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Help CenterSteel Sheet & Plate & Pressure Vessel Steel Plate，ASTM A516 Gr60/70、ASTM A537 Cl1/Cl2、EN10028、DIN17175、ISO9328
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1. Product Overview
Pressure vessel steel plate is special medium & heavy plate dedicated for pressure equipment, suffix "R" stands for vessel grade. Manufactured via clean steel smelting, controlled rolling and dedicated normalizing/tempering heat treatment, with strictly limited sulfur & phosphorus impurities. It features stable yield strength, excellent impact toughness at high & low temperature, superior weldability and fatigue resistance, capable of long-term service under medium pressure and alternating hot-cold loads. Divided into normal temperature vessel plate, low-temperature vessel plate and high-temperature heat-resistant vessel plate, it acts as core raw material for storage tanks, heat exchangers, boiler drums, chemical reactors and oil & gas pressure equipment, complying with domestic special equipment inspection standards and overseas pressure vessel export specifications.
2. Applicable Standards
Domestic Chinese Standards
GB/T 713.1~713.4-2023 Steel Plates and Strips for Pressure Equipment (Core Standard)
GB/T 3531 Low Alloy Steel Plates for Low Temperature Pressure Vessels
GB 150 Design, Manufacturing & Acceptance Specification for Steel Pressure Vessels
GB/T 20801 Pressure Piping Code
International Export Standards
ASTM A516 Gr60/70, ASTM A537 Cl1/Cl2, EN10028, DIN17175, ISO9328
Supporting Certifications
Special equipment material certificate, SGS mechanical & low-temperature impact test report, CE pressure vessel certification, UT ultrasonic NDT report, original Mill Test Certificate (MTC)
3. Main Material Grades (Stainless Steel Excluded)
3.1 Normal Temperature Medium-Low Pressure Carbon Vessel Plate (General Storage Tanks, Low Pressure Boilers)
Q245R, equivalent to SA516 Gr60, suitable for 0~475℃ medium temperature working conditions
3.2 HSLA High Strength Vessel Plate (Chemical Storage Tanks, Boiler Drums, Heat Exchangers)
Q345R, Q370R, Q420R, most widely used general high strength vessel steel with excellent 0℃ impact toughness
3.3 Low Temperature Dedicated Vessel Plate (Liquid Nitrogen, LPG Storage Tanks)
16MnDR, 09MnNiDR, high impact energy at -40℃ to prevent low-temperature brittle fracture
3.4 High Temperature Cr-Mo Heat Resistant Vessel Plate (Hydrogenation Units, High Temperature Cracking Equipment)
15CrMoR, 14Cr1MoR, 12Cr2Mo1R, stable creep & oxidation resistance under long-term 550℃ service
3.5 Extra-Thick High Pressure Equipment Steel Plate
13MnNiMoR, 18MnMoNbR, dedicated for large thickness high pressure reactors and power station boiler drums
4. Delivery Heat Treatment Status
CR Controlled Hot Rolled: Standard delivery for thin gauge Q245R/Q345R, cost-effective for ordinary storage tanks
N Normalized: Mandatory for low-temperature plates & heavy plates, refined grain to greatly improve low-temperature impact toughness
N+T Normalized & Tempered: For Cr-Mo heat resistant plates & extra-thick high pressure plates, eliminate rolling stress for stable high temperature performance
Q+T Quenched & Tempered: For ultra-high strength high pressure equipment, balanced maximum strength and toughness
5. Complete Production Process
Molten steel refining for desulfurization & dephosphorization → Continuous casting slab → Slab high temperature homogenization heating → Four-high reversible mill controlled temperature rolling → Online controlled cooling → Normalizing / tempering / quenching & tempering in heat treatment furnace → Shot blasting to remove surface mill scale → 100% full plate ultrasonic NDT → Precision dimension inspection → Sampling physical & chemical impact test → Steel stamp marking → Edge cutting to flat finish → Anti-rust coating → Wooden pallet bundling & warehousing
6. Core Technical Parameters
6.1 Size Range
Thickness: 6mm ~ 280mm, customized thin wall storage plate & extra-thick high pressure reactor plate available
Width: 1500mm ~ 4000mm, mainstream sizes 1800/2000/2200/2500mm
Standard fixed length: 6000mm ~ 12000mm, custom cut special sizes on demand
Single plate weight: 3–28 MT, support CNC plasma & flame cutting processing
6.2 Reference Key Mechanical Properties
Q245R: Yield ≥245MPa, Tensile 370–500MPa, Elongation ≥22%, 0℃ impact energy ≥34J
Q345R: Yield ≥345MPa, Tensile 470–640MPa, Elongation ≥21%, 0℃ impact energy ≥34J
16MnDR Low Temperature Plate: Impact energy ≥47J at -40℃ to avoid low-temperature brittle fracture risk
15CrMoR Heat Resistant Plate: Max long-term service temperature ≤550℃, stable stress rupture strength at high temperature
6.3 NDT & Surface Requirements
100% UT ultrasonic inspection, grade Ⅱ qualified per GB/T2970, free of lamination, internal cracks and slag inclusion defects
Surface free of scar, heavy skin, bubble and deep scratches; mill scale fully removed after shot blasting for easy welding & painting
6.4 Welding Process Performance
Strictly controlled carbon equivalent, intact after 180° cold bending without cracking; compatible with SMAW, SAW, GTAW, no complex preheating required for head & cylinder forming
7. Core Product Advantages
Special clean steel for pressure equipment, fully compliant with safety codesStrictly limited S & P harmful impurities, full qualified tensile, impact and metallurgical tests; complete special equipment material documents for one-time domestic pressure vessel inspection approval.
Full temperature grade coverage to match diversified working conditionsComplete grade system including normal temperature carbon steel, low-temperature HSLA steel and high temperature Cr-Mo heat resistant steel, suitable for working conditions from cryogenic storage tanks to 600℃ high temperature hydrogenation equipment.
Uniform performance for heavy plates, no stress failure under high pressureControlled rolling & heat treatment refine grain structure with consistent mechanical properties across full plate thickness; no deformation or cracking for long-term service of high pressure tanks and large boiler drums.
Excellent cold forming & welding performanceSuitable for hot pressing heads, cylinder rolling and special-shaped bending; crack & pore free during welding to drastically reduce processing scrap rate for vessel manufacturers.
Complete export test documents for smooth overseas projectsSupply full SGS third-party physical & chemical reports, CE pressure vessel certificate and NDT records, smooth customs clearance for chemical equipment export to Middle East, Southeast Asia and Europe.
Sufficient spot stock & customized deep processing supportRegular stock of 6–100mm mainstream thickness, one-stop service including CNC cutting, bevel machining and shot blasting pretreatment.
8. Main Application Fields
8.1 Thermal Power Boiler Industry (Core High Temperature Application)
Power station boiler drum, water cooling header, waste heat boiler cylinder, steam buffer storage tank, heat exchanger tube sheet
8.2 Petrochemical Industry (Largest Consumption)
Synthetic ammonia reactor, hydrogenation unit cylinder, crude oil storage tank, LPG storage tank, heat exchanger, fractionating tower
8.3 Low Temperature Energy Equipment
Liquid nitrogen / liquid oxygen cryogenic storage tank, small LNG storage vessel, low temperature separation equipment, cold chain pressure vessel
8.4 Municipal Environmental Protection & Energy Storage Equipment
Tap water pressure storage tank, sewage treatment reactor, compressed air gas storage tank, energy storage high pressure buffer vessel
8.5 Oil & Gas Exploitation & Transportation Equipment
Oilfield high pressure buffer tank, oil-gas separator, thickened head for long-distance pipeline, wellhead pressure cylinder
8.6 Light Industry & Pharmaceutical Pressure Vessels
Food fermentation reactor, pharmaceutical high temperature sterilization vessel, small chemical pressure stirring tank
9. Packaging, Shipment & Lead Time
Packaging Methods
Regular medium & thin plates: Stacked together, supported by steel-wood pallets, cross & vertical steel strapping, iron corner guards to prevent collision damage
Extra-thick heavy plates: Single plate fixed on IPPC fumigated solid wooden pallets, temporary anti-rust oil coated on surface
Export dedicated: Whole pallet wrapped with waterproof anti-rust plastic film, fit for 40HC high cube container sea transportation
2. Delivery Warehouse: Spot goods shipped directly from Tianjin Port
3. Lead Time: 5–7 days for regular Q245R/Q345R stock goods; 12–20 days for customized orders of 16MnDR low temperature plate, Cr-Mo heat resistant plate and extra-thick plate over 100mm
4. Payment Term: 30% TT advance deposit, balance settled before shipment, L/C letter of credit is not accepted.
10. Mandatory Full Factory Inspection Items
Spectral chemical composition analysis of raw slab, strictly control harmful impurities S & P
100% UT ultrasonic NDT on every single plate to detect internal lamination & cracks
Sampling tensile, normal/low temperature V-notch impact, cold bending and hardness mechanical performance test
Full dimension inspection of thickness, width, length and flatness
Metallographic structure & decarburization depth analysis (mandatory for high temperature heat resistant plates)
Original special equipment Mill Test Certificate, factory certificate and third-party SGS authoritative test report provided
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