Super Duplex Fastener Manufacturer & Supplier
Super Duplex fasteners are engineered for applications where conventional stainless steel fasteners may not provide the required combination of strength, corrosion resistance and service reliability. Their duplex microstructure provides high mechanical strength along with excellent resistance to chloride-containing and aggressive environments.
Industrial Engineering Works manufactures and supplies Super Duplex fasteners for demanding industrial applications, including offshore, subsea, marine, chemical processing, oil and gas, desalination and power generation. Products can be manufactured to applicable ASTM, ASME, customer drawings and project specifications.
Our Super Duplex Fastener Range
Super Duplex Stud Bolts
High-strength stud bolts manufactured for critical bolted connections, pressure equipment, flanges and industrial assemblies.
Super Duplex Hex Bolts
Precision-manufactured hex bolts for equipment, piping and structural industrial connections.
Super Duplex Heavy Hex Bolts
Heavy hex configurations for applications requiring robust bolted connections and increased bearing surfaces.
Super Duplex Heavy Hex Nuts
Matching heavy hex nuts designed for Super Duplex bolting assemblies and critical industrial connections.
Super Duplex Threaded Rods
Threaded rods available for equipment assemblies, supports, structural connections and custom applications.
Super Duplex Anchor Bolts
Custom anchor bolts for industrial equipment, foundations, supports and specialized installation requirements.
Available Super Duplex Grades
Applications
Offshore Oil & Gas Platforms
Super Duplex fasteners for offshore structures, equipment, piping and critical bolted connections.
Subsea Equipment
Fasteners for subsea equipment and assemblies exposed to aggressive marine environments.
Marine Engineering
Suitable for marine systems, seawater equipment and corrosion-sensitive applications.
Desalination Plants
Used in equipment and connections exposed to seawater and high-chloride process environments.
Chemical Processing
Fasteners for chemical processing equipment and systems requiring enhanced corrosion resistance.
Power Generation
Solutions for demanding equipment and bolted connections used in power generation facilities.
Heat Exchangers
Super Duplex fasteners for heat exchanger connections and associated industrial equipment.
Pressure Vessels
High-strength, corrosion-resistant fasteners for pressure-containing equipment and critical bolted connections.
Features & Benefits
Surface Finishes
Natural Finish
Natural stainless steel surface finish for applications where additional coating is not required.
PTFE Coated
PTFE coating options are available for applications requiring specific friction, corrosion or installation characteristics.
Passivated
Passivation can be provided where specified to improve surface condition and corrosion resistance.
Xylan Coated
Xylan coatings can be considered for applications requiring additional surface protection and controlled friction.
Electropolished
Electropolishing can be provided for applications requiring an enhanced, smooth and clean surface finish.
Specifications
Quality Assurance & Testing
ISO Certified Manufacturing
Manufacturing processes are supported by an established quality management system.
PMI Testing
Positive Material Identification can be performed to verify material chemistry where required.
Ferrite Content Testing
Ferrite testing can be included where required by the material specification or project requirements.
Mechanical Testing
Mechanical testing can be performed to verify required material and product properties.
Corrosion Resistance Testing
Additional corrosion-related testing can be arranged according to application and project requirements.
Material Traceability
Material identification and traceability are maintained throughout applicable manufacturing and inspection stages.
EN 10204 3.1 / 3.2 Certificates
Material certificates and third-party certification can be supplied according to customer and project requirements.
Third-Party Inspection
Independent inspection services can be coordinated when required.
Dimensional Inspection
Dimensional inspection verifies critical product dimensions, threads and configuration requirements.
Why Choose Industrial Engineering Works?
Frequently Asked Questions
What are Super Duplex Fasteners?
Super Duplex fasteners are high-strength stainless steel fasteners designed for demanding environments requiring excellent corrosion resistance and mechanical performance.
What is the difference between Duplex 2205 and Super Duplex 2507?
Super Duplex 2507 generally provides higher alloy content, greater corrosion resistance and higher strength than Duplex 2205, making it suitable for more severe environments.
What is the difference between UNS S32750 and UNS S32760?
Both are Super Duplex grades with excellent corrosion resistance and mechanical strength. Selection depends on the applicable material specification, application requirements and project conditions.
What are ASTM A182 F53 and F55?
F53 and F55 are ASTM A182 material grades associated with Super Duplex stainless steel products, including components manufactured for demanding industrial applications.
Which industries use Super Duplex Fasteners?
Super Duplex fasteners are used across offshore oil and gas, subsea, marine, chemical processing, desalination, petrochemical, power generation and other corrosion-intensive industries.
Are Super Duplex Fasteners suitable for seawater applications?
Yes. Super Duplex grades are commonly selected for seawater and marine applications because of their strong resistance to chloride-induced corrosion.
What coatings are available?
Natural finish, passivation, PTFE, Xylan and electropolishing options can be considered depending on the application and customer requirements.
Can you manufacture custom sizes and thread forms?
Yes. Custom dimensions, lengths, thread forms and configurations can be manufactured based on approved drawings and specifications.
Do you provide EN 10204 3.1 / 3.2 certificates?
Yes, EN 10204 3.1 documentation and third-party 3.2 inspection/certification can be arranged when required by the project.
Can matching Super Duplex nuts and washers be supplied?
Yes. Matching Super Duplex nuts and compatible washers can be supplied as part of a complete fastener assembly, subject to project specifications.