API5CT Casing Pipe-Seamless Steel Casing for Oilfield Drilling, Mill Test Certificate Available

• After-sales Service: According to Contract
• Warranty: 1 Year
• Certification: ISO 9001:2000
• Model NO.: customisation
• Applicable Medium: Natural Gas, Crude Oil
• Material: Steel
• Tubing Outer Diameter: 60.3mm-114.30mm
• Casing Outer Diameter: 114.30mm-508mm
• Wall Thickness: 0.205''-0.635''
• Standard: API5CT
• Length: R1,R2,R3 or Customization
• Steel Grade: J55/K55/N80/L80/P1 10/C95/T95/Q125/L80-13cr/P110
• Transport Package: Protection Caps in Both Ends, Waterproof Paper
• Specification: Customized
• Trademark: Baori Steel
• Origin: China

Product Description

Product Description

API Oil Tubing and Casing

We supply seamless tubing and casing compliant with internationally recognised standards, encompassing carbon steel (J55, L80, P110) and corrosion-resistant alloys (Super 13Cr, 22Cr), suitable for conventional and demanding oil and gas well environments including high Co₂ and HPHT conditions. Our products feature high strength, superior corrosion resistance, and reliable sealing performance. They are available in multiple specifications (2-3/8" to 13-3/8"), wall thicknesses, and special thread connections . Material certificates  are provided to ensure safe and efficient well completion.

Specification

Product Name	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 or longer)
Steel Grade	J55/K55/N80/L80/P110/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

Our Core Advantage

1.Authoritative Certification

Strictly compliant with API internationally recognised standards.

2.Full Material Coverage

Offering carbon steel (J55/L80/P110) and corrosion-resistant alloys (Super 13Cr, 22Cr etc.), suitable for diverse conditions from conventional wells to high CO₂, HPHT, and low-sulphur environments.

3.High Reliability

Utilising seamless hot-rolled + precision heat treatment processes, ensuring high strength, high toughness and uniform microstructure, effectively resisting corrosion, stress cracking and crushing.

4.Superior Sealing Performance

Supports special threads (BTC, LTC) and premium special threads, achieving gas-tight sealing to safeguard wellbore integrity.

5.Flexible Customisation

Comprehensive specifications (OD 2-3/8' to 13-3/8', selectable wall thicknesses) with support for custom lengths, special coatings, and inspection reports .

6.Global Delivery Capability

Consistent bulk supply with comprehensive quality assurance documentation , accommodating FOB/CIF terms, serving major oil and gas markets including the Middle East, Americas, and Asia-Pacific.

Production Process

Company Profile

Shanghai Baori Steel Industries Co,ltd

Our company is located in Shanghai Baoshan ,situated near the Port of Shanghai, offering convenient transport links.
We possess over 15 years of experience in steel production and manufacturing, and operate our own factory, enabling us to fulfil bespoke requirements for our clients.
Meanwhile, our export operations continue to expand. To date, we have exported to over 50 countries and regions, supported by a well-established export process system. Furthermore, our product quality has garnered consistent acclaim from our customers.

Why Chose Us!

1.We operate our own manufacturing facilities, enabling us to meet production requirements and fulfil bespoke client specifications.
2.We operate four casing threading lines with an annual production capacity of 200,000 tonnes.
3.Our proprietary special buckle technology, protected by technical patents, enables us to secure a position in the global market.
4.To ensure product quality meets standard requirements, the company has established stricter internal control standards based on API specifications. Thread parameters exceed American Petroleum Institute standards by over 20%, with 100% coverage in inspection frequency.

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 API threads and special threads?
A: API  threads  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. 
 
Q: How to determine if casing quality meets standards?
A: Verify American Petroleum Institute threads offer cost-effective versatility; special threads provide superior sealing, tensile strength, and torsional resistance, suitable for high-pressure gas wells or complex well conditions. certification marks and third-party inspection reports. Inspect physical markings, dimensional accuracy, thread machining quality, and non-destructive testing records.