UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes
Manufacturers and suppliers of UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes (Duplex 2205), engineered for demanding and highly corrosive service environments in offshore platforms, oil & gas facilities, chemical processing plants, desalination systems, and marine infrastructure.
UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes
Our UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes (Duplex 2205)
are manufactured from a high-performance duplex stainless steel that combines the
strength of ferritic steel with the corrosion resistance of austenitic steel. This
balanced microstructure provides outstanding resistance to stress corrosion cracking,
pitting, and crevice corrosion, making these tubes ideal for high-pressure and
high-temperature service in aggressive environments.
The seamless, precision-engineered construction ensures uniform wall thickness and
smooth internal surfaces, enabling efficient fluid flow and precise control in
critical hydraulic, pneumatic, and sensitive instrumentation systems. These tubes
maintain excellent dimensional stability and mechanical integrity under cyclic
loading, vibration, and fluctuating pressure conditions.
Commonly used in chemical processing plants, oil & gas facilities, offshore platforms,
marine systems, desalination units, and heavy industrial infrastructure, our
UNS S2205 stainless steel seamless tubes are produced and tested to international
standards to deliver a long-lasting, reliable, and cost-effective solution for
demanding service applications.
Comprehensive Global Reach
Our UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes are trusted across major industrial cities in India, including Mumbai, Chennai, Pune, Ahmedabad, and Hyderabad. These duplex-grade tubes support chemical processing plants, refineries, power generation facilities, and heavy engineering projects that demand high strength and superior corrosion resistance.
Throughout the Middle East, we supply the UAE (Dubai, Abu Dhabi, Sharjah, Ajman, Al Ain, and Ras Al Khaimah), Saudi Arabia, Qatar (Doha), Kuwait, Oman, Bahrain, Iraq, Jordan, Lebanon, Yemen, Syria, Azerbaijan, and Georgia. Our UNS S2205 seamless tubes are widely used in oil & gas operations, desalination plants, offshore platforms, water treatment facilities, and large EPC infrastructure projects operating in aggressive and saline environments.
Europe, Africa, Americas & Asia-Pacific
In Europe, our tubes are supplied to Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), France, Turkey, Greece, Austria, Russia, Ukraine, and Kazakhstan. Across Africa, the Americas, and the Asia-Pacific region— including Morocco, Algeria, Egypt, Nigeria, Kenya, South Africa, the United States, Canada, Brazil, Argentina, Mexico, Sri Lanka, Malaysia, Singapore, the Philippines, Thailand, Vietnam, and Australia—our UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes support offshore facilities, chemical plants, marine systems, mining operations, and high-pressure industrial infrastructure.
Commitment to Quality
Wherever you operate—Doha, Dubai, London, Moscow, New York, Houston, Singapore, or Sydney—Seminox Pipes & Tubes delivers premium-quality UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes, manufactured and certified to international standards to ensure full material traceability, dimensional accuracy, and long-term reliability in critical, pressure-sensitive, and corrosion-intensive hydraulic and instrumentation applications worldwide.
Key Features of UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes
High-Strength Duplex Microstructure
The dual-phase austenitic-ferritic structure of Duplex 2205 delivers significantly higher mechanical strength than conventional austenitic grades, enabling thinner wall designs while maintaining excellent pressure-bearing capacity in demanding hydraulic and instrumentation systems.
Outstanding Resistance to Stress Corrosion Cracking
Engineered for chloride-rich and aggressive environments, UNS S2205 provides superior resistance to stress corrosion cracking, pitting, and crevice corrosion in marine, offshore, and chemical processing applications.
Precision Seamless Manufacturing
Manufactured using advanced cold drawing and seamless forming techniques to achieve uniform wall thickness, tight dimensional tolerances, and smooth internal surfaces for reliable fluid flow and accurate instrumentation performance.
Smooth Bore for Stable Flow Control
Finely finished internal surfaces reduce friction and pressure loss, ensuring consistent, stable flow and precise measurement in sensitive process control and instrumentation systems.
Excellent Fabricability & Weldability
Designed for efficient welding and forming with proper procedures, allowing streamlined fabrication, installation, and maintenance without compromising the duplex structure or corrosion resistance.
Long Service Life in Aggressive Environments
Delivers extended durability and reduced maintenance in offshore platforms, desalination plants, chemical processing facilities, marine systems, and high-pressure industrial infrastructure operating in highly corrosive and saline conditions.
Product Specification – UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes
UNS S2205
Duplex 2205
ASTM A789 – Duplex Stainless Steel Tubing for General Service
ASME SA790 / SA789
EN 10216-5 (Seamless Precision Tubes)
EN 10297-2
DIN EN ISO 1127
NACE MR0175 / ISO 15156 (Sour Service Compliance, when required)
Customer Drawings & EPC / Project Specifications
Custom cut lengths as per Project / Instrumentation Requirements
Polished (180 / 240 / 320 / 400 / 600 Grit), Electropolished
Tensile Strength: 620–880 MPa
Elongation: ≥ 25%
High Strength with Excellent Resistance to Stress Corrosion Cracking & Pitting
Manufacturing, Testing & Quality Assurance – UNS S2205 Stainless Steel Tubes
Advanced Manufacturing
UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes (Duplex 2205) are manufactured using precision cold drawing and cold rolling processes, followed by controlled solution annealing and pickling or bright annealing to preserve the balanced austenitic–ferritic microstructure. This process ensures high mechanical strength, excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, along with superior surface finish and tight dimensional tolerances for reliable performance in aggressive, high-pressure, and saline service environments.
Inspection & Testing
Each tube undergoes rigorous quality control, including Eddy Current Testing (ECT), Hydrostatic or Pneumatic Pressure Testing, Positive Material Identification (PMI), chemical composition verification, mechanical property testing, dimensional inspection, and 100% visual examination. Testing is carried out in accordance with ASTM A789, ASTM A790, ASME SA789 / SA790, and relevant EN standards to ensure safe, consistent, and reliable performance in offshore, oil & gas, chemical processing, marine, desalination, and industrial infrastructure applications.
Certifications & Compliance
Manufactured and certified in compliance with ASTM A789, ASTM A790, ASME SA789, ASME SA790, EN 10216-5, EN 10297-2, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, PED 2014/68/EU, and NACE MR0175 / ISO 15156 (for sour service applications, when required). Tubes are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates (MTC), ensuring full traceability, regulatory compliance, and acceptance for EPC, offshore, marine, petrochemical, desalination, and heavy industrial projects worldwide.
Typical Applications of UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes
Need UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes for Your Project?
Partner with Seminox Pipes & Tubes for certified, project-ready UNS S2205 Stainless Steel Seamless Hydraulic & Instrumentation Tubes (Duplex 2205) manufactured to international standards and supplied with EN 10204 3.1 / 3.2 Mill Test Certificates. Trusted worldwide for offshore platforms, oil & gas facilities, chemical processing plants, desalination systems, marine infrastructure, and industrial projects requiring superior corrosion resistance, high mechanical strength, and long-term reliability in critical hydraulic and instrumentation service environments.