Flange Plate: Diameter 50-600 mm, Thickness 5-50 mm

Component Specifications

Definition

A flange plate is a critical mechanical component designed to facilitate the connection of two sections of piping or equipment. It typically features a flat, circular shape with a central bore and a series of bolt holes arranged around its perimeter. The primary function is to create a strong, pressure-resistant, and leak-proof joint when bolted to a mating flange, often with a gasket inserted between them. It is integral to flange assemblies in various industrial systems, enabling assembly, disassembly, and maintenance.

Working Principle

The flange plate works by providing a mating surface that, when aligned with another flange and compressed together with bolts, creates a sealed connection. The applied bolt torque generates clamping force, which compresses a gasket between the flanges to form a tight seal, preventing fluid or gas leakage while withstanding internal pressure and mechanical loads.

Materials

Common materials include carbon steel (e.g., ASTM A105), stainless steel (e.g., ASTM A182 F304/F316), alloy steel, and sometimes ductile iron or aluminum, selected based on pressure, temperature, corrosion resistance, and application requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	50-600 mm
Face Type	Raised face, flat face, ring-type joint
Thickness	5-50 mm
Bolt Holes	4-24 holes
Pressure Rating	150-2500 psi
Bolt Circle Diameter	Varies by standard

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 7005, DIN 2501, ASME B16.5, ANSI B16.5

Parent Products

This component is used in the following industrial products

Flange Assembly

A structural component that provides mechanical connection and sealing interface in high-voltage insulating bushings.

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Mast Sections

Segmented structural components that form the vertical support structure of a mast.

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Engineering Analysis

Risks & Mitigation

Leakage due to improper gasket installation or bolt torque
Corrosion from incompatible materials or harsh environments
Mechanical failure under excessive pressure or vibration
Misalignment during assembly leading to joint stress

FMEA Triads

Trigger: Insufficient bolt torque
Failure: Leakage at the joint
Mitigation: Follow torque specifications and use calibrated tools

Trigger: Material corrosion
Failure: Structural weakening and potential rupture
Mitigation: Select corrosion-resistant materials and apply protective coatings

Trigger: Gasket degradation
Failure: Seal failure and leakage
Mitigation: Use compatible gaskets and replace periodically

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ASME B16.5, e.g., bolt hole spacing ±0.8 mm, face flatness within 0.05 mm

Test Method

Pressure testing (hydrostatic or pneumatic), visual inspection, dimensional checks, material certification (e.g., mill test reports)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Flange Plate

Manufacturer profiles associated with Flange Plate.

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Frequently Asked Questions

What is the purpose of a flange plate?

It connects pipes or equipment securely, allowing for assembly, disassembly, and maintenance while providing a sealed joint to prevent leaks.

How do you select a flange plate material?

Material selection depends on factors like pressure, temperature, fluid compatibility, and corrosion resistance, with common choices being carbon steel or stainless steel.

What standards apply to flange plates?

Key standards include ASME B16.5, ISO 7005, and DIN 2501, which define dimensions, pressure ratings, and materials.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Flange Plate