Description

Super Duplex 32750 Grade Threaded Fasteners

High-Strength Fasteners for Extreme Corrosive Environments

Aanuraj Fasteners Pvt. Ltd. manufactures and supplies Super Duplex Stainless Steel 32750 (UNS S32750 / EN 1.4410 / 2507) threaded fasteners designed for demanding applications where high mechanical strength, excellent corrosion resistance and long-term reliability are essential.

Super Duplex 32750 combines a duplex microstructure with approximately 25% chromium, 7% nickel, 4% molybdenum and nitrogen, providing a strong combination of strength and resistance to localized corrosion. Its high alloy content gives it a high Pitting Resistance Equivalent (PRE) and makes it suitable for aggressive chloride-containing environments.

Aanuraj specializes in hot-forged stainless steel and exotic-grade threaded fasteners, manufactured to customer drawings, applicable standards, and project specifications.

Do Watch, Like & Subscribe:

Key Features of Super Duplex 32750 Fasteners

1. Exceptional Corrosion Resistance

Excellent resistance to pitting, crevice corrosion and chloride-containing environments, making UNS S32750 suitable for offshore, marine, chemical and desalination applications.

2. High Mechanical Strength

Super Duplex 32750 provides significantly higher strength than conventional austenitic stainless steels, allowing robust fastening performance in demanding equipment and structures.

3. Excellent Resistance to Stress Corrosion Cracking

The duplex metallurgical structure provides enhanced resistance to stress corrosion cracking compared with many conventional stainless-steel grades.

4. Excellent Chloride Resistance

Particularly suitable for environments exposed to seawater, brine and chloride-containing process fluids.

5. Long Service Life

High corrosion resistance and mechanical strength can help reduce maintenance, replacement frequency and overall life-cycle cost.

Technical Data

Typical composition values are consistent with published S32750 data; actual requirements should be verified against the applicable material/product standard and purchase specification.

Applicable Fastener Standards

Depending on product type, application and customer specification, Aanuraj can manufacture/supply fasteners to applicable standards such as:

• ASTM A193 – Bolting for high-temperature/high-pressure and special-purpose applications
• ASTM A194 – Nuts for high-pressure/high-temperature service
• ASTM A182 – Forged stainless-steel components
• ASME B18.2.1 – Inch Hex Bolts and Screws
• ASME B18.2.3.1M / applicable metric dimensional standards
• DIN / ISO dimensional standards
• Customer drawings and project specifications

ASTM A193 covers alloy-steel and stainless-steel bolting including bolts, studs, stud bolts and related bolting components for pressure vessels, valves, flanges, fittings and special-purpose applications.

Why Choose Aanuraj for Super Duplex 32750 Fasteners?

Specialist in Exotic-Grade Fasteners

Aanuraj focuses on stainless steel, duplex, super duplex and high-nickel alloy fasteners for demanding industrial applications.

Hot Forging Expertise

Our manufacturing capability includes hot forging, CNC machining and thread rolling, enabling us to manufacture engineered fasteners in larger diameters and customized configurations.

Quality & Traceability

Material identification, dimensional inspection, chemical verification, mechanical testing and PMI can be provided according to project and customer requirements.

Custom Manufacturing

We manufacture fasteners according to customer drawings, specifications, standards, dimensions, thread requirements and special inspection requirements.

Reliable Industrial Supply

Our products are intended for critical industries where material integrity, dimensional accuracy and dependable delivery matter.

Complete Documentation

Material Test Certificates, inspection documentation, PMI and third-party inspection can be arranged as required by the purchase order/project specification.

Two Important Advantages

01 — HIGH CORROSION RESISTANCE

UNS S32750 is engineered for aggressive chloride and marine environments, offering excellent resistance to localized corrosion and making it a preferred material for demanding applications.

02 — HIGH STRENGTH + LONG SERVICE LIFE

The combination of high mechanical strength and corrosion resistance makes Super Duplex 32750 an excellent choice where fastener reliability and reduced maintenance are critical.

Choose Aanuraj for Critical Fastening Applications

When your application demands more than ordinary stainless-steel fasteners, Aanuraj Super Duplex 32750 Fasteners provide the combination of strength, corrosion resistance, engineering capability and quality assurance required for critical industrial service.

Product Range

Aanuraj can manufacture and supply Super Duplex 32750 threaded fasteners including:

Hex Bolts | Heavy Hex Bolts | Stud Bolts | Full Thread Studs | Threaded Rods | Double-End Studs | Heavy Hex Nuts | Hex Nuts | Washers | U-Bolts | Custom Fasteners

Available with metric, UNC, UNF and other thread forms as required by the application, drawing or purchase specification.

Sizes and lengths: Manufactured as per applicable standard, drawing and customer requirement.

Applications

Super Duplex 32750 fasteners are particularly suitable for critical applications involving high corrosion, chloride exposure and demanding mechanical loading.

Oil & Gas

• Offshore platforms
• Subsea equipment
• Pipelines
• Flanges and valves
• Wellhead and process equipment

Chemical & Petrochemical

• Chemical processing plants
• Pressure vessels
• Piping systems
• Heat exchangers
• Process equipment

Desalination & Water Treatment

• Desalination plants
• Reverse-osmosis systems
• Seawater handling equipment
• Pumps and piping

Marine & Offshore

• Marine structures
• Seawater systems
• Offshore equipment
• Subsea applications

Power & Energy

• Power-generation equipment
• Heat exchangers
• Condensers
• Cooling systems

S32750 is commonly selected for desalination, industrial piping, scrubbers, oil & gas, deep-sea pipelines, flanges and valves because it combines corrosion resistance and mechanical strength.

Need Super Duplex 32750 Bolts, Studs, Nuts or Custom Fasteners?

Call: +91 90227 02227
Email: sales@aanuraj.com

Aanuraj Fasteners Pvt. Ltd.
Engineered for Reliability. Trusted for Performance.

Technical note: Grade, product form, mechanical requirements, heat treatment, dimensions and applicable standard should always be confirmed against the customer’s purchase specification and the governing ASTM/ASME/DIN/ISO standard.

Do watch: