Descaling Header/Manifold for Hot Rolling

Product Specifications

Technical details and manufacturing context for Descaling Header/Manifold

Definition

The Descaling Header/Manifold is a critical component within a Hydraulic Descaling System used in steel and metal manufacturing. It serves as the central distribution point that receives high-pressure water from pumps and evenly distributes it to multiple descaling nozzles arranged along the header. This ensures uniform scale removal from the surface of hot metal slabs, billets, or strips as they pass through the rolling mill, improving surface quality and preventing defects in the final product. The header/manifold is typically constructed from stainless steel (304/316), carbon steel with protective coating, or high-strength alloy steel, depending on the application requirements. It is available in lengths from 500 to 3000 mm, with end connections from DN25 to DN100 (flanged or threaded), and pressure ratings from PN16 to PN40. Operating pressure ranges from 1.0 to 1.6 MPa, with flow rates per nozzle from 50 to 200 L/min. Fluid temperature should be maintained between 10 and 70°C to avoid cavitation, while ambient temperature for storage and operation is -10 to 60°C. The manifold's weight varies from 20 to 150 kg, and surface treatment typically includes zinc plating for corrosion protection. Material grade for carbon steel components is often ASTM A105. These parameters are reference ranges and must be verified for the specific model and application. The manifold is designed to ensure consistent pressure and flow to all nozzles simultaneously, creating a curtain of high-velocity water that impacts the hot metal surface, causing thermal shock and mechanical force that removes oxide scale (mill scale). Proper selection and maintenance are essential for optimal performance and longevity.

Working Principle

High-pressure water (typically 150-400 bar) enters the header/manifold from the pump system. The internal channels and chambers distribute the water flow evenly to multiple outlet ports where descaling nozzles are mounted. The manifold design ensures consistent pressure and flow to all nozzles simultaneously, creating a curtain of high-velocity water that impacts the hot metal surface, causing thermal shock and mechanical force that removes oxide scale (mill scale).

Common Materials

Stainless Steel (304/316), Carbon Steel with protective coating, High-strength alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa
Flow Rate	50–200 L/min	Per nozzle; depends on nozzle size
Fluid Temperature	10–70 °C	Above 70°C may cause cavitation
Ambient Temperature	-10–60 °C	For storage and operation
Material Grade	ASTM A105	Carbon steel for high pressureASTM A105
End Connection	DN25–DN100 mm	Flanged or threadedISO 7005
Length	500–3000 mm	Customizable per mill width
Weight	20–150 kg	Depends on size and material
Surface Treatment	Zinc plating	Corrosion protectionASTM B633
Pressure Rating	PN16–PN40 bar	Matches operating pressureISO 7268

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

Header Body
Main pressure vessel that distributes water to nozzles

Material: Stainless steel or carbon steel
Nozzle Ports Part
Threaded or flanged connections for mounting descaling nozzles

Material: Stainless steel
Inlet Connection Part
High-pressure connection to pump system

Material: Forged steel with high-pressure rating
Mounting Brackets Part
Secure the header to the descaling system frame

Material: Carbon steel
Pressure Relief Port Optional Part
Optional safety feature to prevent overpressure

Material: Stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Descaling Header/Manifold.

Applied To / Applications

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

Hydraulic Descaling System

View system integration details

Manufacturers of Descaling Header/Manifold

Manufacturer profiles associated with Descaling Header/Manifold.

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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 · Page last updated 6 September 2026

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Frequently Asked Questions

What is the operating pressure range for this descaling header/manifold?

The operating pressure range is 1.0 to 1.6 MPa. Always verify the exact pressure rating for your specific model and application with the manufacturer.

What materials are available for the descaling header/manifold?

Available materials include stainless steel (304/316), carbon steel with protective coating, and high-strength alloy steel. For carbon steel, the material grade is often ASTM A105. Confirm the material suitability for your operating conditions with the supplier.

What are the typical flow rates per nozzle?

The flow rate per nozzle is typically 50 to 200 L/min, depending on nozzle size. This is a reference range; the actual flow rate must be confirmed based on the nozzle specifications and system design.

What temperature limits should be observed?

The fluid temperature should be between 10 and 70°C; above 70°C may cause cavitation. The ambient temperature for storage and operation is -10 to 60°C. Always adhere to these limits to ensure proper function and avoid damage.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 400 bar (5800 psi) - typical for high-pressure descaling systems
flow rate:	50-500 L/min (13-132 GPM) per header, depending on nozzle count and size
temperature:	Ambient to 80°C (176°F) - limited by seal materials and thermal expansion
slurry concentration:	Up to 5% solids by weight - higher concentrations risk abrasion and clogging

Descaling Header/Manifold

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards