Editorial Technical Reference

Pressure Vessel Quality Steel Plate

This page explains how Pressure Vessel Quality Steel Plate is classified within Manufacture of Tanks, Reservoirs and Containers of Metal. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Specialized steel plate manufactured for constructing metal pressure vessels and tanks

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Product Specifications

Technical details and manufacturing context for Pressure Vessel Quality Steel Plate

Definition
Pressure Vessel Quality (PVQ) steel plate is a semi-finished industrial material specifically engineered for fabricating metal tanks, reservoirs, and pressure containers. It undergoes stringent manufacturing controls and testing to ensure exceptional mechanical properties, weldability, and resistance to internal pressures and corrosive environments. This material is essential for constructing storage tanks for chemicals, petroleum products, liquefied gases, and industrial process vessels where structural integrity under pressure is critical. Its production follows rigorous quality standards to guarantee reliability in demanding applications. The plate is available in carbon steel and low-alloy steel grades, with thicknesses ranging from 6 to 120 mm, widths from 1500 to 4000 mm, and lengths from 3000 to 12000 mm, as referenced in GB/T 713. Mechanical properties include yield strength from 245 to 620 MPa, tensile strength from 400 to 820 MPa, and elongation from 18% to 30%. Charpy V-notch impact testing is performed at temperatures from -40°C to 0°C. Operating temperature ranges from -40°C to 400°C, and operating pressure from 1.0 to 1.6 MPa. Density is typically 7.85 g/cm³ for carbon steel. Surface finish is 2B per ASTM A480, flatness tolerance is ≤5 mm/m per GB/T 709, and 100% ultrasonic testing per GB/T 2970 ensures internal soundness. These parameters are reference ranges; actual values must be confirmed for the specific grade and application. Always verify compliance with the relevant standards and the legal manufacturer or supplier.
Working Principle
The plate forms the structural shell of a pressure vessel, containing internal pressure through its high strength, ductility, and fracture toughness. It distributes stress loads across the vessel walls, preventing failure under cyclic or static pressure. The material's weldability allows for fabrication of complex geometries, while its corrosion resistance protects against process media. Proper selection of thickness and grade ensures the vessel meets design pressure and temperature requirements.
Common Materials
Carbon Steel, Low-Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
ThicknessRequired6–120 mmNominal plate thicknessGB/T 713
WidthRequired1500–4000 mmPlate width dimensionGB/T 713
LengthRequired3000–12000 mmPlate length dimensionGB/T 713
Yield StrengthRequired245–620 MPaMinimum yield strength at room temperatureGB/T 713
Tensile StrengthRequired400–820 MPaUltimate tensile strength rangeGB/T 713
Impact Test Temperature-40–0 °CTemperature for Charpy V-notch impact testingGB/T 713
Elongation18–30 %Minimum elongation for ductilityGB/T 713
Operating Temperature-40–400 °CDepends on grade and design
Density7.85 g/cm³Typical for carbon steel
Surface Finish2BStandard finish for pressure vessel platesASTM A480
Flatness Tolerance≤5 mm/mEnsures proper fit-up during fabricationGB/T 709
Ultrasonic Testing100 %Full volumetric inspection for internal soundnessGB/T 2970

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
  • Steel Alloy Matrix Part
    Primary structural material providing strength and toughness
    Material: Iron-carbon alloy with controlled manganese, silicon, and microalloying elements
  • Grain Structure Part
    Determines mechanical properties and fracture resistance
    Material: Fine-grained ferrite-pearlite microstructure
  • Surface Scale Optional Part
    Oxide layer formed during hot rolling
    Material: Iron oxides (mill scale)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pressure Vessel Quality Steel Plate.

PVQ Steel Plate Pressure Vessel Steel Tank Quality Steel Boiler Quality Plate

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 1000 psi (design dependent, ASME BPVC Section VIII Div. 1 compliant)
other spec: Minimum yield strength: 36-70 ksi, Charpy V-notch impact tested, ultrasonic tested per ASTM A578
temperature: -50°C to 350°C (depending on grade and heat treatment)
Media Compatibility
✓ Compressed air storage tanks ✓ LPG/propane vessels ✓ Industrial chemical reactors (non-corrosive media)
Unsuitable: Hydrochloric acid service (highly corrosive chloride environment)
Sizing Data Required
  • Design pressure (MAWP)
  • Design temperature (minimum and maximum)
  • Vessel diameter and length (volume requirements)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress Corrosion Cracking
Cause: Combination of tensile stress from internal pressure and corrosive environment (e.g., chlorides, sulfides) leading to crack propagation in susceptible steel microstructures.
Hydrogen-Induced Cracking
Cause: Hydrogen absorption from process fluids or cathodic protection, causing embrittlement and crack formation, particularly in high-strength steel plates with inclusions or hard zones.
Maintenance Indicators
  • Visible surface cracks, blistering, or localized bulging on the plate exterior
  • Sudden pressure fluctuations or abnormal acoustic emissions (hissing, popping) during operation
Engineering Tips
  • Implement regular non-destructive testing (e.g., ultrasonic, magnetic particle inspection) to detect subsurface flaws before they propagate
  • Control process parameters to minimize thermal cycling and corrosive exposure, and apply protective coatings compatible with service conditions

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM A516/A516M - Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service EN 10028-2 - Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties ASME SA-516 - Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service

Quoted from the published standard.

Manufacturing Precision
  • Thickness: +/- 0.25mm for plates up to 10mm thickness
  • Flatness: Maximum deviation of 5mm per meter length
Quality Inspection
  • Ultrasonic Testing (UT) for internal defects and laminations
  • Tensile Test to verify yield strength, tensile strength, and elongation properties

Manufacturers of Pressure Vessel Quality Steel Plate

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.

Shandong Huitong Steel Co., Ltd.
Fujian, CN
Also makes: Hot-Rolled Carbon Steel Plate, Galvanized Steel Coil, High-Strength Structural Steel Plate and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry
Shandong Longhao Steel Group Co., Ltd.
Shandong, CN
Also makes: Hot-Rolled Carbon Steel Plate, Galvanized Steel Coil, High-Strength Abrasion-Resistant Steel Plate and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

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

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What standards apply to PVQ steel plate?

The plate is referenced under GB/T 713 for dimensions and mechanical properties, GB/T 709 for flatness, GB/T 2970 for ultrasonic testing, and ASTM A480 for surface finish. Always confirm compliance with the legal manufacturer or supplier.

What thickness ranges are available?

Nominal thickness ranges from 6 to 120 mm, as per GB/T 713. The actual thickness for a specific application must be verified with the supplier.

Can this plate be used for high-temperature service?

The operating temperature range is -40°C to 400°C, depending on grade and design. Confirm the maximum allowable temperature with the manufacturer.

How is the plate tested for quality?

The plate undergoes 100% ultrasonic testing per GB/T 2970 to ensure internal soundness. Mechanical tests include Charpy V-notch impact at specified temperatures. Verify test reports with the supplier.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

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

Preliminary Technical Classification
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