INDUSTRY COMPONENT

Flange Connections

Flange connections are mechanical joints used to connect pipes, valves, pumps, and other equipment in barrel assemblies, providing a secure, leak-proof seal.

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Component Specifications

Definition
A flange connection is a type of mechanical joint that uses flanges—flat, circular discs with bolt holes—to connect sections of pipes, valves, or other components in industrial systems, such as barrel assemblies. It typically involves two flanges aligned and bolted together with a gasket inserted between them to create a pressure-tight seal. These connections are designed to withstand operational stresses, including pressure, temperature, and vibration, and are commonly used in applications requiring easy assembly, disassembly, and maintenance.
Working Principle
Flange connections work by clamping two flanges together with bolts, compressing a gasket between them to form a seal. The bolts apply a clamping force that ensures the gasket deforms to fill any surface imperfections, preventing leaks. The connection relies on proper bolt torque and gasket selection to maintain integrity under varying pressures and temperatures.
Materials
Common materials include carbon steel (ASTM A105), stainless steel (ASTM A182), alloy steel, and non-metallic options like PVC or fiberglass for corrosive environments. Gaskets are made from materials such as rubber, graphite, PTFE, or metal, depending on temperature and pressure requirements.
Technical Parameters
  • Diameter 50-500 mm
  • Bolt Size M10 to M24
  • Flange Face Raised face (RF), flat face (FF), ring-type joint (RTJ)
  • Pressure Rating PN10 to PN100
  • Temperature Range -50°C to 500°C
Standards
ISO 7005, DIN 2501, ASME B16.5, EN 1092-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Flange Connections.

flange connection barrel assembly mechanical joint pipe flange gasket bolt torque industrial fastening pressure seal ISO standards Flange Connections Flange Connections in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Barrel Assembly

The main housing component of an extrusion machine that contains and guides the material through the extrusion process.

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Condenser Shell/Body

The outer structural housing that contains and supports the internal components of a vent condenser.

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Column Body

The main structural component of a column that provides support and houses internal mechanisms.

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Engineering Analysis

Risks & Mitigation
  • Leakage due to improper gasket installation
  • Bolt fatigue from vibration or thermal cycling
  • Corrosion in harsh environments
  • Misalignment causing stress concentrations
FMEA Triads
Trigger: Incorrect bolt torque
Failure: Gasket blowout or leakage
Mitigation: Use calibrated torque wrenches and follow tightening sequences.
Trigger: Gasket material degradation
Failure: Seal failure under high temperature
Mitigation: Select gaskets rated for operational temperature and chemical exposure.
Trigger: Flange face damage
Failure: Poor seal formation
Mitigation: Inspect and machine flange faces as needed before assembly.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Flange flatness within 0.1 mm per ISO 7005, bolt hole alignment within ±1 mm
Test Method
Pressure testing per ISO 5208, visual inspection, and torque verification

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the common types of flange connections?

Common types include weld neck, slip-on, threaded, socket weld, and blind flanges, each suited for different pressure and assembly needs.

How do you prevent leaks in flange connections?

Prevent leaks by using the correct gasket material, applying proper bolt torque in a star pattern, and ensuring flange faces are clean and aligned.

What standards apply to flange connections?

Key standards include ISO 7005 for dimensions, ASME B16.5 for pressure ratings, and DIN 2501 for design specifications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Flange Body Flange Face