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Help CenterSteel Sheet & Plate & Pressure Vessel Plate，Q245R、Q345R、Q370R、16MnDR、09MnNiDR、15CrMoR、12Cr1MoVR、13MnNiMoR
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1. Product Definition
Pressure Vessel Plate, also known as pressure vessel steel plate or boiler vessel plate, is a special medium and thick steel plate dedicated to the manufacturing of boilers, pressure vessels, pressure storage tanks and heat exchange equipment. Manufactured in strict accordance with special production standards for pressure-bearing equipment, it features high strength, high toughness, excellent weldability, fatigue resistance, impact resistance, and high temperature and high pressure resistance. Capable of stable long-term operation under complex and harsh pressure-bearing working conditions, it serves as a core safety steel material for chemical, energy, electric power, boiler manufacturing and new energy equipment industries. Our factory mainly supplies National Standard Pressure Vessel Plate, Low-temperature Pressure Vessel Plate and High-temperature and High-pressure Pressure Vessel Plate with complete material grades, high flaw detection grades and stable performance, fully meeting the acceptance standards of various special equipment.
2. Core Product Advantages
Stable Mechanical Properties and High Safety Factor: Processed through refined controlled rolling and heat treatment, Pressure Vessel Plate has a dense and uniform internal structure with stable indicators of yield strength, tensile strength and elongation. It boasts strong impact and deformation resistance, which effectively resists high-pressure impact, equipment vibration and alternating pressure loads, eliminates hidden dangers of cracking and bursting of pressure-bearing equipment, and ensures extremely high operational safety.
Excellent Weldability and Easy Forming: The special vessel steel features low carbon equivalent and low impurity content with superior plasticity and toughness. It is compatible with various welding processes such as submerged arc welding, TIG welding and MIG welding without brittle fracture or cold cracks during welding. Meanwhile, it supports deep processing including rolling, head pressing, bending, cutting and punching with good forming effect, suitable for special-shaped production of various pressure vessels.
Wide Adaptability to Temperature and Pressure Conditions: Conventional National Standard Pressure Vessel Plate adapts to normal temperature and medium-low pressure working conditions; High-temperature and High-pressure Pressure Vessel Plate has excellent creep resistance and high-temperature relaxation resistance for long-term service in high-temperature and high-pressure environments; Low-temperature Pressure Vessel Plate delivers outstanding low-temperature impact toughness without brittle fracture at ultra-low temperatures, covering all working conditions of low, normal and high temperatures.
Superior Corrosion and Fatigue Resistance: Special-grade pressure vessel plates can resist slight corrosion from acid-base media, flue gas and hydrogen sulfide, and possess excellent hydrogen-induced cracking resistance. They are not prone to fatigue aging under long-term cyclic pressure bearing, greatly extending the service life of pressure vessels and boiler equipment.
Strict Quality Inspection and Traceable Quality: All Pressure Vessel Plates undergo mechanical property tests, impact tests, non-destructive flaw detection and composition tests before delivery, supporting Grade Ⅰ/Ⅱ/Ⅲ flaw detection. Official quality certificates are provided for each batch with traceable quality, enabling smooth passing of special equipment inspection and acceptance.
3. Common Material Grades and Applicable Working Conditions
Normal Temperature Carbon Pressure Vessel Plate: Q245R, Q345R, Q370R. As the mainstream National Standard Pressure Vessel Plate in the market, Q245R and Q345R have good toughness and weldability, widely used in ordinary storage tanks, heat exchangers, low-pressure boilers and water treatment pressure equipment. Q370R, a high-strength grade, is suitable for high-pressure thick-walled vessels, large storage tanks and heavy-duty pressure-bearing equipment.
Low-temperature Pressure Vessel Plate: 16MnDR, 09MnNiDR. Professional Low-temperature Pressure Vessel Plates adapted to ultra-low temperature conditions of -40℃ and -70℃ respectively. With excellent low-temperature impact toughness and no risk of low-temperature brittle fracture, they are widely applied in LNG storage tanks, liquid ammonia storage tanks, low-temperature heat exchange equipment, ethylene cold boxes and low-temperature pressure vessels.
High-temperature and High-pressure Pressure Vessel Plate: 15CrMoR, 12Cr1MoVR, 13MnNiMoR. High-end High-temperature and High-pressure Pressure Vessel Plates with excellent heat resistance, creep resistance and high-temperature oxidation resistance. They can withstand long-term service above 500℃ and high-pressure environments, ideal for power station boiler drums, steam reactors, petrochemical high-temperature cracking equipment and high-pressure heat exchange devices.
International Standard Pressure Vessel Plate: American standards: SA516Gr60, SA516Gr70, SA285GrC, SA387Gr22; European standards: P265GH, P355GH, P355NL. Featuring stable material performance and precise tolerance, they are suitable for foreign trade export, foreign-funded equipment and international engineering projects.
4. Specification Parameters
Thickness Range: 4mm–200mm, with customized extra-thick plates up to 300mm. Thin plates are suitable for head processing, while thick plates apply to high-pressure heavy-duty vessels.
Width Range: 1500mm–3900mm ultra-wide plates with flat surface, no warpage and no delamination, adapting to full-plate blanking for large-scale equipment.
Length Range: 6000mm–12000mm, supporting fixed-length flattening, free cutting, special-shaped cutting and head-specific fixed-size processing.
Delivery Status: Hot rolled, normalized, normalized + tempered, quenched + tempered. Custom heat treatment processes are available according to material grades and working conditions.
Flaw Detection Grade: Support national standard and American standard non-destructive flaw detection, providing Grade Ⅰ, Ⅱ and Ⅲ inspection reports to meet high-standard acceptance requirements of special equipment.
5. Production Process
High-purity steel billet feeding → High-temperature heating and refining → Precision temperature-controlled rolling → Heat treatment conditioning (normalizing/tempering/quenching & tempering) → Precision straightening → Layered non-destructive flaw detection → Surface grinding and cleaning → Fixed-length cutting → Dimensional re-inspection and sorting → Inkjet marking → Anti-rust protection treatment → Packaging and warehousing. The rigorous full-process production ensures that every National Standard Pressure Vessel Plate, Low-temperature Pressure Vessel Plate and High-temperature and High-pressure Pressure Vessel Plate has uniform material, consistent performance, no internal defects and complies with special equipment application standards.
6. Execution Standards
GB/T 713 Carbon and Alloy Steel Plates for Pressure Equipment (Core National Standard for Pressure Vessel Plates)
GB/T 3531 Low Alloy Steel Plates for Low-temperature Pressure Vessels
ASTM A516, ASTM A387 American Standards for Pressure Vessel Steel Plates
EN 10028 General European Standard for Pressure Equipment Steel Plates
7. Main Applications
Boiler and Power Industry: Power station boiler drums, headers, superheaters, pressure vessel shells and power station pressure-bearing supporting equipment, mainly adopting High-temperature and High-pressure Pressure Vessel Plate for high temperature resistance, high pressure resistance and stable operation.
Petrochemical Industry: Petrochemical reactors, tower vessels, heat exchangers, oil storage tanks, chemical pressure storage tanks and high-pressure reaction equipment. National Standard Pressure Vessel Plates are applicable to most medium and low-pressure chemical working conditions.
Low-temperature Energy Storage Industry: LNG low-temperature storage tanks, liquid oxygen and liquid nitrogen storage tanks, low-temperature heat exchange equipment and cold chain pressure-bearing devices. Special Low-temperature Pressure Vessel Plates eliminate the risk of low-temperature brittle fracture.
Coal Chemical and Hydrogen Energy Equipment: High-pressure hydrogen storage tanks, coal gasifiers, hydrogenation reaction equipment and high-pressure conveying vessels, relying on the high strength, fatigue resistance and hydrogen-induced cracking resistance of pressure vessel plates.
General Special Equipment: Widely used in various industrial pressure-bearing scenarios such as air storage tanks, buffer tanks, water treatment pressure vessels, heat exchange equipment and boiler auxiliary accessories.
8. Delivery Cycle
Conventional In-stock Pressure Vessel Plates: Mainstream specification Q245R and Q345R National Standard Pressure Vessel Plates are sufficiently stocked and can be delivered within 3–5 working days after payment confirmation.
Conventional Cutting & Processing Orders: The processing cycle for plates requiring fixed-length flattening, free cutting, special-shaped cutting and precision punching is 5–7 working days.
Special Low/High Temperature Pressure Vessel Plate Orders: Production lead time for 16MnDR, 09MnNiDR low-temperature plates and 15CrMoR high-temperature heat-resistant High-temperature and High-pressure Pressure Vessel Plates is 7–12 working days.
Extra-thick/Super-large Specification/Foreign Trade Custom Orders: Custom orders for extra-thick plates above 200mm, ultra-wide and ultra-long plates, and American/European standard plates will be delivered within 10–20 working days according to process difficulty and production schedule.
Urgent Orders: In-stock products can be delivered on the same day, and processing & custom orders can be prioritized for production to shorten the cycle and meet urgent engineering needs.
9. Quality Inspection
All factory Pressure Vessel Plates, National Standard Pressure Vessel Plates, Low-temperature Pressure Vessel Plates andHigh-temperature and High-pressure Pressure Vessel Plates undergo a complete set of rigorous factory inspections, including chemical composition analysis, normal/low-temperature impact tests, tensile & bending mechanical tests, ultrasonic non-destructive flaw detection, surface defect screening and dimensional accuracy verification. Products with delamination, inclusion, cracks and unqualified performance are strictly prohibited from delivery. Complete quality inspection reports and material certificates are provided for each batch with full quality traceability, fully meeting the standards for special equipment acceptance, project filing and third-party testing.
10. Packaging Method
Conventional Industrial Packaging: The plate surface is covered with protective film with reinforced corner protection, wrapped with anti-rust and waterproof moisture-proof layers, and fixed with multiple steel belt bindings to prevent collision, surface scratches and moisture rust during transportation, ensuring intact delivery of finished products.
High-end Export Packaging: Foreign trade standardPressure Vessel Plates are packed with solid wooden pallets, moisture-proof and shockproof encapsulation and full corner protection, suitable for long-distance ocean transportation without deformation or rust, complying with foreign trade export inspection standards.
11. Storage and Usage Precautions
Pressure Vessel Plates shall be stored in dry, ventilated and dust-free indoor warehouses. Long-term outdoor stacking, rainwater accumulation, dampness and sun exposure are strictly prohibited to avoid surface oxidation rusting and mechanical performance degradation caused by material moisture. Plates shall be stacked by category of material, specification and thickness with elevation from the ground, kept away from acid-base and corrosive gases and materials, and the stacking height shall be controlled to prevent extrusion deformation and surface wear. Avoid hard object impact and surface scratches during processing. Thick plate welding shall strictly follow standardized preheating and temperature control procedures to prevent welding cracks. Low-temperature Pressure Vessel Plates are forbidden to be used beyond rated temperature conditions, and High-temperature and High-pressure Pressure Vessel Plates shall not operate under long-term over-pressure and over-temperature conditions. Strictly match equipment design parameters to ensure operational safety and service life of equipment.
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