Flange (if applicable): Nominal Pipe Size DN15 to DN600

Component Specifications

Definition

A flange is a mechanical component designed to join sections of pipe or connect pipe to a pressure vessel, valve, or other equipment. It consists of a flat, circular ring with bolt holes around its perimeter. Flanges are paired with matching flanges on adjacent components and secured with bolts, compressing a gasket between them to create a leak-proof seal. They facilitate assembly, disassembly, and maintenance in industrial piping systems, allowing for easy access for inspection or modification. Common in outlet connections of machines, flanges ensure secure, standardized interfaces that withstand operational pressures and temperatures.

Working Principle

Flanges work by providing a mating surface for connection between two components. When bolted together, they compress a gasket placed between the flange faces, creating a tight seal that prevents leakage of fluids or gases. The bolt load distributes pressure evenly across the gasket, maintaining integrity under varying thermal and mechanical stresses. Flanges align components precisely, ensuring proper flow and structural support in the system.

Materials

Common materials include carbon steel (ASTM A105), stainless steel (ASTM A182 grades like 304, 316), alloy steel, ductile iron, or non-metallic options like PVC for specific applications. Material selection depends on factors such as corrosion resistance, temperature, pressure, and fluid compatibility.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Face Type	Raised face, flat face, ring-type joint
Thickness	As per ASME B16.5 or equivalent
Pressure Rating	PN6 to PN40, Class 150 to Class 2500
Nominal Pipe Size	DN15 to DN600
Bolt Circle Diameter	Varies by size and standard
Number Of Bolt Holes	4 to 24

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 7005-1, DIN EN 1092-1, ASME B16.5, ASME B16.47

Parent Products

This component is used in the following industrial products

Outlet Connection

The outlet connection is the interface component on a collector body that facilitates the controlled discharge or transfer of collected material, fluid, or gas to downstream systems.

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Engineering Analysis

Risks & Mitigation

Leakage due to improper gasket selection or bolt torque
Corrosion from incompatible materials
Mechanical failure under excessive pressure or vibration
Misalignment causing stress and seal failure

FMEA Triads

Trigger: Incorrect bolt tightening
Failure: Gasket compression loss leading to leaks
Mitigation: Follow torque specifications and use calibrated tools

Trigger: Material degradation from chemical exposure
Failure: Corrosion or cracking compromising integrity
Mitigation: Select corrosion-resistant materials and conduct regular inspections

Trigger: Thermal cycling
Failure: Fatigue and bolt loosening over time
Mitigation: Use appropriate gaskets and retorque bolts periodically

Industrial Ecosystem

Compatible With

Pumps, valves, pressure vessels, piping systems, industrial machinery outlets

Typical Suppliers & Equivalents

Parker Hannifin, Swagelok, Victaulic, GF Piping Systems, Bonney Forge

Compliance & Inspection

Tolerance

Dimensional tolerances as per ASME B16.5: flange thickness ±0.8 mm, bolt hole diameter ±0.4 mm, face flatness within 0.05 mm

Test Method

Pressure testing per ASME B31.3, hydrostatic or pneumatic tests to 1.5 times design pressure; non-destructive testing like ultrasonic or dye penetrant for material flaws

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Flange (if applicable)

Manufacturer profiles associated with Flange (if applicable).

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of a flange in an outlet connection?

A flange provides a standardized, bolted connection point for attaching pipes or equipment to a machine's outlet, ensuring a secure, sealed interface that allows for easy assembly, maintenance, and pressure containment.

How do I select the right flange material?

Choose based on the fluid type, temperature, pressure, and corrosion requirements; common options include carbon steel for general use, stainless steel for corrosive environments, and alloys for high-temperature applications.

What are the common flange standards?

Key standards include ASME B16.5 for dimensions and ratings, ISO 7005-1 for international compatibility, and DIN EN 1092-1 for European specifications, ensuring interchangeability and safety.

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 (if applicable)