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Help CenterSteel Sheet & Plate & Boiler Plate，P235GH、P265GH、P355GH、A516Gr60、A516Gr70
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Boiler Plate is a high-quality hot‑rolled pressure‑bearing steel plate produced strictly in accordance with special pressure‑vessel standards. With extremely low impurities and dense & uniform internal structure, Boiler Plate features excellent high‑temperature compression resistance, stable weldability, good low‑temperature impact toughness and fatigue resistance, capable of long‑term service under high‑temperature, high‑pressure and alternating‑load working conditions. Boiler Plate serves as the core special steel for manufacturing industrial boilers, pressure vessels, heat exchange equipment and oil & gas storage tanks. Boiler Plate is mainly divided into Q245R Boiler Plate and Q355R Boiler Plate. Different grades of Boiler Plate adapt to low‑medium pressure and high‑pressure working conditions as well as various high‑temperature equipment structures. With complete grades & specifications and full original‑mill quality certificates available,Boiler Plate supports deep‑processing services such as ultrasonic testing, Z‑direction property, bevel cutting, sandblasting rust removal and fixed‑length cutting. Q245R Boiler Plate delivers excellent plasticity, stable weldability and high cost‑performance, being the most widely circulated Boiler Plate in the market, extensively used for medium & low‑pressure boiler cylinders, ordinary pressure vessels and heat exchange tanks. With higher strength and stronger pressure‑bearing capacity,Q355R Boiler Plate is suitable for heavy‑duty conditions such as high‑pressure boilers, large‑scale energy storage tanks and chemical high‑pressure reaction equipment. Conventional thickness of Boiler Plate ranges 6‑100mm, width 1500‑3000mm, length 6000‑12000mm. Main grades include domestic Q245R Boiler Plate, Q355R Boiler Plate and foreign‑trade grades P265GH, A516Gr60/70. Optional Z15/Z25/Z35 lamellar‑tearing‑resistant property is available. Delivery states include normalized rolling and controlled hot rolling. Every plate passes full inspection of tensile property, impact property, flaw detection and dimensional tolerance. Boiler Plate complies with GB/T713‑2023 national standard as well as EN10028, ASTM A516 foreign‑trade standards. Boiler equipment factories and pressure‑vessel manufacturers can select Q245R Boiler Plate and Q355R Boiler Plate according to equipment pressure grade, working temperature and load condition, giving full play to advantages of high temperature resistance, high pressure resistance, stable weldability and high safety factor of Boiler Plate and ensuring safe and stable operation of various special pressure‑bearing equipment.
1. Material Grade & Model
Domestic Mainstream Boiler Plate Grades: Q245R Boiler Plate, Q355R Boiler PlateForeign‑Trade Common Boiler Plate Grades: P235GH, P265GH, P355GH, A516Gr60, A516Gr70
Optional Z‑Direction Property: Z15, Z25, Z35 for key thick‑plate high‑pressure welding parts;
Q245R Boiler Plate: Thickness 6‑80mm, width 1500‑3000mm, excellent plasticity & convenient weldability, suitable for medium & low‑pressure boilers, ordinary pressure vessels and heat exchange equipment;
Q355R Boiler Plate: Thickness 8‑100mm, width 1500‑3000mm, high strength & high pressure resistance, suitable for high‑pressure boilers, large pressure storage tanks and chemical high‑pressure equipment; All grades comply with GB/T713‑2023 national standard and meet EN10028, ASTM A516 international standards. Custom UT ultrasonic test Grade Ⅰ/Ⅱ/Ⅲ is supported, and full‑set original‑mill material reports, mechanical property and flaw‑detection certificates can be provided.
2. Product Grades and Classification
- Q245R Boiler Plate: General pressure‑bearing grade with stable yield strength and low carbon equivalent, no preheating required for welding, suitable for normal‑temperature, medium & low‑pressure conventional equipment;
- Q355R Boiler Plate: High‑strength pressure‑bearing grade with higher mechanical strength, outstanding impact & fatigue resistance, suitable for high‑pressure, high‑temperature and heavy‑duty special equipment;
- European Standard Boiler Plate: P235GH, P265GH, P355GH, for EU‑standard boiler and pressure‑vessel foreign‑trade projects;
- American Standard Boiler Plate: A516Gr60, A516Gr70, for petrochemical and energy high‑temperature pressure‑bearing equipment;
- Z‑direction Boiler Plate: Z15/Z25/Z35, effectively avoiding lamellar tearing risks in thick‑plate multi‑layer welding to ensure high‑pressure welding safety;
- Compliance Standards: GB national standard, EN European standard, ASTM American standard, suitable for domestic special‑equipment manufacturing and import‑export foreign‑trade orders.
3. Execution Standards
- GB/T 713‑2023 Steel plates for boilers and pressure vessels
- GB/T 709 Dimensions, shape, weight and tolerances of hot‑rolled steel plates and strips
- GB/T 5313 Steel plates with through‑thickness properties
- EN 10028 Flat steel products for pressure purposes
- ASTM A516 Standard specification for carbon steel plates for moderate and high‑temperature service
- Original mill certificates, mechanical‑impact reports and ultrasonic‑test reports are available, supporting SGS/BV third‑party authoritative inspection & acceptance, meeting special‑equipment production qualification requirements.
4. Core Specifications and Parameters
Boiler Plate‑Q245R Boiler Plate: Thickness 6‑80mm; Width 1500‑3000mm; Length 6000‑12000mm; Normalized / hot‑rolled delivery; for medium & low‑pressure industrial boilers, ordinary pressure vessels, heat exchangers and water & gas storage tanks;Boiler Plate‑Q355R Boiler Plate: Thickness 8‑100mm; Width 1500‑3000mm; Length 6000‑12000mm; Normalized delivery; for high‑pressure boilers, large energy storage tanks, chemical reaction kettles and heavy‑duty pressure‑bearing equipment; Full‑series Boiler Plate supports fixed‑length cutting, bevel machining, sandblasting rust removal, surface grinding, UT ultrasonic test and heat‑treatment deep‑processing.Q245R Boiler Plate has sufficient spot stock and excellent processing performance, being the most widely used Boiler Plate in the special‑equipment manufacturing industry;Q355R Boiler Plate delivers outstanding pressure‑bearing performance and structural stability, meeting strict production requirements of high‑temperature & high‑pressure working conditions.
5. Classification & Performance Characteristics
- Q245R Boiler Plate: Pure material with extremely low impurities, excellent plasticity, toughness and weldability, no easy welding crack generation, stable cold & hot processing performance, no deformation under long‑term pressure, suitable for most conventional pressure‑bearing equipment;
- Q355R Boiler Plate: Optimized alloy ratio on the basis of low carbon purity, greatly improved yield & tensile strength, stable high‑temperature mechanical properties, outstanding alternating‑load and fatigue resistance, suitable for continuous‑operation high‑temperature & high‑pressure equipment;
- Z‑direction Boiler Plate: Excellent through‑thickness tearing resistance, specially used for thick‑plate cross joints and full‑penetration high‑pressure welding structures to eliminate lamellar tearing hazards;
- Delivery State: hot‑rolled, controlled rolling, normalized; customized processing including flaw detection, sandblasting, beveling and precision cutting is available on demand;
- Both Q245R Boiler Plate and Q355R Boiler Plate support customized production of thickness, width, flaw‑detection grade and Z‑direction performance according to equipment drawings, meeting non‑standard production requirements of various special equipment.
6. Main Applications
Boiler Plate is a core special steel for special‑equipment manufacturing, extensively applied for industrial steam boilers, hot water boilers, boiler cylinders, heads, tube plates, as well as petrochemical pressure vessels, heat exchange equipment, reaction kettles, gas storage tanks, oil storage tanks, environmental protection pressure equipment and energy storage tanks. Q245R Boiler Plate is mostly used for conventional medium & low‑pressure equipment, serving as the preferred Boiler Plate for civil and general industrial pressure equipment due to excellent processing performance and high cost‑performance. Q355R Boiler Plate is widely used for industrial special equipment under high‑pressure, high‑temperature and heavy‑duty conditions, adapting to pressure‑bearing structures of large‑scale chemical, electric power and energy projects. Boiler and pressure‑vessel manufacturers can select products accurately according to equipment design pressure, working temperature and structural thickness. Relying on complete specifications, full certificates, qualified flaw detection and stable mass‑supply capacity of Boiler Plate, the compliance and operational safety of special‑equipment production can be guaranteed.
7. Packing, MOQ & Lead Time
- Packing: Boiler Plate separated by wood padding between layers, firmly fixed with high‑strength steel strips, complete plate surface protection with clear & standard marking, moisture‑proof, rust‑proof and collision‑resistant, suitable for long‑distance land and sea export transportation;
- MOQ: 5 tons minimum order quantity, mixed ordering of Q245R Boiler Plate and Q355R Boiler Plate supported, small‑batch sample orders and large‑scale special‑equipment project bulk procurement acceptable;
- Lead Time: 7‑12 days for regular in‑stock specifications; 12‑20 days for customized special thickness, Z‑direction performance and high‑grade flaw‑detection orders. Full‑set material certificates, flaw‑detection reports and mechanical reports are supplied together with goods, supporting third‑party inspection and applicable to FOB, CIF, DAP and other foreign‑trade terms.
8. Product Advantages
Boiler Plate features strict sulfur & phosphorus control, pure and dense material, stable high‑temperature mechanical properties, no deformation or cracking under long‑term pressure, complying with special‑equipment safety standards;
2. Q245R Boiler Plate delivers excellent weldability, convenient processing and high cost‑performance, satisfying mass production requirements of most medium & low‑pressure pressure‑bearing equipment;
3. Q355R Boiler Plate owns high strength, high toughness and fatigue resistance, capable of withstanding high‑temperature & high‑pressure alternating loads and adapting to strict industrial working conditions;
4. Every piece of Boiler Plate passes plate‑by‑plate flaw detection with traceable performance and complete qualification certificates, meeting special‑equipment inspection, acceptance and certification requirements, suitable for domestic projects and foreign‑trade export orders.
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