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Help CenterSteel Sheet & Plate & Boiler Plate，EN 10028、ASTM A516、JIS G3115
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1. Product Overview
Boiler Plate is a special hot-rolled steel plate manufactured in strict accordance with dedicated pressure vessel standards. Designed for high-temperature, high-pressure and alternating load working conditions, Boiler Plate features excellent high-temperature stability, pressure resistance, low-temperature impact toughness and superior weldability. It serves as the core pressure-bearing material for industrial boilers, pressure vessels and thermal equipment. Our factory mainly supplies two major series: Ordinary Boiler Plate and High Strength Boiler Plate. Various grades of Boiler Plate can meet diverse pressure-bearing manufacturing requirements for medium and low-pressure industrial boilers, high-pressure power station boilers, chemical pressure vessels and heat exchange equipment. Adopting clean steel smelting, precise controlled rolling and cooling, and normalizing heat treatment technology, Boiler Plate has dense and uniform internal structure with low impurity content and outstanding pressure and fatigue resistance. It supports full-grade ultrasonic flaw detection and high-temperature mechanical property testing. Widely applied in power stations, petrochemical industry, thermal heating, pharmaceutical and light industry, and new energy equipment, Boiler Plate is an indispensable special safety steel material for the manufacturing of special pressure-bearing equipment.
2. Product Classification
According to material strength, applicable pressure grade and working temperature, Boiler Plate is mainly divided into two core categories, fully covering the manufacturing scenarios of high and low pressure, high and low temperature pressure-bearing equipment:
1. Ordinary Boiler Plate: Centered on Q245R grade, Ordinary Boiler Plate features reasonable carbon-manganese ratio, excellent weldability, good plastic formability and cost performance, and can stably withstand working temperatures below 450℃ for a long time. With stable performance and low brittle fracture risk,Ordinary Boiler Plate is mostly used for medium and low-pressure boiler drums, headers, steam pipelines, ordinary gas storage tanks and heat exchanger shells. It is the mainstream material for small and medium-sized thermal equipment manufacturing and a regular core plate for boiler accessory factories.
2. High Strength Boiler Plate: Represented by Q355R, High Strength Boiler Plate adopts alloy grain refinement technology to improve yield strength and pressure bearing limit. Its high temperature resistance, impact resistance and fatigue resistance are far superior to ordinary Boiler Plate, enabling it to adapt to harsh working conditions of high pressure, high temperature and alternating loads. High Strength Boiler Plate is mainly applied to key stress-bearing parts such as large power station boilers, high-pressure chemical vessels, hydrogenation reactors and thick-wall pressure-bearing equipment, serving as the preferred material for large heavy-duty pressure-bearing projects.
3. Special-purpose Boiler Plate: Including flaw-detected grade Boiler Plate, normalized high-temperature resistant Boiler Plate and low-temperature hydrogen embrittlement resistant boiler plate. Customization conforming to national, American and European standards is available, adapting to special pressure-bearing scenarios such as thick plate welding, low-temperature working conditions and strong corrosive media.
3. Implementation Standards & Material Grades
All Boiler Plate products are produced in strict compliance with special equipment steel specifications with accurate and controllable composition and qualified mechanical properties. We can provide complete material certificates, flaw detection reports and special equipment qualification documents, fully meeting the acceptance standards of domestic special equipment and export order requirements:
Implementation Standards: GB 713-2014 (core national standard for boiler and pressure vessel plates), GB/T 709; Foreign Trade Standards: EN 10028, ASTM A516, JIS G3115
Ordinary Boiler Plate Grades: Q245R, suitable for conventional medium and low-pressure boilers, ordinary pressure vessels, heat exchange equipment and steam pipeline pressure-bearing components
High Strength Boiler Plate Grades: Q355R, Q370R, American standard A516 Gr60/Gr70, European standard P265GH, P355GH, suitable for high-pressure, high-temperature, large-scale power station and chemical pressure-bearing equipment
All high-end Boiler Plate supplied by our factory adopts normalizing heat treatment technology, which effectively eliminates rolling internal stress, uniformizes plate toughness and greatly improves pressure resistance stability. It thoroughly avoids hidden dangers of high-temperature deformation and welding cracking of ordinary plates, ensuring long-term safe operation of pressure-bearing equipment.
4. Specification Parameters
4.1 Thickness Range
Conventional thickness: 6mm-150mm. Custom ultra-thin and ultra-thick special-specification Boiler Plate is available. Thin plates are suitable for head and inner lining processing, while medium and thick plates apply to high-pressure cylinders and main load-bearing pressure-bearing structures.
4.2 Width Range
Conventional width: 1500mm-4200mm with dimensional tolerance strictly following Class B/C high-precision deviation standards. Large-size whole plates reduce equipment splicing welds and improve pressure-bearing tightness.
4.3 Length Range
Conventional length: 3000mm-18000mm. Custom fixed and multiple non-standard lengths are supported to reduce secondary cutting loss and meet the blanking size requirements of various pressure-bearing equipment.
4.4 Surface & Delivery Condition
Delivered in hot-rolled black surface with flat plate surface free of bubbles, interlayers and cracks. Normalizing and controlled rolling delivery states are optional, supporting Grade 1/2/3 UT ultrasonic flaw detection and high-temperature performance testing. Anti-rust oil coating is available on demand, suitable for cutting, rolling, welding and groove finishing processing.
5. Core Product Advantages
1. Stable High-temperature and High-pressure Resistance: Developed exclusively for thermal pressure-bearing working conditions, Boiler Plate maintains stable mechanical properties without attenuation under high temperature. It can withstand long-term alternating high-temperature and high-pressure loads without deformation, bulging or failure, ensuring the operational safety of boilers and pressure vessels.
2. Excellent Weldability and Formability: Ordinary Boiler Plate and High Strength Boiler Plate feature low carbon equivalent and pure material with stable performance in welding heat-affected zones, free of welding cracks and pores. Meanwhile, they deliver superior bending, rolling and stamping formability, adapting to special-shaped processing of heads and cylinders.
3. Superior Fatigue and Brittle Fracture Resistance: High-quality Boiler Plate has refined grains and dense structure with excellent low-temperature impact toughness. It can resist alternating stress caused by equipment start and stop, avoiding long-term fatigue damage and adapting to continuously operating industrial pressure-bearing equipment.
4. Qualified Flaw Detection and Ultra-high Safety: Boiler Plate is free of internal defects such as interlayers, looseness and impurities with a high pass rate of full-grade flaw detection, fully complying with special equipment safety inspection standards and applicable to core parts of various pressure-bearing special equipment.
5. Complete Specifications and Strong Customization: Covering full-range thickness, length and width specifications, it supports customization of heat treatment, flaw detection and special materials, matching the drawing parameters of various boilers and pressure vessels to meet the customized demands of high and low-pressure equipment of all sizes.
6. Complete Qualifications and Stable Supply: All Boiler Plate holds special equipment material qualifications with sufficient spot inventory and mass delivery capacity. Special-specification plates can be scheduled for rapid production to adapt to the construction progress of engineering projects.
6. Main Application Scenarios
1. Industrial Boiler Manufacturing Industry: Boiler Plate is widely used for industrial boiler drums, water walls, economizers, headers and furnace pressure-bearing shells; Ordinary Boiler Plate is mostly applied to civil heating and small and medium-sized industrial boiler equipment.
2. Power Station Thermal Engineering: High Strength Boiler Plate is used for pressure-bearing components of high-pressure boilers and thermal power generating units in large-scale power stations, resisting long-term high-temperature and high-pressure working conditions to ensure stable operation of power station equipment.
3. Petrochemical Industry: Boiler Plate is applied to chemical reactors, gas storage tanks, buffer tanks, heat exchange vessels and coal gasifiers. It features excellent hydrogen embrittlement resistance and medium corrosion resistance, adapting to harsh chemical working conditions.
4. New Energy and Light Industry Equipment: Used for energy storage pressure-bearing equipment, thermal heat exchange units, pharmaceutical sterilization equipment and food processing pressure vessels with safe and stable materials, suitable for clean production working conditions.
5. Pipeline and Thermal Supporting Engineering: Boiler Plate is rolled into high-pressure steam pipelines and steam separators as pipeline pressure-bearing accessories, widely used in urban thermal heating and industrial steam transmission systems.
6. Special Equipment Supporting: Various high and low-pressure pressure vessels, vacuum equipment, compressed air storage tanks and heat exchanger shells are all processed and formed with Boiler Plate, which is the core material for special equipment.
7. Processing Methods
1. Flame / Plasma Cutting Processing: Boiler Plate can be precisely cut and blanked according to drawings to manufacture special-shaped pressure-bearing components such as cylinders, head flanges and equipment end covers, meeting the precision blanking requirements of equipment.
2. Rolling and Bending Processing: With excellent plasticity, Boiler Plate can be rolled into shapes to fabricate pressure vessel cylinders and pipeline tanks, and bent into various equipment brackets and pressure-bearing connecting plates.
3. Groove Welding Processing: Ordinary Boiler Plate and High Strength Boiler Plate can be groove-welded with beautiful weld formation and qualified strength, satisfying the sealing welding requirements of high-pressure equipment.
4. Heat Treatment Finishing: Secondary normalizing and tempering treatment can be performed on Boiler Plate to further optimize plate toughness and pressure resistance, adapting to ultra-high pressure and ultra-high temperature harsh working conditions.
8. Packaging, Quality Inspection & Delivery
1. Packaging Standard: Finished Boiler Plate is multi-point reinforced with steel strapping bands and supported by wooden battens at the bottom with professional anti-rust protection on the plate surface. Export orders adopt special marine packaging with moisture-proof, rain-proof and salt spray-proof performance to avoid corrosion and deformation during long-distance transportation.
2. Quality Inspection Guarantee: Each batch of Boiler Plate undergoes chemical composition analysis, tensile test, high-temperature mechanical property test and low-temperature impact test. UT ultrasonic non-destructive flaw detection is carried out on demand. We can provide original factory MTC material reports and special equipment qualification certificates, supporting authoritative third-party testing.
3. Delivery Cycle: Standard-specification Boiler Plate, Ordinary Boiler Plate and High Strength Boiler Plate are in sufficient stock and delivered within 3-7 working days; customized plates requiring heat treatment, flaw detection and ultra-thick non-standard processing are delivered within 10-15 working days.
4. Logistics Distribution: Support full-truck and LCL domestic transportation, and port docking for export shipment, adapting to various foreign trade terms such as FOB and CIF.
9. Storage & Usage Precautions
1. Boiler Plate shall be stored in a dry and ventilated indoor warehouse with height isolation from the ground. Outdoor exposure to rain and water immersion is strictly prohibited to prevent plate surface rusting and oxidation peeling, which may affect subsequent welding and flaw detection accuracy.
2. Ordinary Boiler Plate andHigh Strength Boiler Plate shall be stacked separately by grade, thickness and working condition grade with clear identification. Mixing and misapplication are strictly forbidden to avoid potential safety hazards caused by unqualified pressure-bearing equipment performance.
3. Special lifting tools must be used for handling Boiler Plate. Direct scratching and collision on the plate surface by steel wires are prohibited to prevent plate deformation and surface damage and ensure intact appearance and internal performance of the plate.
4. Select plates strictly according to equipment working conditions. Ordinary Boiler Plate is forbidden to replace High Strength Boiler Plate for high-pressure, high-temperature and continuous operation working conditions to eliminate risks of equipment high-temperature deformation and pressure leakage.
5. Welding of Boiler Plate must strictly follow special equipment welding process specifications. Process evaluation shall be conducted in advance for thick plate components to avoid welding stress concentration, lamellar tearing and other defects, ensuring pressure-bearing safety of equipment.
10. Supporting Derivative Products
- Flaw-detected Boiler Plate: Grade 1/2/3 UT ultrasonic flaw-detected Boiler Plate with zero internal defects, suitable for core pressure-bearing parts of high-pressure and high-safety grade special equipment
- Normalized High Strength Boiler Plate: Q355R/Q370R normalized High Strength Boiler Plate with upgraded high-temperature resistance and fatigue resistance, adapting to large-scale power station and high-pressure chemical equipment
- Custom Cut Boiler Plate: Original Boiler Plate customized into fixed-size plates, special-shaped parts and groove parts, providing one-stop supporting materials for pressure-bearing equipment processing and saving customers' processing costs
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