Industry-Verified Manufacturing Data (2026)

Tank Structure

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Tank Structure used in the Other Transport Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Tank Structure is characterized by the integration of Tank Shell Plates and Stiffeners. In industrial production environments, manufacturers listed on CNFX commonly emphasize Marine-grade steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The structural framework and containment system of ballast tanks in marine vessels.

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Product Specifications

Technical details and manufacturing context for Tank Structure

Definition
The tank structure refers to the engineered framework, walls, and containment system that forms the physical boundaries of ballast tanks in ships and other marine vessels. It is designed to withstand hydrostatic pressure, contain ballast water, and maintain structural integrity under various loading conditions during vessel operations.
Working Principle
The tank structure provides a sealed, pressure-resistant enclosure for ballast water storage. It transfers hydrostatic and dynamic loads to the vessel's hull structure while preventing water leakage and maintaining the vessel's stability and trim through controlled ballast water management.
Common Materials
Marine-grade steel
Technical Parameters
  • Thickness of structural plates and stiffeners (mm) Standard Spec
Components / BOM
  • Tank Shell Plates
    Forms the primary containment walls of the tank
    Material: Marine-grade steel
  • Stiffeners
    Provides structural reinforcement against hydrostatic pressure
    Material: Steel profiles
  • Welded Joints
    Connects structural elements and ensures watertight integrity
    Material: Welding consumables
Engineering Reasoning
0-0.3 bar (gauge pressure) for atmospheric ballast tanks, 0-2.0 bar for pressurized ballast systems
Yield stress of structural steel (typically 250-355 MPa) exceeded, or fatigue crack propagation reaching critical length (typically 25-40 mm in marine-grade steel)
Design Rationale: Stress corrosion cracking in seawater environment (chloride-induced), particularly at stress concentrations exceeding 0.6σ_y, combined with cyclic loading from wave-induced hull bending moments (typically 10^6-10^8 cycles over vessel lifespan)
Risk Mitigation (FMEA)
Trigger Corrosion rate exceeding 0.1 mm/year in seawater due to inadequate cathodic protection (potential below -0.85V vs Ag/AgCl reference)
Mode: Localized wall thinning below minimum thickness requirement (typically 6-12 mm for marine steel plates), leading to structural buckling under hydrostatic load
Strategy: Implementation of impressed current cathodic protection system maintaining -0.95 to -1.05V potential, combined with 3 mm corrosion allowance in structural design
Trigger Resonant vibration at natural frequency of tank structure (typically 8-15 Hz) matching main engine excitation frequencies
Mode: High-cycle fatigue failure initiating at weld toe locations where stress concentration factors exceed 2.5
Strategy: Structural stiffener redesign to shift natural frequency above 20 Hz, combined with post-weld toe grinding to reduce stress concentration factors below 1.8

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tank Structure.

Ballast Tank Structure Tank Framework marine ballast tank structural framework marine-grade steel tank shell plates ballast tank stiffeners and welded joints tank containment system for marine vessels ballast tank structure manufacturing specifications

Applied To / Applications

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

Ballast Tanks
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 0.5 bar (gauge)
flow rate: N/A (static containment)
temperature: -20°C to 80°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ seawater ✓ freshwater ✓ ballast sediment slurry
Unsuitable: hydrochloric acid (corrosive to structural steel)
Sizing Data Required
  • Required ballast volume (m³)
  • Vessel displacement and stability requirements
  • Structural load capacity of tank supports

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion (Internal/External)
Cause: Chemical attack from stored contents (e.g., acids, salts) or atmospheric exposure leading to wall thinning, pitting, or stress corrosion cracking, often accelerated by moisture, temperature, or coating breakdown.
Structural Fatigue or Cracking
Cause: Cyclic loading from thermal expansion/contraction, pressure fluctuations, or mechanical vibrations, leading to crack initiation and propagation at weld seams, nozzles, or base plate connections.
Maintenance Indicators
  • Visible leaks, weeping, or bulging on tank walls or seams, indicating material failure or overpressure.
  • Abnormal audible sounds like cracking, popping, or hissing, suggesting structural stress, corrosion activity, or pressure release.
Engineering Tips
  • Implement regular non-destructive testing (NDT) such as ultrasonic thickness gauging and visual inspections to monitor corrosion rates and detect early-stage defects.
  • Ensure proper cathodic protection and maintain protective coatings to prevent corrosion, and control operational parameters (e.g., temperature, pressure) within design limits to reduce stress cycles.

Compliance & Manufacturing Standards

Reference Standards
ISO 28300: Petroleum, petrochemical and natural gas industries - Shell-and-tube heat exchangers ANSI/ASME BPV Code Section VIII: Rules for Construction of Pressure Vessels DIN 28018: Vertical cylindrical steel tanks for the storage of liquids above ground - General principles
Manufacturing Precision
  • Wall thickness: +/-5% of nominal thickness
  • Circularity: Maximum deviation of 1% of nominal diameter
Quality Inspection
  • Hydrostatic Pressure Test
  • Ultrasonic Thickness Testing

Factories Producing Tank Structure

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

S Sourcing Manager from Brazil Feb 01, 2026
★★★★★
"Great transparency on the Tank Structure components. Essential for our Other Transport Equipment Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from Canada Jan 29, 2026
★★★★☆
"The Tank Structure we sourced perfectly fits our Other Transport Equipment Manufacturing production line requirements. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United States Jan 26, 2026
★★★★★
"Found 28+ suppliers for Tank Structure on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

7 sourcing managers are analyzing this specification now. Last inquiry for Tank Structure from Mexico (1h ago).

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Frequently Asked Questions

What materials are used in tank structures for marine ballast systems?

Tank structures for marine ballast systems are constructed from marine-grade steel, which offers superior corrosion resistance and durability in harsh marine environments.

What components are included in the BOM for a ballast tank structure?

The bill of materials includes stiffeners for structural support, tank shell plates for containment, and welded joints to ensure watertight integrity and structural stability.

How do tank structures contribute to vessel stability and safety?

Tank structures provide the essential framework for ballast systems, allowing precise weight distribution to maintain vessel stability, trim, and safety during various operating conditions.

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Other Transport Equipment Manufacturing sector.

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