Common Metric System Flanges Metric system flanges are a critical component in many industrial applications, providing secure and reliable connections between pipes, valves, and other equipment. This presentation will explore the key features, standards, and selection considerations for common metric flanges.
Introduction to Metric System Flanges What are Metric Flanges?
Key Advantages
Metric flanges are circular connection points designed to
Standardization, interchangeability, and superior sealing
industry standards, allowing pipes and equipment to be
properties make metric flanges a preferred choice in many
easily joined in metric-based systems.
industries.
Overview of Flange Types and Standards 1
3
Common Flange Types
2
Major Standards
Slip-on, weld-neck, blind,
EN 1092, ASME B16.5, and ISO
and socket-weld are some of
7005 are key standards
the most prevalent metric
governing the specifications
flange designs.
of metric flanges.
Material Options
4
Pressure Ratings
Carbon steel, stainless steel,
Flanges are rated for specific
and specialized alloys like
pressure ranges, from low-
Hastelloy are common
pressure to high-pressure
flange material choices.
applications.
Flange Material Considerations Corrosion Resistance
Strength and Durability
The flange material must be
The flange must be able to
compatible with the media
withstand the pressure,
flowing through the system to
temperature, and physical
prevent premature failure.
stresses of the application.
Cost and Availability
Regulatory Compliance
Balancing material
Certain industries have specific
performance with budget and
material requirements for
lead time is crucial when
flanges based on safety and
selecting flanges.
environmental regulations.
Flange Dimensions and Tolerances Bolt Hole Patterns
Face-to-Face Dimensions
Dimensional Tolerances
bolt hole arrangements to
Consistent face-to-face
flange dimensions are
Flanges are typically
ensure proper alignment
measurements enable
crucial for a secure, leak-
marked with identifying
and sealing.
interchangeability and ease
free connection.
information to ensure
Flanges have standardized
of installation.
Tight tolerances on key
Marking and Traceability
proper usage and traceability.
Selecting the Appropriate Flange Application Requirements
Compatibility and Standards
Consider the pressure, temperature, media, and other
Ensure the flange type, size, and material meet the
factors specific to your system when choosing a flange.
relevant industry standards and can interface with existing components.
Installation Considerations
Total Cost of Ownership
Evaluate the physical space, accessibility, and assembly
Factor in not just the initial purchase price, but also the
requirements when selecting the appropriate flange.
long-term maintenance and replacement costs.
Flange Installation and Maintenance 1
Preparation Ensure mating surfaces are clean and aligned properly before assembly.
2
Gasket Placement Select and install the appropriate gasket material to create a reliable seal.
3
Torque Sequence Follow the proper bolt tightening sequence and torque specifications to prevent leaks.
4
Inspection and Monitoring Regularly inspect flanges for signs of wear, corrosion, or loosening, and address issues promptly.
Conclusion and Key Takeaways Standardized Design
Material Selection
Metric flanges provide a
Careful consideration of
consistent, interchangeable
flange material is crucial to
connection solution for piping
match the application's
systems.
requirements.
Proper Installation
Proactive Management
Following best practices for
Regular inspection and timely
flange assembly and
repairs help maximize the
maintenance ensures long-
lifespan of metric flanges.
term performance.
