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Help CenterSteel Sheet & Plate & Boiler Steel Plate，ASTM A516 Gr60/70、ASTM A285、EN P265GH、P355GH、JIS G3115 SPV235、SPV345
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1. Product Overview
Boiler steel plates are special hot rolled steel plates for pressure-bearing equipment. They are mainly used for high-temperature pressure equipment such as industrial boilers, waste heat boilers, power station boiler drums, header barrels, heat exchangers and steam storage tanks, operating under medium-high temperature and alternating pressure for long service life.The products feature low impurity content, dense internal structure without lamination, stable high-temperature strength, excellent room & high temperature impact toughness, outstanding weldability and good anti-fatigue & creep resistance, which effectively avoid safety hazards such as cracking, bulging and leakage under long-term high-temperature service.
Main Implementation Standards
Chinese National StandardsGB/T 713-2014 Steel Plates and Strips for Pressure EquipmentGB/T 3531 Low Alloy Steel Plates for Low-temperature Pressure Equipment
International Export StandardsASTM A516 Gr60/70, ASTM A285EN P265GH, P355GHJIS G3115 SPV235, SPV345
Supporting Test StandardsTensile test, high & low temperature Charpy impact test, 100% ultrasonic testing, cold bending test, high-temperature mechanical property test
2. Main Steel Grades & Applicable Working Conditions
2.1 Q245R Carbon Boiler Plate
Working condition: Small and medium-sized industrial boilers below 475℃, low-pressure drums, ordinary heat exchangers, normal temperature steam storage tanks
Performance: Good ductility, easy welding, cost-effective, stable service above -20℃
Mechanical index: Tensile strength 400–520MPa, yield strength ≥245MPa
2.2 Q345R Low Alloy Boiler Plate (Most Widely Used Grade)
Working condition: Power station boilers, waste heat boilers, medium & high pressure drums, chemical high-temperature heat exchange equipment, steam buffer tanks
Performance: High medium-high temperature stress rupture strength, excellent creep resistance, applicable for -20℃ ~ 475℃
Mechanical index: Tensile strength 510–650MPa, yield strength ≥345MPa
2.3 16MnDR Special Low-temperature Boiler Plate
Working condition: Low-temperature waste heat boilers, outdoor pressure boilers in northern cold areas, low-temperature steam heat exchange equipment
Performance: Qualified -40℃ low-temperature impact toughness, no brittle fracture risk under low temperature environment
2.4 P265GH, P355GH European Standard Boiler Plates for Export
Working condition: Boilers and pressure vessels exported to EU, heating equipment, compliant with CE pressure equipment certification
Performance: Stable high-temperature metallographic structure, meet European mechanical and UT inspection standards for boiler plates
3. Specification Parameters
Thickness Range: 6mm ~ 120mm
Standard Width: 1500mm, 1800mm, 2000mm, 2200mm, 2500mm
Standard Fixed Length: 6000mm, 12000mm, customized random lengths from 3–14m available
Dimensional ToleranceStrictly comply with high-precision tolerance of pressure-bearing plates specified in GB/T713; flatness and camber meet CNC rolling & cutting requirements for boiler barrels
UT Inspection Grade: Grade Ⅰ / Grade Ⅱ ultrasonic testing available as required
Delivery Heat Treatment State: Controlled rolling, normalized, tempered optional
4. Complete Production Process
Steelmaking Refining: LF+VD secondary refining furnace, strictly limit S and P impurities to reduce high-temperature brittleness and lamination defects
Continuous casting slab forming, surface grinding to remove subcutaneous cracks and inclusion defects
Uniform high-temperature heating, segmented temperature-controlled rolling to refine grain structure and improve high-temperature toughness
Heat treatment process: Matched normalizing / tempering / controlled rolling according to steel grades to stabilize high-temperature mechanical performance
Shot blasting to remove oxide scale for convenient UT inspection and barrel welding
Full physical-chemical mechanical tests + 100% ultrasonic testing per plate
Cut to fixed length, marking spraying, packing & warehousing
5. Mandatory Factory Inspection Items
Full spectral composition analysis: Strictly control carbon equivalent, Mn, Si, S, P trace element content
Mechanical property test: Room-temperature tensile, high-temperature tensile, normal/low temperature V-notch impact and hardness test
180° cold bending test, no cracks, lamination or peeling after bending
100% ultrasonic testing to detect internal lamination, shrinkage cavities, inclusions and internal cracks
Full visual inspection: Free of scabs, double skins, pits and surface cracks
6. Main Application Fields
Thermal Power Station Boilers: Boiler drums, water cooling headers, waste heat boiler barrels, superheater shells
Industrial Heating Boilers: Factory pressure steam boilers, thermal oil furnace shells, heat exchanger tube sheets
Chemical Energy Equipment: High-temperature steam storage tanks, waste heat recovery heat exchange equipment, buffer pressure vessels
Municipal Heating Equipment: Large central heating boilers, pressure tanks for thermal pipe networks
7. Core Product Advantages
High safety factor under high temperature pressure: Clean molten steel with low impurities, few internal defects and high UT qualification rate
Balanced toughness at wide temperature range: Stable impact performance at room, low and medium high temperature, hard to crack under long-term high-temperature cycles
Superior weldability: Low carbon equivalent, few delayed cracks during on-site barrel welding, simplified post-weld heat treatment procedure
Full thickness range, stable forming performance for extra-thick plates, suitable for manufacturing large boiler drums
Complete heat treatment options, adaptable to all boiler working conditions at normal, low and medium high temperature
8. Delivery, Packing & Logistics
Delivery State: Controlled rolling / normalized / tempered delivery, shot blasted black oxide surface
Plate Marking: Each plate sprayed with steel grade, execution standard, heat batch number, thickness & width, UT grade and qualified serial number
Packing: Thin plates bundled with steel strips on wooden pallets with rainproof film; thick plates fixed separately, reinforced seaworthy packing for export
Delivery Lead TimeRegular in-stock Q245R, Q345R boiler plates: Delivery within 3–7 days; customized 16MnDR low-temperature plates and extra-thick plates: 7–10 days, container shipment available from Tianjin Port
Attached Shipping Documents: Original Mill Test Certificate, tensile & impact mechanical test report, ultrasonic inspection report, factory certificate
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