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Help CenterSteel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）
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Steel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）NegotiableMOQ: 5 Metric Tons -
Steel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）NegotiableMOQ: 5 Metric Tons
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Steel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）NegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）NegotiableMOQ: 5 Metric Tons
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Steel Sheet & Plate & Pressure Vessel Plate，ASME SA-516、SA-387、SA-203、EN 10028（P265GH、P355GH）NegotiableMOQ: 5 Metric Tons
Product Description of Pressure Vessel Steel Plate
Pressure vessel steel plate refers to special steel plates specially used for manufacturing pressure vessels, boilers, storage tanks, reactors and other pressure-bearing equipment. Featuring high strength, excellent toughness, good weldability, stable performance at high/low temperature, as well as superior fatigue and crack resistance, it can operate reliably under harsh working conditions such as high temperature, high pressure and corrosive media. It is an essential safety material widely applied in energy, chemical, nuclear power and other industries.
1. Execution Standards
Domestic Standards
GB/T 713-2023: Steel plates for boilers and pressure vessels (general grade for ambient & high temperature service)
GB/T 3531-2019: Low alloy steel plates for low-temperature pressure vessels
NB/T 47013.3: Ultrasonic testing for pressure vessel steel plates (Qualified Grade: Class Ⅰ / Class Ⅱ)
International Standards
American Standards: ASME SA-516 (ambient temperature), SA-387 (heat-resistant), SA-203 (low-temperature)
European Standards: EN 10028 (P265GH, P355GH)
2. Main Grades & Classification by Working Condition
2.1 Steel Plates for Normal Temperature Pressure Vessels (-20℃ ~ 350℃)
Q245R: Carbon steel with yield strength ≥ 245MPa. Applied to low-pressure storage tanks and boiler drums with cost-effective performance.
Q345R: Low alloy steel with yield strength ≥ 345MPa. It has optimal comprehensive properties and is the mainstream product for reactors, heat exchangers and LPG storage tanks.
Q370R / Q420R: High-strength grades with yield strength ≥ 370MPa / 420MPa. Suitable for medium and high-pressure equipment to reduce plate thickness and overall cost.
2.2 Steel Plates for Low-Temperature Pressure Vessels (-40℃ ~ -196℃)
16MnDR: Excellent low-temperature toughness at -40℃ (Impact energy ≥ 47J). Used for LNG storage tanks and low-temperature reactors.
09MnNiDR: Designed for ultra-low temperature down to -70℃, ideal for liquid ammonia and ethylene storage tanks.
9% Nickel Steel: Premium grade for -196℃ service, the core material for large LNG storage tanks with outstanding low-temperature toughness.
2.3 Heat-Resistant Steel Plates for High-Temperature Pressure Vessels (350℃ ~ 600℃)
15CrMoR / 14Cr1MoR: 15CrMoR for service temperature ≤ 550℃; 14Cr1MoR (equivalent to SA387 Gr11) for 350-480℃. Good creep resistance and resistance to high-temperature hydrogen corrosion.
12Cr1MoVR: Stable mechanical properties up to 580℃, widely used for utility boilers and high-temperature reactors.
2.4 Hydrogen & Corrosion Resistant Steel Plates
Q345R(HIC): Resistant to hydrogen-induced cracking, for service in wet hydrogen sulfide environments (oil refining and natural gas industry).
07MnCrMoVR: High strength and excellent crack resistance, applied to high-pressure hydrogenation reactors.
3. Typical Chemical Composition (wt%)
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|---|
| Q345R | ≤0.20 | 0.20-0.55 | 1.20-1.60 | ≤0.025 | ≤0.015 | — | — | — |
| 16MnDR | ≤0.20 | 0.15-0.50 | 1.20-1.60 | ≤0.020 | ≤0.010 | — | — | — |
| 15CrMoR | 0.12-0.18 | 0.15-0.40 | 0.40-0.70 | ≤0.025 | ≤0.015 | 0.80-1.10 | 0.45-0.60 | — |
4. Mechanical Properties
4.1 Normal Temperature Properties (Q345R for Reference)
Yield Strength (Rel): ≥ 345MPa (thickness ≤ 16mm), slightly decreased with increased plate thickness
Tensile Strength (Rm): 470-630MPa
Elongation (A): ≥ 21%
Impact Energy (Akv): ≥ 47J at -20℃ (V-notch)
4.2 Low-Temperature Toughness (16MnDR)
Impact energy ≥ 47J at -40℃; ≥ 47J at -30℃ for plates over 60mm thick, effectively preventing low-temperature brittle fracture.
4.3 High-Temperature Strength (15CrMoR)
Yield strength ≥ 240MPa at 500℃, featuring excellent anti-creep and anti-relaxation performance under long-term high-temperature operation.
5. Dimensions & Delivery Condition
5.1 Size Range
Thickness: 6-250mm (Common specification: 8-100mm)
Width: 1500-3000mm
Length: 6000-12000mm (Custom lengths available)
5.2 Delivery Heat Treatment
Hot rolled / Controlled rolling: For Q245R and Q345R, economical option.
Normalizing: For 16MnDR, 09MnNiDR, to refine grain and improve low-temperature toughness.
Normalizing & Tempering: For 15CrMoR, 12Cr1MoVR, to stabilize microstructure and optimize high-temperature performance.
Quenching & Tempering: For high-strength grades such as Q690DR, to balance high strength and toughness.
5.3 Quality Control
Ultrasonic Testing (UT): Minimum Class Ⅱ, Class Ⅰ required for critical equipment.
Surface Quality: Free from cracks, scabs and folds; dimensional tolerance complies with GB/T 709.
6. Main Applications
Petrochemical Industry: Reactors, heat exchangers, separators, desulfurization towers and LNG storage tanks.
Power & Energy Industry: Boiler drums, high-pressure heaters and nuclear pressure vessels.
Industrial Gas Industry: Storage tanks for oxygen, nitrogen, hydrogen and liquefied petroleum gas cylinders.
Coal Chemical Industry: Gasifiers, synthesis towers and coal-to-hydrogen equipment (hydrogen-resistant grades).
7. Product Advantages
High Safety: Strict control on chemical composition and non-destructive testing; outstanding fatigue and burst resistance for high-risk pressure-bearing service.
Wide Application Range: Covers working temperature from -196℃ to 600℃, including normal, low, high temperature and hydrogen-corrosion working conditions.
Excellent Weldability: Low carbon equivalent with low tendency to welding cracks, convenient for on-site fabrication.
Long Service Life: Stable microstructure and good corrosion resistance; designed service life over 20 years to reduce maintenance costs.
8. Selection Guidelines
Match with working conditions: Choose 16MnDR / 09MnNiDR for low temperature, 15CrMoR for high temperature, and Q345R(HIC) for hydrogen service.
Compliance with standards: Prioritize products complying with GB/T 713-2023, UT grade no lower than Class Ⅱ.
Performance verification: Check yield strength, low-temperature impact energy and dimensional tolerance.
Manufacturer & Documents: Select products from qualified major steel mills. Complete material certificates, UT reports and quality certificates shall be provided.
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