Are you in the market for high-quality duplex stainless steel pipes? With so many factories in China, choosing the right one can feel overwhelming. Understanding the top manufacturers is crucial, as it can significantly impact your project’s success and cost-effectiveness. By comparing these leading factories, you can ensure you’re getting the best materials, superior craftsmanship, and competitive pricing. Ready to make an informed decision? Dive into our comprehensive comparison of the top duplex stainless steel pipe factories in China and discover the best options for your needs!

Duplex Steel Pipes and Tubes – Sincoo Metal Limited

Product Details: Duplex Steel Pipes and Tubes manufactured by Sincoo Metal Limited.

Technical Parameters:
– Dimensions: OD from 6mm to 610mm; WT from 0.5mm to 40mm.
– Steel Grades: UNS S31500, S32101, S32003, S32304, S31803, S32205, S32707, S32906…

Application Scenarios:
– Used in pipelines and precision tubing.
– Applicable in OCTG (Oil Country Tubular Goods).

Pros:
– High strength and corrosion resistance.
– Versatile dimensions and grades available.

Cons:
– Potentially higher cost compared to standard steel.
– Specialized handling and storage requirements.

Duplex Steel Pipe & Tube

Product Details: Duplex stainless steel pipe generally refers to a steel composed of 50% Ferritic and 50% Austenitic phase structure, providing better strength and excellent pitting corrosion resistance.

Technical Parameters:
– Types: Seamless, Welded
– Parameter: 1/2”~48”, SCH5~SCHXXS

Application Scenarios:
– Marine projects
– Oil & gas exploration

Pros:
– Stronger resistance to seawater corrosion compared to stainless steel 316
– Excellent resistance to pitting corrosion

Cons:
– Suffers from embrittlement if kept at temperatures above 300ºC
– Not suitable for high-temperature applications

DUPLEX STAINLESS STEEL WELDED PIPE

Duplex Stainless Steel Pipe – China Supplier, Wholesale

Product Details: Duplex Stainless Steel Pipe, ASTM A790, ASTM A928, S31803, S32750, S32760, S31254, 254Mo, 253MA

Technical Parameters:
– Material Grade: UNS S32750, S31803, S32205
– Standards: ASTM A790, ASME SA790

Application Scenarios:
– Used in chemical processing plants
– Suitable for desalination plants

Pros:
– High corrosion resistance
– Excellent strength

Cons:
– Higher cost compared to standard stainless steel
– Requires careful handling to avoid damage

EN 1.4462 Duplex Stainless Steel Pipe – Ronsco

Product Details: EN 1.4462 Duplex Stainless Steel Pipe, Type: Welded, Shape: Square / Rectangular / Round, Finish: 2B, Pickling, Polished, Brushed, Sandblast, BA, EP

Technical Parameters:
– Out diameter: 1.9mm – 5000mm or customized
– Thickness: 0.5mm – 80mm or customized

Application Scenarios:
– Chemical, Pharmaceutical & Bio-Medical
– Petrochemical & Refinery

Pros:
– Over 20 years of production experience
– Over 20000 tons of production capacity

Cons:
– Limited information on specific grades
– Potential variability in delivery time

2205 / 2507 Duplex Pipe

Product Details: SAF 2205 Duplex pipe and SAF 2507 Super duplex pipe are high strength and corrosion resistant products suitable for various applications.

Technical Parameters:
– Duplex 2205 (S31803) and Super Duplex 2507 (S32750) pipes conform to ASTM A790,…
– Outer Diameter: 1/2″ to 24″ for seamless pipes; Wall Thickness: 0.3mm to 12mm.

Application Scenarios:
– Chemical process industries
– Oil and gas industry equipment

Pros:
– High strength and corrosion resistance
– Good welding performance

Cons:
– Not intended for use above 300°C due to embrittlement
– More difficult to process than austenitic steel

High-Quality Duplex Stainless Steel Pipes – PGPConnect

Product Details: High-Quality Duplex Stainless Steel Pipes, Corrosion Resistant & Durable

Technical Parameters:
– ASTM A790 UNS S31803
– Various sizes and schedules available

Application Scenarios:
– Oil and gas industry
– Chemical processing

Pros:
– High corrosion resistance
– Durable and long-lasting

Cons:
– Higher cost compared to standard stainless steel
– Requires specific welding techniques

Super Duplex Stainless Steel Pipe – China Supplier, Wholesale

Product Details: Super Duplex Stainless Steel Pipe

Technical Parameters:
– Standard: ASTM, DIN, AISI, EN
– Thickness: Sch10-sch160

Application Scenarios:
– Oil and Gas
– Industry

Pros:
– High corrosion resistance
– Durable and strong

Cons:
– Higher cost compared to standard stainless steel
– Requires specialized welding techniques

Duplex Stainless Steel Pipe – China Supplier, Wholesale

Product Details: Duplex Stainless Steel Pipe, ASTM A789/790, available in sizes 1/8”-12”

Technical Parameters:
– Grade: C≤0.030, Mn≤2.00, Si≤1.00, P≤0.030, S≤0.020, Cr 22.0-23.0, Ni 4.5-6.5, Mo…
– Process: Cold-rolled and cold drawing

Application Scenarios:
– Oil and gas equipment
– Heat exchangers

Pros:
– High strength and corrosion resistance
– Good quality and service

Cons:
– Limited size range
– Potentially higher cost compared to standard stainless steel

Duplex Steel Welded Pipes Stockist, Supplier in China

Product Details: Duplex Steel Welded Pipe, made from a combination of austenitic and ferritic stainless steel, offering high strength and corrosion resistance.

Technical Parameters:
– Outer Diameter: 6.0-630mm
– Thickness: 0.5-45mm

Application Scenarios:
– Used in chemical and petrochemical industries
– Applications in construction for structural frames and piping systems

Pros:
– Higher strength compared to standard stainless steel
– Better corrosion resistance and weldability

Cons:
– Potentially higher cost than standard steel options
– Requires specific welding techniques

Related Video

Comparison Table

Company	Product Details	Pros	Cons	Website
Duplex Steel Pipes and Tubes – Sincoo Metal Limited	Duplex Steel Pipes and Tubes manufactured by Sincoo Metal Limited.	– High strength and corrosion resistance. – Versatile dimensions and grades available.	– Potentially higher cost compared to standard steel. – Specialized handling and storage requirements.	www.sincoometal.com
Duplex Steel Pipe & Tube	Duplex stainless steel pipe generally refers to a steel composed of 50% Ferritic and 50% Austenitic phase structure, providing better strength and exc…	– Stronger resistance to seawater corrosion compared to stainless steel 316 – Excellent resistance to pitting corrosion	– Suffers from embrittlement if kept at temperatures above 300ºC – Not suitable for high-temperature applications	www.htpipe.com
DUPLEX STAINLESS STEEL WELDED PIPE				www.north-steels.com
Duplex Stainless Steel Pipe – China Supplier, Wholesale	Duplex Stainless Steel Pipe, ASTM A790, ASTM A928, S31803, S32750, S32760, S31254, 254Mo, 253MA	– High corrosion resistance – Excellent strength	– Higher cost compared to standard stainless steel – Requires careful handling to avoid damage	www.steelseamlesspipe.com
EN 1.4462 Duplex Stainless Steel Pipe – Ronsco	EN 1.4462 Duplex Stainless Steel Pipe, Type: Welded, Shape: Square / Rectangular / Round, Finish: 2B, Pickling, Polished, Brushed, Sandblast, BA, EP	– Over 20 years of production experience – Over 20000 tons of production capacity	– Limited information on specific grades – Potential variability in delivery time	www.ronscopipe.com
2205 / 2507 Duplex Pipe	SAF 2205 Duplex pipe and SAF 2507 Super duplex pipe are high strength and corrosion resistant products suitable for various applications.	– High strength and corrosion resistance – Good welding performance	– Not intended for use above 300°C due to embrittlement – More difficult to process than austenitic steel	www.kaysuns.com
High-Quality Duplex Stainless Steel Pipes – PGPConnect	High-Quality Duplex Stainless Steel Pipes, Corrosion Resistant & Durable	– High corrosion resistance – Durable and long-lasting	– Higher cost compared to standard stainless steel – Requires specific welding techniques	www.pgpconnect.com
Super Duplex Stainless Steel Pipe – China Supplier, Wholesale	Super Duplex Stainless Steel Pipe	– High corrosion resistance – Durable and strong	– Higher cost compared to standard stainless steel – Requires specialized welding techniques	www.tobo-group.com
Duplex Stainless Steel Pipe – China Supplier, Wholesale	Duplex Stainless Steel Pipe, ASTM A789/790, available in sizes 1/8”-12”	– High strength and corrosion resistance – Good quality and service	– Limited size range – Potentially higher cost compared to standard stainless steel	www.senyusteelpipe.com
Duplex Steel Welded Pipes Stockist, Supplier in China	Duplex Steel Welded Pipe, made from a combination of austenitic and ferritic stainless steel, offering high strength and corrosion resistance.	– Higher strength compared to standard stainless steel – Better corrosion resistance and weldability	– Potentially higher cost than standard steel options – Requires specific welding techniques	www.bestar-pipe.com

Frequently Asked Questions (FAQs)

What is duplex stainless steel, and why is it used in pipes?

Duplex stainless steel is a type of steel that combines both austenitic and ferritic structures, offering high strength and excellent corrosion resistance. It’s commonly used in pipes due to its durability, making it ideal for harsh environments like chemical processing and oil and gas industries.

How do I choose a reliable duplex stainless steel pipe factory in China?

To choose a reliable factory, look for certifications like ISO 9001, check customer reviews, and assess their production capabilities. Visiting the factory or requesting samples can also help ensure quality and reliability.

What are the common applications of duplex stainless steel pipes?

Duplex stainless steel pipes are widely used in various industries, including oil and gas, chemical processing, marine applications, and power generation. Their resistance to pitting and stress corrosion makes them suitable for these demanding environments.

What is the typical lead time for duplex stainless steel pipe orders?

Lead times can vary based on the factory’s production capacity and your order size. Generally, you can expect a lead time of 4 to 12 weeks. It’s best to discuss timelines directly with the factory for accurate estimates.

Are duplex stainless steel pipes more expensive than regular stainless steel pipes?

Yes, duplex stainless steel pipes tend to be more expensive than regular stainless steel due to their enhanced properties and manufacturing processes. However, their long-term durability and lower maintenance costs can make them a cost-effective choice in the long run.