INDUSTRY COMPONENT

Flanges

Flanges are mechanical components used to connect pipes, valves, pumps, and other equipment in structural steel channel sections, providing a secure, leak-proof joint.

Component Specifications

Definition
Flanges are flat, circular discs with evenly spaced bolt holes around their perimeter, designed to be attached to the ends of pipes, valves, or other equipment. In structural steel channel sections, they serve as critical connection points that allow for assembly, disassembly, and maintenance of the structure. They ensure alignment, distribute loads, and prevent leakage by compressing a gasket between mating surfaces when bolts are tightened.
Working Principle
Flanges work by creating a bolted, sealed connection between two mating surfaces. When bolts are tightened through aligned holes, they compress a gasket placed between the flanges, forming a pressure-tight seal. This allows for the transfer of mechanical loads and fluids while maintaining structural integrity and preventing leaks.
Materials
Typically made from carbon steel (e.g., ASTM A105, A350 LF2), stainless steel (e.g., ASTM A182 F304/316), or alloy steel, chosen based on strength, corrosion resistance, and application requirements such as pressure and temperature.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Diameter50-600 mm
Face TypeRaised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Thickness6-40 mm
Bolt CircleAs per ASME B16.5
Pressure Rating150-2500 PSI

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 2633, ASME B16.5, EN 1092-1

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Improper bolt tightening can lead to leaks or joint failure
  • Material corrosion in harsh environments
  • Misalignment during installation causing stress concentrations
FMEA Triads
Trigger: Incorrect gasket selection or installation
Failure: Leakage at the flange joint
Mitigation: Use appropriate gasket materials and follow torque specifications during assembly
Trigger: Over-tightening of bolts
Failure: Bolt or flange damage, leading to joint failure
Mitigation: Adhere to recommended torque values and use calibrated tools

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Dimensional tolerances as per ASME B16.5 (e.g., ±0.8 mm for bolt hole spacing)
Test Method
Pressure testing (hydrostatic or pneumatic), visual inspection, dimensional checks, and material certification to ASTM standards

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 Flanges

Manufacturer profiles associated with Flanges.

Sourcing Flanges from China?
Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.
Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Related Components

Mounting Interface
Precision mounting interface connecting punch tips to pharmaceutical tablet press machines for accurate tablet production.
Chrome Plating
Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.
Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Frequently Asked Questions

What are the common types of flanges used in structural steel?

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

How do I select the right flange material?

Select based on application requirements: carbon steel for general use, stainless steel for corrosion resistance, and alloy steel for high-temperature or high-pressure environments.

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.

Request Manufacturing Insight for Flanges

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
Yoke Bracket
Get QuotesChat