacity is stable.

2.We have independently developed non-API standard products, which have been certified by authoritative bodies and recognised by end users.

3.Possessing its own production and R&D centre, testing laboratories and inspection equipment provides a robust guarantee for product quality.

4.Obtained API 5CT, ISO 9001, GOST, ISO 14001 and other system certifications, along with network access permits from major international oilfields.

FAQ

IF YOU HAVE OTHER QUESTION,PLEASE CONTACT US!

Q: What is the primary function of oil casing?
A: To support the wellbore walls, isolate formations, prevent blowouts, and establish a secure pathway for oil and gas extraction.
 
Q: How should one select the appropriate casing steel grade?
A: Selection depends on well depth, formation pressure, and corrosive environment. Common grades include N80 (general conditions), L80 (corrosive environments), and P110 (deep wells with high pressure).
 
Q: What key parameters are required when ordering casing?
A: Outer diameter, wall thickness, steel grade, thread type, length, and quantity. 
 
Q: How to determine if casing quality meets standards?
A: Verify  certification marks and third-party inspection reports. Inspect physical markings, dimensional accuracy, thread machining quality, and non-destructive testing records.