API 5CT Oilfield Tubing and Casing for Onshore and Offshore Drilling

• After-sales Service: According to The Contract
• Warranty: According to The Contract
• Manufacturing Process: ERW and Seamless
• Model NO.: Customizable
• Surface Treatment: Corrosion Proofing Water Based Paint
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Steel Grade: J55/K55/N80/L80/P110/C95/T95/Q125/etc
• Connect Type: Nu/EU/Stc/Ltc/Btc
• Transport Package: Protection Caps in Both Ends, Waterproof Paper Wra
• Specification: Customized
• Trademark: PETROTEX
• Origin: Jiangsu, China
• HS Code: 73052000
• Production Capacity: 200000tons/Years

Product Description

 API 5CT Tubing & Casing – Reliable Solutions for Oil & Gas Wells

Tubing and Casing are critical OCTG products designed to ensure well integrity, safety, and efficient production in oil and gas operations. 
Manufactured in strict accordance with API 5CT standards,our tubing and casing offer high mechanical strength, excellent pressure resistance, and superior durability, making them suitable for demanding onshore and offshore environments. A full range of steel grades(J55/K55/N80/L80,ETC), PSL1 & PSL2 options, and API or premium connections allows flexible selection based on well depth, pressure, and temperature conditions. For challenging fields, sour service solutions compliant with NACE MR0175 / ISO 15156 are available, providing enhanced resistance to H2S corrosion and extending service life. 
With stable dimensional accuracy, reliable threading performance, and strict quality control, our tubing and casing ensure secure connections, reduced operational risk, and long-term, cost-effective well performance.

Specification

Tubing	OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)
Casin	OD 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)
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
Process	ERW and Seamless
Standard	API 5CT
Surface	Corrosion proofing water based paint
Tubing Ends	Beveled, Square Cut, With NUE/EUE/IJ/PREMIUM Connection
Casing Ends	Beveled, Square Cut, With LTC/STC/BTC/PREMIUM Connection
Packing	Protection Caps in Both Ends, Waterproof Paper Wrapped, Two Tags
Heat treatment	Normalized, Quencher+Temper

Product Advantage

Advantages of Tubing

Provides a direct and efficient flow path for oil, gas, and injected fluids from the reservoir to the surface
Easy to install, retrieve, and replace, reducing well intervention time and operating costs
Available in multiple diameters and wall thicknesses to optimize production rates
Compatible with artificial lift systems such as rod pumps, ESPs, and gas lift
Manufactured with high-strength steel grades for pressure and temperature resistance
Can be supplied with corrosion-resistant materials (13Cr, stainless steel, special alloys) for sour or corrosive wells
High-performance thread connections ensure excellent sealing and leak prevention

Advantages of Casing

Provides structural support to the wellbore and prevents formation collapse
Isolates different geological formations and controls well pressure
Protects freshwater zones from contamination
Enables safe drilling and completion in complex geological conditions
Available in a wide range of sizes, wall thicknesses, and steel grades
Suitable for high-pressure, high-temperature (HPHT) and deep-well applications
Can be cemented in place to ensure long-term well integrity

Application

Applications of Tubing

Applications of Casing

Oil and gas production wells

Shale gas and unconventional resource wells

Deep and ultra-deep wells

Offshore oil and gas platforms

Wells requiring frequent workover or tubing replacement

Wells using artificial lift or injection systems

Surface casing for wellhead and shallow formation protection

Intermediate casing for pressure control and formation isolation

Production casing for long-term oil and gas production

Liner casing to reduce material cost in deep wells

Onshore and offshore oil and gas drilling projects

Conventional and unconventional oil and gas fields

Production Process

Tubing and Casing Manufacturing Process

Certification

Our Services

Professional Team Service

1.24-hour online
2.Support customization
3.Multiple payment styles to choose from
4.Factory inspection (material, specifications, quantity, pressure)
5.Long warranty period
6.Suitable packaging for transportation

FAQ

FAQ For Tubing And Casing

Q1: What is the main difference between Tubing and Casing?

A1:Casing is installed in the wellbore during drilling to support the well structure, prevent collapse, isolate formations, and protect freshwater zones. Tubing is run inside the casing after well completion and serves as the primary conduit for transporting oil and gas from the reservoir to the surface during production.

Q2: What standards do Tubing and Casing comply with?

A2:Tubing and Casing are typically manufactured in accordance with API 5CT standards. Upon request, products can also meet additional international or customer-specific requirements, including special inspection, testing, and certification.

Q3: What steel grades are commonly available for Tubing and Casing?

A3:Common steel grades include J55, K55, N80, L80, P110, C95, T95, and Q125. For corrosive or sour service environments, corrosion-resistant options such as 13Cr, stainless steel, and special alloy grades are also available.

Q4: What connection types can be supplied?

A4:Tubing and Casing can be supplied with API connections such as NU, EU, STC, LTC, and BTC, as well as premium connections featuring metal-to-metal sealing for high-pressure and high-temperature applications.

Q5: How do customers select the correct Tubing and Casing for a well?

A5:Selection depends on well depth, pressure, temperature, production rate, and environmental conditions. Key factors include pipe size, wall thickness, steel grade, and connection type. Technical support is usually provided to help customers choose the most suitable solution.

Q6: Can Tubing and Casing be used in offshore and corrosive environments?

A6:Yes. Tubing and Casing are widely used in onshore and offshore oil and gas fields, including deepwater and corrosive environments. With appropriate material selection, corrosion-resistant alloys, and premium connections, they can ensure long-term well integrity and safe operation.

Company Profile

                     

                        15+ years of manufacturing experience
 
           Shanghai Baori Steel Industries Co., Ltd
 
                       Professional, efficient and good service
                          Do things sincerely, connect the world

Our main business field is the manufacturing, Processing and distributing of silicon steel product. Our company main product including Hot dip aluminized steel coil/plate,stainless steel,galvanized steel,channel steel,rebar,pipe,etc...
We have more than 15+ years of manufacturing experience and 20 years of domestic market. We have customized production capacity. We have more than 20 employees and the factory covers an area of more than 8,000 square meters. Year capacity up to 100, 000 Tons.
We are also agent of Baosteel, Wisco, Shougang Group, Shagang, An steel. Tisco etc.  We have best supply chain and competitive price, will match different quality and price level requirement.   Now our clients throughout the world and areas in MID-east, Africa, South-America, Southeast Asia, Latin-America, Europe etc...