Womic Stainless Steel Co., Ltd
Womic Stainless Steel Co., Ltd is a leading manufacturer, supplier, and exporter of Duplex Stainless Steel Tubes, offering both seamless and welded tubes that comply with major international standards such as ASTM, ASME, EN, DIN, JIS, and GOST.
Duplex stainless steel combines the advantages of both austenitic and ferritic stainless steels, providing excellent corrosion resistance, high strength, and superior stress corrosion cracking resistance. This makes it an ideal choice for highly corrosive environments such as offshore, chemical, and desalination industries.
Our Duplex and Super Duplex Stainless Steel Tubes are manufactured using advanced cold-drawing, TIG welding, and heat treatment processes to ensure optimal mechanical performance, corrosion resistance, and surface quality.
ASTM / ASME:
ASTM A789 / A789M–Seamless and Welded Duplex Stainless Steel Tubing
ASTM A790 / A790M–Seamless Duplex Pipes
ASTM A928–Welded Ferritic/Austenitic Stainless Steel Pipe
EN / DIN:
EN 10216-5–Seamless Tubes for Pressure Purposes
EN 10217-7–Welded Tubes for Pressure Purposes
DIN 17456 / 17458–Stainless Steel Tubes
JIS: JIS G3463
GOST: GOST 9941 / 9940
Category UNS No. EN / DIN Common Name
Duplex Stainless Steel S31803 1.4462 2205
Super Duplex Stainless Steel S32750 1.4410 2507
Super Duplex Stainless Steel S32760 1.4501 Zeron 100
Lean Duplex Stainless Steel S32101 1.4162 2101
Lean Duplex Stainless Steel S32205 1.4462 SAF 2205
Super Austenitic Alternative N08926 1.4529 6Mo (254 SMO)
All materials are supplied in solution annealed and pickled condition, ensuring optimal corrosion resistance and surface integrity.
Outside Diameter (OD): 6 mm–630 mm (1/8"–24")
Wall Thickness (WT): 0.5 mm–50 mm (SCH 5S to SCH XXS)
Length: Up to 12 meters (Fixed or Random)
Type : Seamless / Welded / ERW / EFW
Surface Finish: Annealed & Pickled, Polished (180#, 240#, 320#, 400#), Bright Annealed (BA), Mirror Finish
Ends: Plain End (PE), Beveled End (BE), Threaded End (TE)
Tolerances: As per ASTM A999 / EN ISO 1127
Duplex Stainless Steel Tubes are widely used in industries that demand high strength, excellent corrosion resistance, and long service life in aggressive environments.
Typical applications include:
Oil & Gas Industry: Flowlines, risers, and offshore piping systems.
Chemical & Petrochemical Plants: Heat exchangers, reactors, and pressure vessels.
Desalination Plants: Seawater cooling and brine lines.
Pulp & Paper Industry: Bleaching equipment and digesters.
Power Generation: Boiler feedwater systems and condensers.
Marine Engineering: Shipbuilding, offshore platforms, and subsea pipelines.
Structural & Mechanical Applications: High-stress and fatigue-resistant components.
With their high yield strength (approximately twice that of austenitic grades) and excellent chloride resistance, Womic duplex tubes offer superior performance in harsh conditions such as seawater, acids, and alkaline environments.
Womic Stainless Steel Co., Ltd has established itself as a trusted global supplier of Duplex and Super Duplex Stainless Steel Tubes with strong manufacturing capabilities and strict quality assurance.
Full Range of Duplex Grades
Comprehensive supply of Lean Duplex (2101, 2202), Standard Duplex (2205), and Super Duplex (2507, Zeron 100) materials.
International Standard Compliance
Products meet or exceed ASTM, EN, DIN, JIS, and GOST specifications for industrial-grade stainless steel tubes.
Advanced Manufacturing & Testing
Every tube undergoes PMI testing, hydrostatic testing, ultrasonic and eddy current inspection, and dimensional verification—supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.
Custom Engineering Solutions
Tailor-made sizes, tolerances, and surface finishes for special project requirements.
Quality Assurance & Certifications
ISO 9001 certified production, third-party inspection available from SGS, TUV, BV, and Lloyd’s Register.
Competitive Pricing & Fast Delivery
Large inventory and flexible production scheduling to ensure on-time global delivery and cost-effective supply.
Looking for a reliable manufacturer and exporter of Duplex Stainless Steel Tubes?
Contact Womic Stainless Steel Co., Ltd for professional support, competitive prices, and high-quality stainless steel solutions.
Tel: 0086-18390957568
Whatsapp: 0086-15575100681
E-mail:info@womicstainless.com
Website: www.womicstainless.com
