Structured Manufacturing Data (2026)

Forged Steel Flange

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Forged Steel Flange used in the Basic Metal Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Forged Steel Flange is characterized by the integration of Flange Body and Bolt Holes. In industrial production environments, manufacturers listed on CNFX commonly emphasize carbon steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Metal ring connecting pipes, valves, or equipment

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Product Specifications

Technical details and manufacturing context for Forged Steel Flange

Definition
A forged steel flange is a circular metal component with bolt holes used to connect pipes, valves, pumps, and other equipment in industrial piping systems. It provides a strong, leak-proof joint that can withstand high pressure and temperature conditions. These flanges are manufactured through metal forging processes for superior strength and durability compared to cast alternatives. They are standardized components sold individually in B2B supply chains for assembly into larger systems.
Working Principle
Creates sealed connection between components via bolted assembly with gasket
Common Materials
carbon steel, stainless steel, alloy steel
Technical Parameters
  • Maximum working pressure (bar) Standard Spec
  • Maximum operating temperature (°C) Standard Spec
Components / BOM
  • Flange Body Part
    Main structural ring
    Material: Steel
  • Bolt Holes Part
    Fastener mounting points
    Material: Steel
  • Sealing Face Part
    Gasket contact surface
    Material: Steel
  • Hub Optional Part
    Pipe connection section
    Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Forged Steel Flange.

forged flange steel flange carbon steel forged steel flange high pressure forged steel flange stainless steel industrial flange forged steel flange specifications metal forging flange BOM

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 2500 psi (172 bar) for standard ANSI B16.5 Class 150-2500
other spec: Flow Rate: Dependent on pipe size and system design; Slurry Concentration: Suitable for moderate abrasion, not recommended for highly erosive slurries >40% solids by weight
temperature: -20°C to 540°C (-4°F to 1004°F)
Media Compatibility
✓ High-pressure steam systems ✓ Hydrocarbon processing (oil/gas) ✓ Chemical processing with non-corrosive media
Unsuitable: Highly corrosive environments with concentrated acids (e.g., hydrochloric acid >10%)
Sizing Data Required
  • Nominal Pipe Size (NPS) and schedule/thickness
  • Pressure Class Rating (e.g., ANSI 150, 300, 600)
  • Flange facing type and dimensions (e.g., RF, FF, RTJ)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress corrosion cracking
Cause: Combination of tensile stress from bolting/thermal cycling and corrosive environment (e.g., chlorides, sulfides) attacking the steel microstructure
Flange face distortion/warping
Cause: Excessive bolt torque during installation causing uneven stress distribution, or thermal shock from rapid temperature changes exceeding material yield strength
Maintenance Indicators
  • Visible radial cracks or pitting corrosion on flange face or hub region
  • Audible hissing or detectable gas leak at flange connection during pressure testing
Engineering Tips
  • Implement controlled bolt tightening sequence using calibrated torque wrenches with cross-pattern tightening to ensure even gasket compression
  • Apply protective coatings (e.g., zinc-rich epoxy) on flange exterior surfaces and specify compatible gasket materials to prevent galvanic corrosion

Compliance & Manufacturing Standards

Reference Standards
ASTM A105/A105M - Standard Specification for Carbon Steel Forgings for Piping Applications ASME B16.5 - Pipe Flanges and Flanged Fittings ISO 7005-1 - Metallic flanges - Part 1: Steel flanges
Manufacturing Precision
  • Bore Diameter: +/- 0.02 mm
  • Flange Face Flatness: 0.1 mm
Quality Inspection
  • Dye Penetrant Test (PT) for surface defects
  • Ultrasonic Testing (UT) for internal flaws

Factories Producing Forged Steel Flange

Manufacturer profiles with relevant production capability in China

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

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.

Supply Chain Commonly Integrated Components

Signal Processor

Electronic device that conditions, amplifies, filters, and converts raw sensor signals into standardized outputs for temperature measurement systems

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Purge Air System

A system that provides controlled airflow to clear optical paths and protect sensors in molten metal temperature measurement applications.

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Degassing Chamber

A specialized vessel within a molten metal degassing system where dissolved gases are removed from molten metal through controlled processes.

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Gas Control System

A system that regulates and controls the flow, pressure, and composition of gases used in molten metal degassing processes.

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Frequently Asked Questions

What are the main materials used in forged steel flanges?

Forged steel flanges are typically manufactured from carbon steel, stainless steel, or alloy steel, each offering different properties for corrosion resistance, strength, and temperature tolerance.

What pressure classes are available for forged steel flanges?

Forged steel flanges come in various pressure classes (e.g., 150, 300, 600, 900, 1500, 2500) to meet different industrial requirements for high-pressure piping systems.

How do I determine the correct forged steel flange specifications for my application?

Key specifications include nominal diameter, bolt circle diameter, number of bolt holes, flange thickness, and pressure class. Consult industry standards like ASME B16.5 and consider your system's pressure, temperature, and material compatibility requirements.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Basic Metal Manufacturing.

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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