Ductwork System for Exhaust Gas Management

Product Specifications

Technical details and manufacturing context for Ductwork System

Definition

Within Exhaust Gas Management, the ductwork system serves as the critical transportation infrastructure that collects, channels, and directs exhaust gases from various emission sources (such as furnaces, reactors, or process equipment) through the treatment system (scrubbers, filters, etc.) and ultimately to the exhaust stack or discharge point. It ensures controlled flow, prevents gas leakage, and maintains system pressure balance. The system is engineered with proper sizing, routing, and supports to minimize pressure drops, prevent condensation, and resist corrosion while maintaining structural integrity under operational conditions. Materials on file include galvanized steel, stainless steel, and fiberglass reinforced plastic (FRP). Reference parameters include nominal diameter (100–2000 mm per ISO 4200), wall thickness (1.5–12 mm per ISO 4200), operating pressure (1.0–1.6 MPa), operating temperature (-40–200°C), leakage rate (0.1–1.0% per EN 12237), surface roughness (0.8–6.3 µm per ISO 4287), material grade (304–316L per ASTM A240), corrosion allowance (1.5–3.0 mm per ISO 15649), flange rating (PN10–PN40 per EN 1092-1), and weight (10–500 kg/m). These values are directory references and must be confirmed for the actual model and application. The ductwork system operates on principles of fluid dynamics and pressure differentials. Exhaust gases enter through collection hoods or inlets and flow through interconnected ducts due to negative pressure created by exhaust fans. Proper design ensures controlled flow, prevents leakage, and maintains pressure balance. Verification questions for procurement include confirming material compatibility with the specific gas composition, temperature, and pressure; checking compliance with relevant standards; and validating leakage rates and structural supports. Maintenance signals include increased pressure drop, visible corrosion, or leaks. Failure boundaries include structural collapse, excessive leakage, or blockage. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The ductwork system operates on principles of fluid dynamics and pressure differentials. Exhaust gases enter the system through collection hoods or inlets, then flow through interconnected ducts due to negative pressure created by exhaust fans. The system is designed with proper sizing, routing, and supports to minimize pressure drops, prevent condensation, and resist corrosion while maintaining structural integrity under operational conditions.

Common Materials

Galvanized steel, Stainless steel, Fiberglass reinforced plastic (FRP)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	100–2000 mm	Standard sizes for ductworkISO 4200
Wall Thickness	1.5–12 mm	Depends on pressure and corrosion allowanceISO 4200
Operating Pressure	1.0–1.6 MPa
Operating Temperature	-40–200 °C	Material dependent; above 200°C use special alloys
Leakage Rate	0.1–1.0 %	Class A to C; lower for hazardous gasesEN 12237
Surface Roughness	0.8–6.3 µm	Smoother for corrosive mediaISO 4287
Material Grade	304–316L	316L for chloride resistanceASTM A240
Corrosion Allowance	1.5–3.0 mm	Based on service life and mediaISO 15649
Flange Rating	PN10–PN40	Match operating pressureEN 1092-1
Weight	10–500 kg/m	Depends on diameter and wall thickness

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

Components / BOM

Straight Duct Sections Part
Primary transport channels for exhaust gas flow

Material: Galvanized steel
Elbows/Bends Part
Change direction of gas flow with minimal turbulence

Material: Stainless steel
Dampers
Regulate or shut off gas flow in specific duct branches

Material: Carbon steel
Expansion Joints
Compensate for thermal expansion and vibration

Material: Fabric or metal bellows
Support Hangers Part
Provide structural support and maintain proper alignment

Material: Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Exhaust Gas Management

View system integration details

Manufacturers of Ductwork System

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Chinafore

Hangzhou, Zhejiang, CN

Founded 2003250+ staff50,000 square meters

ISO 9001 ISO 14001

Also makes: Condensate Pump, Flexible Duct, Vacuum Pump and 4 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What materials are available for ductwork systems?

Materials on file include galvanized steel, stainless steel, and fiberglass reinforced plastic (FRP). The choice depends on the gas composition, temperature, and corrosion requirements. Always confirm material suitability with the manufacturer.

What are the typical operating pressure and temperature ranges?

Reference ranges are 1.0–1.6 MPa for operating pressure and -40–200°C for temperature. These are directory references; actual limits depend on the specific design and materials. Verify with the supplier.

How is leakage rate specified?

Leakage rate is referenced as 0.1–1.0% per EN 12237, with lower rates for hazardous gases. Confirm the required class for your application and ensure the system meets it.

What standards apply to ductwork components?

Standards referenced include ISO 4200 for dimensions, EN 12237 for leakage, ASTM A240 for material grades, and EN 1092-1 for flanges. These are procurement references; verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar (gauge)
flow rate:	0.5 to 50 m³/s
temperature:	-40°C to 400°C
slurry concentration:	Up to 30% solids by weight

Ductwork System

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards