Super Duplex Steel S32750 S32760 Needle Valve Manufacturer in India
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Kalpataru Piping Solution is a known seller and manufacturer of Super Duplex Steel S32750 Needle & Gauge Valves / Super Duplex Steel S32760 Needle & Gauge Valves, which contain a higher level of Nickel giving it an improved corrosion resistance. Super Duplex Steel S32750 Bar Stock Needle & Gauge Valves in different sizes and shapes that are being designed as per the national and international standard quality of raw materials. Super Duplex Steel S32760 High Pressure Needle & Gauge Valves is a high-alloy grade with elevated chromium (24–26%), molybdenum (3–5%) and nitrogen content making the steel more appropriate for use in functions where high temperatures are at hand. Meanwhile, these Super Duplex Steel S32750 Angle Needle & Gauge Valves lends itself well for their usage in the gas, chemical and petrochemical industry.
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Our Super Duplex Steel S32760 Miniature Needle & Gauge Valves can be offered in customized length sizes and shapes, and are available at market leading prices. Super Duplex Steel S32750 Screwed Bonnet Needle & Gauge Valves can also be fabricated and machined to meet up the piping needs of our clients.Super Duplex is a DUPLEX (ferritic-austenitic) alloy, not austenitic. Correct to: “Super Duplex Steel S32760 Forged Valves are a ferritic-austenitic (duplex) alloy offering superior chloride stress-corrosion resistance versus standard austenitic grades.and are the most widely used varieties of stainless plate. S32750 is rated for cryogenic to ~300°C continuous. Replace: “UNS S32750 Union Bonnet valves offer excellent fatigue resistance and maintain mechanical strength across cryogenic to 300°C service temperatures. and is more resistant to sensitization.
Super Duplex Stainless Steel Needle Valve Specification
Field | Value |
Pressure Class | 6000, 10000, 15000 psi |
Size | 1/8″ to 2″ (3 mm to 50 mm) |
Thread / End Connections | NPT, BSPT, BSPP, Butt Weld, Socket Weld, Compression Fittings |
End Connections | Female × Female NPT, Male × Female NPT, Female × Female BSPP |
Needle Valve Types | Bar Stock, High Pressure, Angle, Union Bonnet, Miniature, Screwed Bonnet, Forged |
Body Material | Forged UNS S32750 / UNS S32760 Super Duplex Stainless Steel |
Max Working Pressure | Up to 6000 psig (413 bar) |
Operating Temperature | -50°C to 300°C (-58°F to 572°F) |
Design | Forged Body, Inline (Straight) or Angle Pattern, Integral Bonnet |
Patterns | Straight / Angle |
Super Duplex Steel Needle/Gauge Valves Equivalent Standard Grade
STANDARD | UNS | WERKSTOFF NR. |
Super Duplex 2507 | S32750 / S32760 | 1.4410 |
Super Duplex Steel S32750 & S32760 Needle Valve Types










Super Duplex Steel UNS S32750 / S32760 Needle & Gauge Valve Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
S32760 | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
UNS S32750 & S32760 Super Duplex Steel Needle Valve Mechanical Properties
Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
S32750 / S32760 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000, MPa – 800 | Psi – 80000, MPa – 550 | 15 % |
Applications & Industries
Super Duplex Stainless Steel (UNS S32750 / S32760) needle valves are engineered for highly corrosive and high-pressure environments. Their superior strength and resistance to pitting, crevice corrosion, and stress corrosion cracking make them ideal for critical applications.
Key Industries:
- Oil & Gas — upstream, midstream, and downstream systems
- Chemical Processing — aggressive media handling and dosing systems
- Offshore Platforms — seawater exposure and harsh marine environments
- Subsea Systems — deep-water pressure control and fluid regulation
- Power Generation — high-pressure steam and fluid control systems
Marine & Shipbuilding — corrosion-resistant flow control solutions.
Why Choose Kalpataru (EEAT Trust Block)
Kalpataru Piping Solutions is a trusted manufacturer and global supplier of Super Duplex needle valves, delivering high-performance products for demanding industrial applications.
Our Strengths:
- Extensive experience in Super Duplex Stainless Steel products
- Compliance with international standards (ASTM, ASME, ISO)
- In-house quality testing and inspection procedures
- Ready stock for fast dispatch and urgent requirements
- Custom manufacturing as per client specifications
- Export supply to Middle East, Europe, Southeast Asia, and Africa
Quality & Certifications:
- Material Test Certificates (MTC EN 10204 3.1)
- PMI (Positive Material Identification)
- Hydrostatic & pressure testing
- Third-party inspection (TPI) available
Related Products
Explore our complete range of Super Duplex flow control and piping products:
- Inconel Needle Valve
- Monel Needle Valve
- Nickel Alloy Needle Valve
- Hastelloy Needle Valve
- Titanium Needle Valve
- Copper Nickel Needle Valve
- Other Needle Valve
Looking for bulk supply or project requirements? Contact our team for customized solutions.
Packing, Delivery & Export Information
We ensure safe and timely delivery of Super Duplex needle valves with industry-standard packaging and logistics support.
Packaging:
- Wooden boxes / fumigated crates
- Bubble wrap and protective sealing
- End protection caps to prevent damage
Delivery:
- Ready stock for immediate shipment
- Standard and express delivery options
- PAN India and global shipping
Export Support:
- Export-grade packaging
- Complete documentation (Invoice, Packing List, COO)
- Support for FOB, CIF, and EXW shipping terms
- Coordination with international freight partners
Frequently Asked Questions — Super Duplex Steel S32750 / S32760 Needle Valves
A1: Both are super duplex grades with 24–26% chromium and 6–8% nickel. S32760 adds tungsten (up to 1%) and cobalt, giving it marginally improved resistance in highly corrosive chloride environments. For most applications — oil & gas, chemical processing — both grades perform comparably.
A2: Our S32750/S32760 needle valves are rated at 6000, 10000 and 15000 psi. Maximum working pressure for standard configurations is 6000 psig (413 bar).
A3: Available in NPT, BSPT, BSPP threaded, socket weld, butt weld and compression fitting configurations.
A4: Yes — all valves are supplied with material test reports (MTR), third-party inspection certificates, and compliance documentation per EN 10204 3.1 / 3.2 as required.
Other Available Stock of Super Duplex Steel S32750 & S32760 Needle & Gauge Valve
- Super Duplex 2507 Locked Bonnet Needle Valve
- Super Duplex Steel Integral Needle Valves
- Super Duplex Steel Screwed Bonnet Needle Valve
- UNS S32760 Forged Body Needle Valve
- Super Duplex S32750 Female Needle Valves
- Super Duplex Steel Male Needle Valves Dealer
- Grade S32760 Square Body Needle Valve
- Super Duplex Steel Instrument Needle Valve
- Super Duplex S32760 Tube End Needle Valves
- UNS S32750 90 Deg Angled Needle Valve
- 2507 Super Duplex Steel Straight Needle Valve
- DIN 1.4410 Hex Body Needle Valve
- Super Duplex Steel Right Angle Needle in India
- Super Duplex S32750 Gauge Needle Valves
- Super Duplex Steel Single Port Gauge Needle Valve
- Super Duplex Grade S32750 Flanged Needle Valve
- Super Duplex Steel 2507 Y-Pattern Needle Valve
- Super Duplex UNS S32760 Female Male Needle Valves
- DIN 1.4410 High Pressure Needle Valve
- Super Duplex Steel Bolted Bonnet Needle Valves
- Alloy 2507 Union Bonnet Needle Valve Supplier
- Super Duplex Steel Welded Bonnet Needle Valves
- S32750 Super Duplex Steel Needle Valve Flanged End
- S32760 Super Duplex Steel Pneumatic Needle Valves
- 2507 Super Duplex Round Body Needle Valve Exporter
- Super Duplex Steel Multi-Port Needle / Gauge Valve
- Super Duplex Stainless Steel Industrial Needle Valve
- Super Duplex Steel Rising Plug Needle Valve in India
- S32750 / S32760 Nonrotating-Stem Needle Valves
- Super Duplex Steel Multi Port Gauge Needle Valve