Super Duplex Spectacle Spacer is a specialized piping component designed for positive flow control, line isolation, and maintenance applications in demanding industrial systems. Manufactured from high-performance super duplex stainless steel, these components combine high mechanical strength with excellent resistance to corrosion, pitting, crevice corrosion, and chloride-containing environments.
A spectacle spacer assembly is generally designed with two integral elements: a solid plate used for complete line isolation and a spacer opening used when the pipeline needs to remain in an open-flow condition. The connected configuration allows operators to change the position of the component according to the operating requirement without completely removing the assembly from the piping system.
Super Duplex Spectacle Spacers are widely used in oil and gas, offshore, petrochemical, chemical processing, marine, desalination, water treatment, and other industries where reliable isolation and long-term material performance are important. Depending on the piping design, they can be manufactured in different sizes, pressure classes, thicknesses, and facing configurations.
What is a Super Duplex Spectacle Spacer?
A Super Duplex Spectacle Spacer is a piping component manufactured from super duplex stainless steel and designed for use between flanges. Its characteristic shape combines a spacer section and a blind section in one connected assembly.
The spacer section maintains the required opening between the mating flanges and allows process fluid to pass through the pipeline. The blind section, when correctly positioned between the flanges, provides positive physical isolation of the line.
This arrangement makes a spectacle spacer useful where the piping system periodically changes between an operating configuration and an isolated configuration. Instead of storing separate components for each condition, the connected assembly provides both functions in a single unit.
The component is selected according to factors such as pipe size, pressure rating, flange facing, material grade, operating temperature, process fluid, and applicable piping standards.
Super Duplex Stainless Steel Material
Super duplex stainless steel is selected for applications that require a combination of high strength and excellent corrosion resistance. Its two-phase microstructure contains both austenitic and ferritic phases, providing a balance of mechanical and corrosion-resistant properties.
Super duplex grades are particularly suitable for environments containing chlorides and seawater, where conventional stainless steels may require additional consideration.
Common material grades used for Super Duplex Spectacle Spacers include:
UNS S32750
UNS S32750, commonly known as Super Duplex 2507, is widely used for demanding industrial and offshore applications. It offers high strength and strong resistance to localized corrosion mechanisms such as pitting and crevice corrosion.
UNS S32760
UNS S32760 is another high-performance super duplex stainless steel grade used in applications requiring high mechanical strength and corrosion resistance. It is suitable for various aggressive process and marine environments when specified according to the project requirements.
For forged components, ASTM A182 grades such as F53 and F55 may be specified where applicable. The exact material specification should always be confirmed according to the engineering requirement and applicable standard.
Key Features of Super Duplex Spectacle Spacer
Super Duplex Spectacle Spacers are designed to provide reliable performance in demanding piping systems. Important features include:
- Manufactured from super duplex stainless steel
- High mechanical strength
- Excellent resistance to corrosion
- Strong resistance to chloride-containing environments
- Good resistance to pitting and crevice corrosion
- Suitable for offshore and marine applications
- Available in different pipe sizes
- Available in multiple pressure classes
- Compatible with different flange facing configurations
- Spacer and blind sections integrated into one assembly
- Suitable for line isolation applications
- Custom dimensions available according to project requirements
- Can be supplied with inspection and material documentation
The combination of strength and corrosion resistance makes these components suitable for piping systems where both mechanical loading and aggressive service conditions must be considered.
Types and Configurations
Super Duplex Spectacle Spacers can be supplied in different configurations depending on the piping arrangement.
Standard Spectacle Configuration
The standard design consists of a spacer opening connected to a solid blind section. The assembly can be rotated to place either section between the mating flanges.
Raised Face Configuration
Raised face configurations are designed for piping systems using raised-face flanges. The dimensions and thickness are selected according to the applicable flange standard and project requirements.
Flat Face Configuration
Flat face configurations can be supplied for applications where flat-face flange arrangements are specified. Proper gasket selection and flange compatibility are important during installation.
Ring-Type Joint Configuration
For higher-pressure or specialized applications, RTJ-compatible configurations may be specified where required by the piping design. The dimensions of the sealing area must match the corresponding flange and gasket arrangement.
Custom Spectacle Spacer
Custom Super Duplex Spectacle Spacers can be manufactured when standard dimensions do not meet the requirements of a particular project. Customization may include dimensions, thickness, bore, facing, material grade, pressure class, marking, and inspection requirements.
Applications of Super Duplex Spectacle Spacer
Super Duplex Spectacle Spacers are used across several industries where controlled isolation and corrosion resistance are important.
Oil and Gas Industry
In oil and gas facilities, piping systems may require frequent isolation during maintenance, inspection, or equipment servicing. Super Duplex Spectacle Spacers can be used in suitable piping arrangements to provide a physical isolation option.
Offshore Applications
Offshore platforms and production facilities are exposed to marine environments and chloride-containing conditions. Super duplex stainless steel provides a combination of strength and corrosion resistance that is suitable for many offshore piping applications.
Petrochemical Plants
Petrochemical processing systems can involve aggressive fluids, elevated temperatures, and demanding pressure conditions. Properly specified super duplex components can provide reliable service in suitable process environments.
Chemical Processing
Chemical plants use a wide range of process fluids that may create challenging corrosion conditions. The material grade and component configuration should be selected according to the specific chemical composition, temperature, pressure, and operating conditions.
Marine Applications
Marine piping systems are continuously exposed to seawater or salt-containing environments. Super Duplex Spectacle Spacers can be considered for applications where resistance to chloride-related corrosion is required.
Desalination Plants
Desalination systems commonly handle seawater and concentrated brine streams. Super duplex stainless steel is frequently considered for components exposed to these demanding environments, subject to project specifications.
Water Treatment
Water treatment and industrial water systems may require durable piping components for isolation and maintenance activities. Super Duplex Spectacle Spacers can be supplied for suitable piping configurations where corrosion resistance is required.
Benefits of Super Duplex Spectacle Spacer
One of the main advantages of a spectacle spacer is its ability to provide two functional positions within a connected assembly. This can simplify line isolation and operating changes when the piping system is designed for this arrangement.
Positive Physical Isolation
The solid section provides a physical barrier when positioned correctly between the flanges. This can support maintenance and isolation procedures where positive separation is required.
Open-Flow Position
The spacer section maintains an opening through the flange connection, allowing normal flow when the piping system is configured for operation.
High Strength
Super duplex stainless steel provides high mechanical strength compared with many conventional austenitic stainless steel grades. This can be beneficial in demanding piping environments.
Corrosion Resistance
The material provides strong resistance to many forms of corrosion, including localized corrosion associated with chloride-containing environments.
Long-Term Service Potential
When correctly selected, manufactured, installed, and maintained, super duplex components can provide durable service in demanding industrial environments.
Reduced Component Handling
Because the spacer and blind sections are connected, the arrangement can reduce the need to handle and store separate loose components during configuration changes.
Factors to Consider When Selecting a Super Duplex Spectacle Spacer
Selecting the correct component requires more than simply choosing a material grade. The complete piping design should be reviewed before ordering.
Important factors include:
- Nominal Pipe Size: The spacer dimensions must match the piping and mating flange arrangement.
- Pressure Class: Select the appropriate pressure rating according to the system design.
- Material Grade: UNS S32750 or UNS S32760 should be selected based on service conditions and project specifications.
- Flange Facing: Confirm whether RF, FF, RTJ, or another configuration is required.
- Operating Temperature: Temperature can influence material performance and gasket selection.
- Process Medium: Consider chlorides, chemicals, seawater, hydrocarbons, and other process fluids.
- Applicable Standards: Dimensions and manufacturing requirements should be confirmed against the relevant standards.
- Inspection Requirements: PMI, dimensional inspection, NDT, material certificates, and other testing may be specified by the customer.
- Installation Requirements: Confirm gasket, bolting, flange alignment, and torque requirements before installation.
By considering these factors, buyers can specify a Super Duplex Spectacle Spacer that is compatible with the intended piping system and operating conditions.
Super Duplex Spectacle Spacer Specifications and Manufacturing
Super Duplex Spectacle Spacers are manufactured according to the dimensional, material, pressure, and inspection requirements of the piping application. Correct specification is important because the component must fit accurately between mating flanges while providing the required spacer or isolation function.
Super Duplex Spectacle Spacer Specifications
The following specifications represent commonly supplied configurations. Final dimensions and requirements should be confirmed according to the applicable standard and project specification.
| Specification | Details |
|---|---|
| Product Name | Super Duplex Spectacle Spacer |
| Material | Super Duplex Stainless Steel |
| Common Grades | UNS S32750 / UNS S32760 |
| Forged Material Grades | ASTM A182 F53 / F55, where applicable |
| Manufacturing | Forged and Machined |
| Flange Standards | ASME B16.5 / ASME B16.47, where applicable |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Facing Options | RF, FF, RTJ, as required |
| Configuration | Spacer and Blind Sections |
| Size | As per applicable flange and piping requirements |
| Thickness | As per pressure class and design requirements |
| Inspection | As per customer/project requirements |
| Testing | PMI, dimensional inspection, NDT, and other tests as specified |
| Documentation | MTC, inspection reports, and test certificates as required |
| Customization | Available according to drawings and specifications |
The final product specification should always be confirmed before manufacturing because dimensions, pressure ratings, materials, and facing details can vary according to the application.
Dimensions of Super Duplex Spectacle Spacer
Dimensions are an important consideration when selecting a Super Duplex Spectacle Spacer. The component must correctly match the nominal pipe size and the mating flange arrangement.
Depending on the design, dimensional requirements can include:
- Nominal pipe size
- Outside diameter
- Inside diameter or bore
- Overall thickness
- Spacer thickness
- Blind section thickness
- Bolt hole diameter
- Bolt hole quantity
- Bolt circle diameter
- Flange facing dimensions
- Overall assembly dimensions
For standard applications, dimensions can be manufactured according to the applicable flange standard. For custom projects, the manufacturer can use approved engineering drawings to produce the required configuration.
Dimensional compatibility should be checked before installation to prevent problems with flange alignment, gasket seating, bolting, and pipeline assembly.
Pressure Classes
Super Duplex Spectacle Spacers can be supplied for different pressure classes depending on the piping design and applicable flange requirements.
Common pressure classes include:
- Class 150
- Class 300
- Class 600
- Class 900
- Class 1500
- Class 2500
The pressure class should not be selected independently from the piping system. It should correspond with the pressure-temperature rating, flange configuration, material requirements, and applicable design code.
Higher pressure applications may require more stringent dimensional, material, and inspection requirements. The manufacturer should therefore receive complete technical specifications before production.
Flange Facing Options
The facing arrangement is another important specification for a Super Duplex Spectacle Spacer. The facing must be compatible with the mating flange and selected gasket.
Raised Face
Raised face, or RF, configurations are widely used in industrial piping systems. The raised sealing surface provides the required gasket seating arrangement between mating flanges.
Flat Face
Flat face, or FF, configurations can be supplied for applications using flat-face flanges. Proper alignment and gasket selection are important to prevent excessive localized loading.
Ring-Type Joint
RTJ configurations are used in applications requiring a ring-type sealing arrangement. The groove and sealing dimensions must be manufactured accurately to match the corresponding flange and gasket.
The required facing should be specified at the quotation and engineering stage to avoid compatibility issues during installation.
Manufacturing Process
Manufacturing a Super Duplex Spectacle Spacer involves several controlled stages to achieve the required material properties, dimensions, surface finish, and inspection requirements.
1. Material Selection
The process begins with the selection of the specified super duplex stainless steel grade, such as UNS S32750 or UNS S32760.
Where applicable, forged material may be supplied to an ASTM A182 specification such as F53 or F55.
The material documentation should be reviewed before production to verify the specified grade and heat information.
2. Raw Material Preparation
The selected raw material is cut according to the required dimensions and manufacturing process. Proper preparation helps minimize material wastage while maintaining the required forging and machining allowance.
3. Forging
For forged construction, the material is heated under controlled conditions and formed to the required shape.
Forging can help produce a dense and strong component with suitable mechanical properties. Temperature control is particularly important when processing super duplex stainless steel.
4. Solution Heat Treatment
Super duplex stainless steel requires appropriate heat treatment to achieve the desired metallurgical structure and corrosion performance.
Solution annealing and controlled cooling may be performed according to the applicable material specification and manufacturing procedure.
The heat treatment parameters should be properly controlled and documented.
5. Machining
After forging and heat treatment, machining is performed to achieve the required dimensions.
Machining operations can include:
- Outside diameter machining
- Bore machining
- Face machining
- Bolt hole drilling
- Facing preparation
- RTJ groove machining, where applicable
- Edge finishing
- Marking surfaces
CNC or precision machining equipment may be used for components requiring close dimensional tolerances.
6. Surface Finishing
The finished component may undergo cleaning, deburring, and surface finishing according to the project requirements.
The surface should be free from excessive burrs, contamination, and machining defects that could affect installation or performance.
Quality Control
Quality control is an important part of Super Duplex Spectacle Spacer manufacturing because the component may be used in high-pressure and corrosive service.
Typical quality checks can include:
- Raw material verification
- Heat number traceability
- Chemical composition verification
- Mechanical property verification
- Heat treatment records
- Dimensional inspection
- Visual inspection
- Surface inspection
- Positive Material Identification
- Ultrasonic Testing, where specified
- Liquid Penetrant Testing, where specified
- Hardness testing, where required
- Final inspection
- Documentation review
The exact inspection plan depends on the product specification, industry requirements, and customer purchase order.
Positive Material Identification
Positive Material Identification, commonly called PMI, may be performed to verify the alloy composition of the finished component.
PMI testing can help confirm that the supplied material corresponds to the specified super duplex grade.
This is particularly useful for critical piping applications where material traceability is important.
The PMI method and acceptance criteria should be defined according to the project or inspection specification.
Dimensional Inspection
Dimensional inspection confirms that the finished Super Duplex Spectacle Spacer matches the approved drawing or applicable standard.
Typical measurements may include:
- Outside diameter
- Bore diameter
- Thickness
- Bolt hole diameter
- Bolt hole spacing
- Bolt circle diameter
- Facing dimensions
- Overall assembly dimensions
Accurate dimensional inspection helps ensure proper flange alignment and gasket seating during installation.
Non-Destructive Testing
Non-destructive testing may be specified depending on the application and customer requirements.
Ultrasonic Testing
Ultrasonic Testing, or UT, can be used to examine internal material conditions and identify certain discontinuities.
Liquid Penetrant Testing
Liquid Penetrant Testing, or PT, can be used to detect surface-breaking discontinuities on suitable non-porous surfaces.
NDT requirements should be agreed during the procurement stage because the required method, extent, and acceptance criteria can vary between projects.
Material Test Certificate
A Material Test Certificate, or MTC, can be supplied with the Super Duplex Spectacle Spacer when required.
The certificate may contain information such as:
- Material grade
- Applicable material specification
- Heat number
- Chemical composition
- Mechanical properties
- Heat treatment information
- Product identification
- Inspection results
- Manufacturer details
Traceability between the MTC, raw material, and finished component is important for quality assurance.
Marking and Identification
Permanent product marking can be provided according to the customer’s requirements and applicable standards.
Typical identification may include:
- Manufacturer identification
- Material grade
- Size
- Pressure class
- Heat number
- Product identification
- Standard or specification reference
Marking helps maintain traceability during storage, installation, inspection, and maintenance.
Gasket Selection
Correct gasket selection is important when installing a Super Duplex Spectacle Spacer.
The gasket should be compatible with:
- Flange facing
- Pressure
- Temperature
- Process medium
- Material combination
- Operating conditions
For RF, FF, and RTJ configurations, the gasket arrangement must correspond to the relevant flange facing.
An unsuitable gasket can lead to leakage, poor sealing, or premature failure. Therefore, gasket selection should follow the piping design and project specifications.
Bolting Requirements
Bolting must be compatible with the flange assembly and operating conditions.
Important considerations include:
- Bolt material
- Nut material
- Bolt diameter
- Bolt length
- Lubrication
- Tightening sequence
- Required torque
Bolts should be tightened in a controlled cross-pattern sequence where appropriate to achieve uniform gasket compression.
Excessive or uneven tightening can create flange distortion or gasket problems.
Installation Considerations
Before installation, the Super Duplex Spectacle Spacer should be inspected for:
- Correct size
- Correct material grade
- Correct pressure class
- Correct facing
- Surface condition
- Bolt hole alignment
- Identification and traceability
The mating flange faces should be clean and properly aligned. Foreign material, damaged gasket surfaces, or excessive flange misalignment should be addressed before assembly.
When the spacer section is positioned between the flanges, the piping system remains configured for flow. When the blind section is correctly positioned according to the engineered isolation procedure, it provides the intended physical barrier.
Any change between the operating and isolation positions should be performed only under the approved plant procedure and after confirming that the line is in a safe condition.
Storage and Packaging
Proper storage helps protect the Super Duplex Spectacle Spacer before installation.
Components should be:
- Clean and dry
- Protected from contamination
- Stored in a suitable covered area
- Protected from unnecessary impact
- Kept away from corrosive contaminants
- Properly identified during storage
Packaging can include suitable protective material, separators, wrapping, and wooden cases or pallets depending on product size and shipping requirements.
For export shipments, packaging should be selected to protect the component against handling damage, moisture, and environmental exposure during transportation.
Proper packaging and traceability help ensure that the Super Duplex Spectacle Spacer reaches the installation site in suitable condition.
Advantages and Applications of Super Duplex Spectacle Spacer
Super Duplex Spectacle Spacers are used in piping systems where controlled flow, physical isolation, and material durability are important. Their combination of a spacer section and blind section provides flexibility for operating and isolation conditions, while super duplex stainless steel offers high strength and corrosion resistance.
Advantages of Super Duplex Spectacle Spacer
Positive Line Isolation
One of the primary advantages of a spectacle spacer arrangement is the ability to provide a solid physical barrier when the blind section is positioned correctly between the mating flanges.
This can be useful during maintenance, inspection, equipment servicing, and other activities where reliable line isolation is required.
Open-Flow Configuration
The spacer section provides an opening through the flange connection when the piping system is configured for normal operation.
This allows the same connected assembly to support both flow and isolation arrangements.
High Mechanical Strength
Super duplex stainless steel provides high mechanical strength, making it suitable for demanding piping applications where pressure and mechanical loading are important design considerations.
The material can provide a strong combination of yield strength and corrosion resistance compared with many conventional stainless steel grades.
Excellent Corrosion Resistance
Super duplex grades such as UNS S32750 and UNS S32760 are known for strong resistance to several forms of corrosion.
This includes resistance to localized corrosion such as pitting and crevice corrosion, particularly in chloride-containing environments when the grade is properly selected and processed.
Suitable for Marine Environments
Super Duplex Spectacle Spacers can be considered for marine and offshore applications where exposure to seawater and salt-containing environments creates demanding corrosion conditions.
The actual suitability depends on the complete service environment, temperature, chemical composition, and project specifications.
Reduced Component Handling
Because the spacer and blind sections are connected, operators do not need to handle two completely separate components when changing the piping configuration.
This can simplify component management and reduce the possibility of using an incorrect loose component.
Long-Term Service Potential
When manufactured according to the required specifications and installed correctly, super duplex components can provide durable service in demanding industrial piping systems.
Correct material selection, fabrication, inspection, installation, and maintenance remain important for achieving the expected service performance.
Industrial Applications
Super Duplex Spectacle Spacers are suitable for a wide range of industrial applications.
Oil and Gas
Oil and gas facilities contain extensive piping networks used for production, processing, transportation, and utility services.
Spectacle spacer arrangements may be used where piping sections require controlled isolation during maintenance or operating changes.
Super duplex material can be considered for applications exposed to chlorides, seawater, and other corrosive conditions.
Offshore Platforms
Offshore facilities require piping components capable of handling demanding environmental and operating conditions.
Super Duplex Spectacle Spacers can be used in suitable offshore piping systems where high strength and corrosion resistance are required.
Petrochemical Industry
Petrochemical facilities use piping systems for transferring hydrocarbons, process fluids, chemicals, and utilities.
The appropriate super duplex grade can be selected according to pressure, temperature, fluid composition, and corrosion requirements.
Chemical Processing
Chemical processing plants may handle aggressive fluids that require careful material selection.
Super Duplex Spectacle Spacers can be considered for appropriate services where their corrosion resistance and mechanical properties meet the application requirements.
Desalination
Desalination plants handle seawater and concentrated streams that can create demanding chloride exposure.
Super duplex stainless steel is often considered for suitable seawater-related applications because of its resistance to localized corrosion.
Marine Industry
Marine systems may use seawater, brine, or other salt-containing fluids.
Super Duplex Spectacle Spacers can be supplied for suitable marine piping applications requiring a combination of strength and corrosion resistance.
Water Treatment
Industrial water treatment systems can require durable piping components for isolation and maintenance.
The component can be specified according to the water chemistry, pressure, temperature, pipe size, and applicable project requirements.
Super Duplex Spectacle Spacer vs Blind Flange
A blind flange is generally used to close or terminate a piping connection and provide a solid barrier.
A spectacle spacer, in contrast, combines a solid blind section with a spacer section in one connected configuration.
| Feature | Super Duplex Spectacle Spacer | Blind Flange |
|---|---|---|
| Main Function | Flow configuration and physical isolation | Closing or isolating a connection |
| Configuration | Spacer and blind sections connected | Solid flange |
| Flow Position | Spacer section provides opening | Not intended for normal flow |
| Isolation Position | Blind section provides physical barrier | Solid flange provides barrier |
| Material | Super Duplex Stainless Steel | Various materials |
| Typical Use | Systems requiring operating/isolation changes | Permanent or temporary closure |
The appropriate component depends on the piping design and operational requirements.
Super Duplex Spectacle Spacer vs Spectacle Blind
A spectacle blind is commonly understood as an assembly incorporating an open section and a blind section connected together.
Terminology can vary between manufacturers, industries, and project specifications. Therefore, buyers should provide a drawing or detailed technical specification when ordering to ensure the required configuration is manufactured correctly.
A component described as a “spectacle spacer” may have project-specific dimensional or functional requirements. Confirming the terminology and drawing before production helps prevent specification errors.
Super Duplex Spectacle Spacer vs Spacer Ring
A spacer ring generally provides an opening and maintains a defined separation between mating flanges.
A spectacle spacer can incorporate a spacer section together with a connected blind section.
Therefore, a spacer ring may be appropriate when only the open configuration is required, while a spectacle-type arrangement can be useful when both open and isolated configurations are required.
How to Select the Right Super Duplex Spectacle Spacer
Selecting the correct component requires reviewing the complete piping application.
1. Confirm Pipe Size
The nominal pipe size should match the piping system and mating flange arrangement.
2. Select Material Grade
Common choices include:
- UNS S32750
- UNS S32760
The selected grade should meet the corrosion and mechanical requirements of the service.
3. Confirm Pressure Class
Pressure classes such as 150, 300, 600, 900, 1500, and 2500 may be available depending on the applicable flange requirements.
4. Select Flange Facing
Specify the required configuration, such as:
- Raised Face
- Flat Face
- Ring-Type Joint
5. Check Operating Conditions
Important operating conditions include:
- Pressure
- Temperature
- Fluid composition
- Chloride concentration
- Flow conditions
- External environmental exposure
6. Confirm Applicable Standards
The applicable dimensional and material standards should be identified before manufacturing.
7. Define Inspection Requirements
Critical projects may require PMI, dimensional inspection, NDT, MTC, or additional inspection documentation.
8. Provide Drawings for Custom Products
For non-standard requirements, an approved technical drawing can help the manufacturer confirm dimensions and configuration before production.
Installation of Super Duplex Spectacle Spacer
Installation should be carried out according to the approved piping procedure.
Before installation, verify the component’s:
- Material
- Size
- Pressure class
- Facing
- Identification
- Dimensional compatibility
- Surface condition
The mating flange faces should be clean and properly aligned.
A suitable gasket should be installed according to the selected flange facing and service conditions. Bolting should be installed and tightened using the specified sequence and torque requirements.
When the operating configuration is required, the spacer section should be positioned correctly. When isolation is required, the blind section should be positioned according to the approved isolation procedure.
Any repositioning should only be performed after confirming that the piping system is depressurized, drained, isolated, and safe for the intended work.
Maintenance and Inspection
Super Duplex Spectacle Spacers generally require routine inspection as part of the overall piping maintenance program.
Inspection can include:
- Visual examination
- Surface condition checks
- Corrosion inspection
- Flange and gasket inspection
- Identification verification
- Bolt condition
- Alignment checks
- Periodic NDT where required
Particular attention may be given to areas exposed to seawater, chlorides, chemicals, or other aggressive environments.
If surface damage, abnormal corrosion, deformation, or sealing problems are identified, the component should be evaluated according to the applicable maintenance procedure.
Custom Super Duplex Spectacle Spacer Manufacturing
Custom manufacturing is available for projects that require dimensions or configurations outside standard requirements.
Customization can include:
- Custom outside diameter
- Custom bore
- Special thickness
- Custom bolt pattern
- Special facing
- Specific pressure class
- UNS S32750 construction
- UNS S32760 construction
- Special marking
- Customer-specific inspection
- Special testing requirements
- Drawing-based manufacturing
Customers can provide technical drawings, dimensional schedules, purchase specifications, or project standards to help define the required product.
Why Choose a Super Duplex Spectacle Spacer Manufacturer?
Selecting a qualified manufacturer is important for critical piping components.
A reliable manufacturer should be able to support:
- Correct material selection
- Controlled manufacturing
- Heat treatment documentation
- Dimensional accuracy
- Material traceability
- PMI testing
- NDT where required
- Inspection documentation
- Proper product marking
- Protective packaging
- Custom manufacturing
For project requirements, the manufacturer should review the technical specification before confirming the final product configuration.
Super Duplex Spectacle Spacer Manufacturer and Supplier
As a Super Duplex Spectacle Spacer manufacturer and supplier, we can provide products manufactured according to specified material grades, dimensions, pressure classes, and flange configurations.
Super Duplex Spectacle Spacers can be supplied for industrial, offshore, marine, chemical, petrochemical, oil and gas, desalination, and water treatment applications.
Products can be manufactured using UNS S32750 or UNS S32760 material, with applicable forged material specifications such as ASTM A182 F53 or F55 where required.
Standard and customized configurations can be produced according to approved drawings and project specifications.
Frequently Asked Questions
What is a Super Duplex Spectacle Spacer?
A Super Duplex Spectacle Spacer is a piping component combining a spacer section and a solid blind section in one connected assembly. It can be configured for open flow or physical isolation according to the piping design.
Which materials are used for Super Duplex Spectacle Spacers?
Common materials include UNS S32750 and UNS S32760 super duplex stainless steel. Forged material specifications such as ASTM A182 F53 and F55 may be used where applicable.
What are the common applications?
They are used in oil and gas, offshore, petrochemical, chemical processing, marine, desalination, and water treatment piping systems.
What pressure classes are available?
Common pressure classes include 150, 300, 600, 900, 1500, and 2500, subject to the applicable flange standard and product requirements.
Are custom Super Duplex Spectacle Spacers available?
Yes. Custom sizes, thicknesses, bore dimensions, bolt patterns, facings, markings, and other requirements can be manufactured according to approved drawings and specifications.
Can Super Duplex Spectacle Spacers be used with seawater?
Super duplex stainless steel can be suitable for many seawater-related applications because of its corrosion resistance. However, suitability should be confirmed based on the actual seawater chemistry, temperature, pressure, and project requirements.
What inspection documents can be supplied?
Depending on the purchase specification, documentation may include Material Test Certificates, PMI reports, dimensional inspection reports, NDT reports, heat treatment records, and other quality documents.
What information is required for quotation?
Customers should provide the required material grade, nominal pipe size, pressure class, flange facing, dimensions, quantity, applicable standard, service conditions, inspection requirements, and delivery requirements.
Get a Quote for Super Duplex Spectacle Spacer
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