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Help CenterSteel Sheet & Plate & Pressure Vessel Steel Plate，ASTM A516、ASTM A387、EN 10028、ASME SA
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1. Product Definition
Pressure Vessel Steel Plate (PV Plate), marked with suffix "R" for pressure vessel grade, is a special steel plate exclusively manufactured for boilers, pressure vessels, spherical tanks, heat exchangers, hydrogenation reactors, cryogenic storage tanks and other pressure-bearing special equipment. Strict control of sulfur and phosphorus impurities during smelting; mandatory low-temperature impact test, high-temperature tensile test and 100% ultrasonic non-destructive testing. It integrates high pressure resistance, wide temperature toughness, excellent weldability, hydrogen induced cracking resistance and sulfide corrosion resistance, serving as core safety material for special pressure equipment.
Domestic Standard: GB/T 713.1~713.3-2023 Steel Plates and Strips for Pressure EquipmentInternational Trade Standards: ASTM A516, ASTM A387, EN 10028, ASME SA Series
2. Main Grades & Service Conditions
2.1 Carbon PV Plate (Ambient & Medium-Low Pressure)
Q245RMinimum yield strength ≥245MPa, service temperature -20℃ ~ 475℃, delivered hot rolled or normalized. Low impurity content, outstanding weldability and cost-effective.Application: Standard steam boilers, normal-temperature water storage tanks, low-pressure buffer tanks, small heat exchangers.
2.2 Low Alloy High Strength PV Plate (Most Widely Used)
Q345R (Mainstream Grade)Yield strength ≥345MPa, qualified for -20℃ impact test, thickness range 6–200mm; HIC resistant grade Q345R(HIC) available.Application: Petrochemical storage tanks, boiler drums, shell & tube heat exchangers, spherical tanks, oil & gas separators, medium-pressure reactors.
13MnNiMoRExtra heavy high strength plate, thickness 8–300mm, reliable low-temperature toughness & H2S corrosion resistance, stable long-term service up to 500℃.Application: Large spherical tanks, coal-to-oil hydrogenation reactors, power station high-pressure drums, heavy pressure shells.
Q460R / Q460DR460MPa high strength grade; Q460DR suitable for cryogenic service down to -40℃, realize lightweight thin-wall design.Application: CO2 storage tanks, propane cryogenic refrigeration equipment, large chemical pressure cylinders.
2.3 Cr-Mo Heat Resistant PV Plate (High Temp & High Pressure Hydrogenation Units)
15CrMoRCr-Mo heat-resistant alloy steel, maximum long-term service temperature 550℃, excellent anti-creep and anti-oxidation performance at high temperature.Application: Refinery heating furnaces, high-temperature cracking heat exchangers, medium-high temperature reactors.
14Cr1MoR / 12Cr2Mo1RSpecialized for hydrogenation facilities, anti-hydrogen embrittlement & high-temperature sulfidation corrosion, stable operation at 580℃.Application: Coal-to-oil hydrocracking units, reforming reactors, high-pressure hydrogenation autoclaves.
2.4 Low-Temperature Cryogenic PV Plate
09MnNiDR / 15MnNiDRNickel alloy tempered steel, maintains high impact toughness at -40℃ ~ -70℃ to avoid brittle fracture under ultra-low temperature.Application: LNG storage tanks, liquid oxygen & liquid nitrogen tanks, low-temperature gas separation equipment.
International Equivalent Grades
ASTM: SA516 Gr60/65/70 (carbon steel for ambient temp), A387 Gr11/Gr22 (Cr-Mo heat resistant), A203 (low-temperature nickel steel)EN: P265GH, P355GH, P460NL1
3. Heat Treatment Delivery Status
Hot Rolled / Controlled Rolling (TMCP): Standard for thin plate ≤16mm, uniform grain structure, lower cost; Q345R plates over 36mm thickness require mandatory normalizing.
Normalizing: Standard process for medium & heavy plates, refine grain and greatly improve low-temperature impact toughness.
Normalizing + Tempering: For heavy plates, Cr-Mo heat resistant plates and cryogenic plates, release internal rolling stress and enhance high-temperature creep resistance.
Quenching + Tempering: For ultra-high strength heavy plates and anti-corrosion equipment with hydrogen & H2S medium.
4. Full Specification Parameters
Thickness: 6mm–300mm, regular stock range 8–120mm
Width: 1500/1800/2000/2200/2500–4500mm, customized sizes acceptable
Length: 6000–12000mm, cut-to-length per customer drawings
Surface: Hot rolled black finish, shot blasting & sandblasting surface treatment available
Special customized properties: Z-direction anti-lamination (Z15/Z25/Z35), HIC hydrogen induced cracking resistance, SSCC sulfide stress corrosion resistance
Ultrasonic Test Grade: Comply with NB/T47013 standard, standard Grade II; Grade I mandatory for high-pressure flammable & explosive equipment
5. Standard Mechanical Properties (Medium Thickness)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation | Impact Test Temp | Min Impact Energy |
|---|---|---|---|---|---|
| Q245R | ≥245 | 370–520 | ≥25% | 0℃ | 27J |
| Q345R | ≥345 | 510–640 | ≥21% | -20℃ | 34J |
| 15CrMoR | ≥295 | 440–590 | ≥22% | 20℃ | 34J |
| 09MnNiDR | ≥270 | 440–570 | ≥23% | -70℃ | 34J |
6. Core Product Advantages
Strict chemical composition control: Much lower S & P content than ordinary structural steel, effectively reduce welding crack and low-temperature brittle fracture risks
Stable toughness across full temperature range: Mandatory impact test at normal, low and high temperature to eliminate explosion hazard of pressure equipment
Excellent forming & weldability: Low carbon equivalent, no cracking during cold bending, hot rolling and welding with wide welding process window
Superior high-temperature creep resistance: Cr-Mo alloy keeps stable dimension under long-term high temperature & pressure without permanent deformation
Optional anti-corrosion grades: HIC resistant plates for medium containing hydrogen and hydrogen sulfide
Full inspection before delivery: 100% ultrasonic test for all plates, no lamination, inclusion or internal crack defects
Multi-standard compliance: Meet domestic special equipment inspection, ASME and EU pressure vessel codes, complete certification documents provided
7. Main Application Fields
Petrochemical IndustryAtmospheric oil & gas storage tanks, spherical tanks, hydrogenation reactors, cracking furnaces, shell & tube heat exchangers, oil & gas separators, complete desulfurization & decarbonization equipment
Power & Boiler IndustryPower station steam drums, waste heat boilers, high-temperature headers, steam heat exchange pipelines, energy storage pressure tanks
Cryogenic Energy IndustryLNG storage tanks, liquid oxygen/nitrogen cryogenic vessels, CO2 cryogenic tanks, propane refrigeration equipment
Coal Chemical IndustryCoal-to-hydrogen & coal-to-oil high-pressure reactors, full sets of hydrogen-resistant chemical equipment
General Industrial Pressure EquipmentAir buffer tanks, domestic water pressure vessels, printing & dyeing reactors, pharmaceutical pressure vessels, heat exchanger shells
8. Export Packing, Lead Time & Delivery Documents
Packing: Plates stacked on wooden supports, fixed with steel strapping; heat number, grade, thickness and UT grade marked on surface; waterproof anti-rust film covered for sea transportation.
Lead TimeStandard in-stock plates: 3–5 working daysCustom normalized/tempered, HIC resistant, Z-direction performance special plates: 7–12 working days
Complete Delivery DocumentsMaterial Test Certificate (MTC), Spectral Chemical Composition Report, Mechanical & Impact Test Report, Ultrasonic Test Report, Factory Inspection Certificate, Special Equipment Compliance Document
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