Oil Well Casing Pipe API 5CT J55 K55 N80 Seamless Steel Tube

• After-sales Service: According to Contract
• Warranty: 1 Year
• Certification: API5CT GOST ISO14001
• Model NO.: customized
• Applicable Medium: Natural Gas, Crude Oil
• Structure: Plug-In
• Material: Stainless Steel
• Tubing Od: 2 3/8''-4 1/2''
• Casing Od: 4 1/2''-20''
• Wall Thickness: 0.205''-0.635''
• Length: R1, R2, R3
• Standard: API5CT
• Transport Package: Waterproof Paper Wrapped
• Specification: Customized
• Trademark: Baori Steel
• Origin: China

Product Description

Product Description

API  Oil Tubing and Casing

Casing is a critical tubular component in cementing operations for oil and gas wells, serving to support the wellbore, isolate formations, and ensure drilling and production safety. Manufactured from high-strength alloy steel, the product exhibits outstanding resistance to crushing, corrosion, and sealing performance, making it suitable for high-pressure, high-temperature, and complex geological conditions. Strict adherence to American Petroleum Institute standards guarantees dimensional accuracy and connection reliability, enabling its widespread application in onshore and offshore oil and gas development.

Product Details

Product Name	Oil Tubing and Casing
Standard	API5CT
Tubing Outer DIameter	2 3/8''-4  1/2''(60.3mm-114.30mm)
Casing Outer Diameter	4 1/2 ''-20''(114.30mm-508mm)
Wall Thickness	0.205''-0.635''
Length	R1(4.88mm-7.62mm)   R2(7.62mm-10.36mm)   R3(10.36mm-longer)
Steel Grade	J55/K55/N80/L80/P1 10/C95/T95/Q125/L80-13CR/P110- 13CR/80S/80SS/95S/ 95SS/P110S/P110SS
Connection Type	NU/EU/IJ/STC/BTC/LTC/PREMIUM CONNECTION
Surface Treatment	Corrosion proofing water based paint
Packing	Protection Caps in Both Ends, Waterproof Paper Wrapped, Two Tags
HS Code	73052000

Product Advantage

Core Feature

1.Petroleum casing is manufactured using high-quality seamless hot-rolled processes, featuring uniform microstructure and superior mechanical properties to effectively safeguard wellbore integrity.

2.The product strictly adheres to the API international standard.

3.Offering high-corrosion-resistant grades such as L80 and C90, suitable for demanding conditions including hydrogen sulphide-bearing environments, high-pressure operations, and deep wells.

4.Combined with precision  threading and comprehensive non-destructive testing throughout the production process, each casing ensures reliable connections and tight seals, providing robust support for the safe and efficient development of oil and gas wells.

Production Process

Company Profile

Shanghai Baori Steel Industries Co.,Ltd

Our company 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

Our Core Advantage

1.We operate four factories with four production lines for casing and tubing threading, boasting an annual production capacity of approximately 200,000 tonnes and a stable supply capability.

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

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

4.We possess a comprehensive product specification system, enabling us to swiftly fulfil order requirements.

Certifications

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 is the difference between American Petroleum Institute threads and special threads?
A: American Petroleum Institute threads (e.g., STC, BC) offer cost-effective versatility; special threads provide superior sealing, tensile strength, and torsional resistance, suitable for high-pressure gas wells or complex well conditions.
 
Q: What key parameters are required when ordering casing?
A: Outer diameter, wall thickness, steel grade, thread type, length, and quantity. Specify whether American Petroleum Institute compliance is required.
 
Q: How to determine if casing quality meets standards?
A: Verify American Petroleum Institute certification marks and third-party inspection reports. Inspect physical markings, dimensional accuracy, thread machining quality, and non-destructive testing records.