API 5CT Seamless Steel Pipe, Oilfield Specification Complete Range of Sizes

Product Description

Product Description

Oil casing pipe for petroleum equipment

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	Oil Casing And Tubing
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
Surfacr Treatment	Corrosion proofing water based paint
Package	Protection Caps in Both Ends, Waterproof Paper Wrapped, Two Tags
Heat Treatment	Normalized, Quencher+Temper
Applicable Environment	Conventional oil and gas wells, deep wells, ultra-deep wells, and highly sulphurous/highly saline corrosive environments (H2S/CO2)
HS code	73052000

Product Advantage

Key Advantage

1. High Strength & Structural Integrity
Manufactured from premium carbon or alloy steel, exhibiting exceptional tensile, compressive and crush resistance.
Suitable for deep wells, ultra-deep wells and complex geological conditions, ensuring long-term stable operation of oil wells.

2.Outstanding Corrosion Resistance | Excellent Corrosion Resistance
Available grades include L80 (13Cr), C90, T95 and other sulphur-resistant steels, suitable for sour service environments containing H₂S and CO₂.
Supports FBE coating, 3PE anti-corrosion, and galvanised finishes to extend service life and reduce maintenance costs.

3. Full Compliance with API & ISO Standards
Strict adherence to API  5CT and ISO standards.
All products bear API certification , suitable for global oilfield projects, facilitating seamless customs clearance and acceptance for customers.

Production Showcase

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 

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.

Our 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.

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.