INDUSTRY COMPONENT

Flange

A flange is a protruding rim or collar used to connect structural steel I-beams, providing secure attachment points for bolts or welding.

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Component Specifications

Definition
In industrial engineering, a flange is a critical structural component designed as a projecting flat rim or collar, typically integrated into or attached to structural steel I-beams. It serves as a reinforced connection interface that distributes mechanical loads, resists bending moments, and enables secure joining of beams through bolting, riveting, or welding. Flanges are engineered to maintain structural integrity under tension, compression, and shear forces in construction and machinery frameworks.
Working Principle
Flanges function by providing a broad, flat surface area that increases the contact zone between connected I-beam sections. This distributes stress concentrations, prevents localized deformation, and enhances load-bearing capacity. The flange's geometry allows for precise alignment and secure fastening, transferring forces efficiently across the joint while maintaining structural stability.
Materials
Typically manufactured from structural steel grades such as ASTM A36, A572, or A992, with carbon content 0.20-0.30%, yield strength 250-450 MPa. May include alloy steel variants for high-stress applications. Surface treatments include hot-dip galvanizing, painting, or powder coating for corrosion resistance.
Technical Parameters
  • Width 100-300 mm
  • Thickness 10-40 mm
  • Hole Pattern Standardized spacing per engineering drawings
  • Surface Finish Mill scale removed, Sa 2.5 blasted if coated
  • Bolt Hole Diameter 16-30 mm
  • Flatness Tolerance ±1.5 mm/m
Standards
ISO 4014, ISO 4016, DIN 7990, ASTM A325, EN 10025

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Flange.

steel flange I-beam connector structural flange beam connection industrial fastening metal flange construction flange machinery flange Flange Flange in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Structural Steel I-Beam

Hot-rolled structural steel beam with I-shaped cross-section for load-bearing frameworks.

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Underflow Apex

The conical discharge section at the bottom of a hydrocyclone separator that collects and directs the denser underflow stream.

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Submerged Entry Nozzle (SEN)

A refractory component that directs molten steel from the tundish into the mold while submerged below the metal surface.

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Engineering Analysis

Risks & Mitigation
  • Improper alignment causing stress concentrations
  • Corrosion in untreated steel reducing load capacity
  • Fatigue failure from cyclic loading
  • Bolt loosening due to vibration
FMEA Triads
Trigger: Incorrect bolt torque during installation
Failure: Joint loosening leading to structural instability
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications
Trigger: Exposure to corrosive environments without protection
Failure: Material degradation and reduced cross-sectional strength
Mitigation: Apply appropriate coatings (galvanizing, painting) and implement regular inspection schedules
Trigger: Design exceeding material yield strength
Failure: Plastic deformation or fracture under load
Mitigation: Conduct structural analysis and select appropriate steel grade with safety factors

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m, flatness within 0.1% of width, hole alignment within ±0.5 mm
Test Method
Ultrasonic testing for material defects, dimensional verification with CMM, load testing per ASTM E8/E8M

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 is the primary purpose of a flange on an I-beam?

The flange provides a reinforced connection point for joining I-beams securely, distributing loads and preventing structural failure at joints.

Can flanges be welded or bolted?

Yes, flanges are designed for both welding and bolting methods, with standardized hole patterns for bolt connections and prepared edges for welding.

What materials are commonly used for industrial flanges?

Structural steel grades like ASTM A36 and A992 are most common, with alloy steels used for high-stress applications and coatings for corrosion protection.

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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Fixture Base Plate Flange (if applicable)