Structured Manufacturing Data (2026)

Main Flange Body

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

Technical Definition & Core Assembly

A canonical Main Flange Body is characterized by the integration of Mounting Face and Bolt Holes. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel 316L construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The primary structural flange component of a chemical reactor sealing gland assembly.

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Product Specifications

Technical details and manufacturing context for Main Flange Body

Definition
The Main Flange Body serves as the central structural element within a Chemical Reactor Sealing Gland, providing the mounting interface and load-bearing framework that connects the sealing mechanism to the reactor vessel. It ensures proper alignment, distributes mechanical stresses, and maintains the integrity of the sealing system under operational conditions.
Working Principle
The Main Flange Body functions by providing a rigid, precisely machined interface between the reactor vessel and the sealing gland components. It transfers clamping forces evenly across the sealing surfaces, maintains geometric alignment of the gland assembly, and withstands internal pressure and thermal expansion forces during reactor operation.
Common Materials
Stainless Steel 316L
Technical Parameters
  • Nominal diameter and bolt circle dimensions matching reactor flange specifications (mm) Per Request
Components / BOM
  • Mounting Face Part
    Provides flat sealing surface for gasket installation against reactor vessel
  • Bolt Holes Part
    Accepts mounting bolts to secure the gland assembly to the reactor
  • Gland Interface Surface Part
    Machined surface for attaching sealing gland components and mechanisms

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Main Flange Body.

chemical reactor main flange body stainless steel 316L flange component sealing gland assembly flange reactor mounting face flange industrial chemical flange body

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 150 bar (2175 psi)
other spec: Slurry concentration up to 40% solids by weight, flow rate dependent on flange size and system design
temperature: -40°C to 400°C
Media Compatibility
✓ Acidic chemical media (pH 2-6) ✓ High-purity pharmaceutical solutions ✓ Corrosive slurry mixtures
Unsuitable: Hydrofluoric acid environments
Sizing Data Required
  • Reactor operating pressure (bar/psi)
  • Flange nominal diameter (mm/inches)
  • Required sealing surface finish (Ra value in μm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Gasket failure
Cause: Improper bolt torque leading to uneven compression, material degradation from chemical exposure, or thermal cycling causing creep relaxation
Flange face corrosion/pitting
Cause: Electrochemical corrosion due to dissimilar metals, chemical attack from process fluids, or erosion from high-velocity particulate flow
Maintenance Indicators
  • Visible fluid leakage around flange gasket interface
  • Audible hissing or whistling indicating pressure loss through compromised seal
Engineering Tips
  • Implement controlled bolt tightening sequence with calibrated torque wrenches to ensure even gasket compression and proper flange alignment
  • Apply appropriate protective coatings on flange faces and use corrosion-resistant gasket materials compatible with process media and operating temperatures

Compliance & Manufacturing Standards

Reference Standards
ISO 7005-1:2011 (Flanges for pipes, valves, fittings) ASME B16.5:2020 (Pipe Flanges and Flanged Fittings) DIN EN 1092-1:2018 (Flanges and their joints)
Manufacturing Precision
  • Bore Diameter: +/- 0.05 mm
  • Flange Face Flatness: 0.1 mm per 300 mm diameter
Quality Inspection
  • Dye Penetrant Test (for surface defects)
  • Dimensional Verification (using CMM or precision gauges)

Factories Producing Main Flange Body

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.

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Frequently Asked Questions

What is the primary function of the main flange body in chemical manufacturing?

The main flange body serves as the primary structural component in chemical reactor sealing gland assemblies, providing secure mounting, pressure containment, and interface connections for safe chemical processing operations.

Why is Stainless Steel 316L the preferred material for this flange body?

Stainless Steel 316L offers superior corrosion resistance against harsh chemicals, excellent high-temperature stability, and enhanced durability in corrosive environments typical of chemical manufacturing processes.

What are the critical specifications to consider when selecting this flange body?

Key specifications include pressure rating, temperature range, dimensional accuracy of bolt holes, surface finish of gland interface, flatness of mounting face, and compliance with industry standards like ASME B16.5 for chemical applications.

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 Chemical 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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