Chemical Tank for Pretreatment Washer Systems | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Chemical Tank

Definition

The chemical tank is a critical component of a pretreatment washer system, specifically engineered to store, mix, and supply chemical cleaning agents (such as degreasers, etchants, or conversion coatings) to the washer's spray or immersion modules. It ensures controlled chemical delivery for surface preparation processes like cleaning, degreasing, phosphating, or passivation of metal parts prior to painting or coating. The tank is typically constructed from corrosion-resistant materials such as stainless steel (e.g., 304, 316L), polypropylene (PP), polyethylene (PE), or fiberglass reinforced plastic (FRP), depending on the chemical compatibility and operating conditions. Its nominal capacity ranges from 500 to 5000 liters, with operating temperatures between 20 and 80°C and pressures from 0.1 to 0.6 MPa. Wall thickness varies from 6 to 12 mm, and internal surface roughness is maintained between 0.8 and 1.6 μm Ra to minimize chemical buildup. The tank includes features for safe handling, such as sealed lids, venting, and level sensors. Recirculation or agitation systems may be integrated to maintain solution homogeneity. Electrical components, if present, are rated for insulation resistance of at least 10 MΩ (IEC 60204-1) and ingress protection IP54–IP65 (IEC 60529). Power supply options include 220/380 V AC (IEC 60038). Overall dimensions range from 1500×1200×1500 mm to 5000×2000×2500 mm, with empty weight between 200 and 2000 kg. These values are reference ranges; verify model-specific specifications with the manufacturer.

Working Principle

The tank stores a prepared chemical solution. It is typically connected via pumps and piping to the washer's application system. Level sensors monitor chemical volume, and agitation or recirculation systems may be used to maintain solution homogeneity and concentration. The tank often includes features for safe chemical handling, such as sealed lids, venting, and corrosion-resistant construction. The solution is drawn from the tank and delivered to spray nozzles or immersion baths, where it acts on metal surfaces to remove contaminants or prepare the surface for subsequent coating. The tank's design ensures that the chemical solution is available at the required flow rate and pressure, while maintaining safety and preventing leaks. Proper operation depends on correct chemical concentration, temperature, and level control, which are managed by the tank's instrumentation and control interfaces.

Common Materials

Stainless Steel (e.g., 304, 316L), Polypropylene (PP), Polyethylene (PE), Fiberglass Reinforced Plastic (FRP)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Capacity	500–5000 L	Select based on process flow rate and dwell time.
Operating Temperature	20–80 °C	Above 80°C may degrade gaskets and linings.
Operating Pressure	0.1–0.6 MPa	Below 0.1 MPa insufficient flow; above 0.6 MPa may stress welds.
Wall Thickness	6–12 mm	Thicker for larger tanks or higher specific gravity.
Material Grade	304/316L	316L for chloride-containing chemicals.ASTM A240
Surface Roughness (Internal)	0.8–1.6 μm Ra	Lower roughness reduces chemical buildup.
Leakage Rate	≤0.1 mL/min	At 1.5× working pressure.
Insulation Resistance	≥10 MΩ	For electrical components in tank.IEC 60204-1
Power Supply	220/380 V AC	Three-phase for heaters/pumps.IEC 60038
Overall Dimensions (L×W×H)	1500×1200×1500–5000×2000×2500 mm	Custom sizes available.
Empty Weight	200–2000 kg	Depends on capacity and material thickness.
Ingress Protection	IP54–IP65	For electrical enclosures.IEC 60529

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

Tank Body Part
The primary containment vessel for the chemical solution.

Material: Stainless Steel / Plastic
Lid / Cover Part
Seals the tank to prevent evaporation, contamination, and fume release.

Material: Matching tank material
Agitator / Mixer
Maintains solution homogeneity and prevents settling of chemicals.

Material: Stainless Steel / Plastic
Level Sensor
Monitors the volume of chemical solution in the tank for low-level alerts or automated refilling.

Material: Stainless Steel / Plastic
Drain Valve
Allows for complete drainage of the tank for maintenance, cleaning, or solution changeover.

Material: Stainless Steel / Plastic
Tank Vent
Lets the tank breathe as it fills and drains, and carries chemical fumes away.
Control Interface
Where concentration, temperature and level readings come together and setpoints are entered.

Applied To / Applications

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

Pretreatment Washer

View system integration details

Manufacturers of Chemical Tank

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

Jiangsu Prettech Machinery & Technology Co.,Ltd

Changzhou, Jiangsu, CN

Also makes: Tubular Heat Exchanger, Reagent Storage Tank, Plate Heat Exchanger and 4 more

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

Listed there as: “Chemical Tank”
View source page ↗ prettech.cn · checked 2026-09-09

View profile Send enquiry

Zibo Chunlei Chemical Machinery Co., Ltd.

Zibo, Shandong, CN

Also makes: Heat Exchanger

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

Listed there as: “Chemical Tanks”
View source page ↗ cl-mechanical.com · checked 2026-09-07

View profile Send enquiry

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

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 16 September 2026

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.

Frequently Asked Questions

What materials are available for the chemical tank?

The tank can be made from stainless steel (304 or 316L), polypropylene (PP), polyethylene (PE), or fiberglass reinforced plastic (FRP). The choice depends on the chemical compatibility and operating temperature. For chloride-containing chemicals, 316L is recommended. Verify the material grade with the manufacturer for your specific application.

What is the typical capacity range?

The nominal capacity ranges from 500 to 5000 liters. The selection should be based on the process flow rate and dwell time required for the pretreatment stage. Confirm the exact capacity needed for your system with the manufacturer.

What are the operating temperature and pressure limits?

The operating temperature range is 20 to 80°C. Above 80°C, gaskets and linings may degrade. The operating pressure is 0.1 to 0.6 MPa. Below 0.1 MPa, flow may be insufficient; above 0.6 MPa, welds may be stressed. Always verify these parameters for your specific model.

How is the tank's integrity verified?

The tank's leakage rate is specified as ≤0.1 mL/min at 1.5 times the working pressure. Additionally, electrical components must have insulation resistance ≥10 MΩ (IEC 60204-1) and ingress protection IP54–IP65 (IEC 60529). These are reference values; the manufacturer should provide test certificates for the actual unit.

Data Basis

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

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.

Buyer enquiry

Request manufacturing insight for Chemical Tank

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	0 to 2 bar (gauge)
flow rate:	Up to 50 L/min
temperature:	-10°C to 80°C
slurry concentration:	Up to 20% solids by weight

Chemical Tank

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards