Super Duplex Steel Supplier in India | ASTM A790, A182, A240 Grades
When industries operate in extreme environments - high pressure, corrosive chemicals, seawater, or elevated temperatures - the choice of material becomes critical. This is where Super Duplex Stainless Steel stands out. Known for its exceptional strength and corrosion resistance, it is widely used across oil & gas, marine, chemical, and power industries.
Zeon Exports is a trusted Super Duplex Steel Supplier in India | ASTM A790, A182, A240 Grades, offering premium-quality materials that meet global standards and demanding project requirements.
What Is Super Duplex Stainless Steel?
Super Duplex Stainless Steel is an advanced alloy with a dual-phase microstructure - approximately 50% austenite and 50% ferrite. This balanced structure gives it:
- Very high tensile and yield strength
- Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking
- Superior performance in chloride-rich and aggressive environments
Compared to standard duplex steel, super duplex grades offer higher PREN (Pitting Resistance Equivalent Number), making them suitable for offshore and chemical applications.
ASTM Grades We Supply
As a leading Super Duplex Steel Supplier in India | ASTM A790, A182, A240 Grades, Zeon Exports supplies products strictly as per international ASTM specifications.
ASTM A790 – Pipes & Tubes
ASTM A790 covers seamless and welded Super Duplex Stainless Steel pipes and tubes. These are widely used in:
- Offshore platforms
- Heat exchangers
- Oil & gas transmission lines
- Desalination plants
These pipes offer high pressure-handling capacity and long service life even in harsh conditions.
ASTM A182 – Forged Fittings & Flanges
ASTM A182 super duplex grades are used for forged components such as:
- Flanges
- Valves
- Fittings
- Shafts and couplings
They provide excellent mechanical strength and reliability, making them ideal for high-pressure systems.
ASTM A240 – Plates, Sheets & Coils
ASTM A240 covers flat-rolled products used in fabrication and structural applications. Super duplex plates and sheets are commonly used in:
- Pressure vessels
- Storage tanks
- Chemical processing equipment
- Structural components in marine environments
Why Choose Super Duplex Steel?
Industries choose super duplex steel because it delivers long-term value and safety. Key benefits include:
- High strength – Almost double the strength of austenitic stainless steel
- Outstanding corrosion resistance – Ideal for seawater and chloride exposure
- Cost efficiency – Thinner sections can be used due to higher strength
- Low maintenance – Longer lifespan reduces replacement and downtime
These advantages make it the preferred choice for critical industrial projects.
Applications Across Industries
As an experienced Super Duplex Steel Supplier in India | ASTM A790, A182, A240 Grades, Zeon Exports serves a wide range of sectors:
- Oil & Gas – Offshore platforms, pipelines, risers
- Marine & Shipbuilding – Seawater systems, propeller shafts
- Chemical & Petrochemical – Reactors, heat exchangers, piping systems
- Power & Energy – Desalination plants, thermal and nuclear projects
- Pulp & Paper – Digesters and bleaching equipment
Each product is selected and supplied based on application-specific requirements.
Quality Standards & Testing
Quality is non-negotiable at Zeon Exports. Every super duplex steel product undergoes strict inspection and testing, including:
- Chemical composition analysis
- Mechanical testing (tensile, yield, elongation)
- PMI (Positive Material Identification)
- NDT tests (UT, RT, Hydro)
- Dimensional and visual inspection
Mill Test Certificates (MTC) as per EN 10204 3.1 are provided with every supply.
Why Zeon Exports?
Choosing the right supplier is as important as choosing the right material. Here’s why global buyers trust Zeon Exports:
- Wide stock of ASTM A790, A182, and A240 grades
- Consistent quality with international compliance
- Competitive pricing for domestic and export orders
- Timely delivery and reliable logistics
- Experienced team offering technical support
Whether you need pipes, flanges, plates, or custom-cut components, Zeon Exports ensures smooth execution from enquiry to delivery.
FAQs – Super Duplex Steel
Q1. What is the difference between duplex and super duplex steel?
Super duplex steel has higher alloy content, better corrosion resistance, and greater strength compared to standard duplex steel.
Q2. Are ASTM A790 pipes suitable for offshore use?
Yes, ASTM A790 super duplex pipes are widely used in offshore and subsea applications due to their excellent resistance to seawater corrosion.
Q3. Can Zeon Exports supply custom sizes?
Yes, Zeon Exports can arrange custom sizes, lengths, and specifications based on project requirements.
Q4. Do you provide test certificates?
All materials are supplied with EN 10204 3.1 Mill Test Certificates and additional inspection reports if required.
Q5. Do you export super duplex steel outside India?
Yes, Zeon Exports is an active exporter supplying super duplex steel to multiple international markets.