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Help CenterSteel Sheet & Plate & Boiler Steel Plate，Q345R、Q370R、13MnNiMoR、15CrMoR、14Cr1MoR、12Cr1MoVR
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1. Product Overview
Boiler Steel Plate refers to special pressure-bearing steel plate for boilers, manufactured in accordance with GB/T 713-2023. It is specially developed for industrial boilers, power station boilers and waste heat boilers & high-temperature steam heat exchange equipment. Produced by rolling fully killed clean steel slabs refined via LF+VD vacuum degassing, it strictly controls harmful impurities sulfur and phosphorus. Its core advantages include high-temperature long-term strength, creep resistance, thermal fatigue resistance under alternating cold & hot cycles and stable high-temperature weldability. It bears alternating high temperature & high pressure steam loads for long-term service, serving as core pressure-bearing plate for boiler drums, headers, superheaters, water walls and boiler heads.
2. Core Product Advantages
Outstanding High-temperature Creep ResistanceComplete series of carbon-manganese steel & Cr-Mo heat-resistant alloy grades. Slow strength attenuation under long-term service at 350℃~560℃, effectively preventing creep deformation, bulging and cracking risks during long-term boiler operation.
Strong Resistance to Thermal Fatigue from Cold & Hot AlternationRefined grain clean steel smelting, free of thermal fatigue cracks under frequent temperature rise & drop alternating stress, ideal for frequently started & stopped industrial boilers and waste heat recovery equipment.
Extremely Low Welding Crack SensitivityLow carbon equivalent formula, thick plates can be welded without high-temperature preheating. Weld joint high-temperature strength & impact toughness match base metal, complying with special equipment supervision welding standards for boilers.
Strict Control of Internal DefectsGrade Ⅰ / Grade Ⅱ full-plate ultrasonic testing available before delivery, free of lamination, inclusion, shrinkage cavities and internal microcracks, meeting mandatory safety inspection requirements for boilers.
Complete Heat-resistant Material System for High TemperatureGrades classified for medium-low temperature carbon steel, medium-high temperature low alloy steel and high-temperature Cr-Mo heat-resistant steel, covering atmospheric, medium, high and ultra-high pressure boilers of all power ranges.
Wide Thickness Range & Flexible Custom LengthOne-stop supply from thin plate to ultra-heavy plate, custom fixed length & multiple length cutting available to reduce customer blanking loss.
3. Main Executive Standards (Domestic & International Export Standards)
Domestic 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
GB/T 2970 Ultrasonic testing method for heavy steel plates
GB 150 General specification for pressure equipment
International Export Standards
EN 10028-2 Flat steel products for pressure purposes at elevated temperatures P265GH, P355GH
ASTM A515/SA515M Carbon steel plates for moderate & high temperature boiler service
ASTM A387/SA387M Chromium-molybdenum alloy steel plates for high temperature service Gr11, Gr12, Gr22
JIS G3103 Carbon & molybdenum alloy steel plates for boilers and pressure vessels
4. Common Material Grades Classification
1. Medium-low Temperature Carbon Boiler Plate (≤350℃, Civil & Small Industrial Boilers)
Q245R (Former 20G), Export Equivalents: P265GH, SA515 Gr60Yield strength ≥245MPa, for low-pressure boiler shells, drums and heat exchangers
2. Medium Temperature High Strength Low Alloy Boiler Plate (350~420℃, Power Station & Medium-pressure Industrial Boilers)
Q345R, Q370R, 13MnNiMoR, Export Equivalents: P355GH, SA515 Gr70High strength, for medium & large boiler drums, headers and water walls
3. High-temperature Cr-Mo Heat-resistant Boiler Plate (450~560℃, High-pressure Power Station & Waste Heat High-temperature Components)
15CrMoR, 14Cr1MoR, 12Cr1MoVR, 12Cr2Mo1R, Export Equivalents: SA387 Gr12, Gr22Superior high-temperature oxidation & creep resistance, dedicated for superheaters, reheaters and high-temperature headers
4. Hydrogen Service Temper Embrittlement Resistant Boiler Plate (Chemical Waste Heat Boilers, Hydrogenation Supporting Boilers)
14Cr1MoR(H), suitable for high-temperature hydrogen-containing medium working conditions
5. Specification Range
Thickness: 6mm～200mm, custom ultra-heavy plate up to 250mm for power station boilers
Width: 1500mm～4000mm, mainstream sizes 1800/2200/2500/3000mm
Length: 2000mm～12000mm, custom fixed length & special blanking for boiler heads
Delivery Condition: As rolled, controlled rolling, normalized, normalized + tempered, quenched & tempered (mandatory for Cr-Mo alloy)
Surface Treatment: Original hot rolled black surface, shot blasting rust removal, epoxy anti-rust primer coating
NDT Requirement: Grade Ⅰ UT (mandatory for high-pressure boilers), Grade Ⅱ UT, optional MT magnetic particle & PT penetrant inspection
6. Complete Production Process
Converter steelmaking → LF refining + VD vacuum degassing impurity removal → Continuous casting slab reheating → High-pressure water descaling → TMCP controlled rolling → Hot straightening → Heat treatment (Normalizing / Tempering / QT) → Surface grinding & cleaning → Full-plate ultrasonic testing → Dimensional re-inspection → Material marking stenciling → CNC fixed-length cutting → Anti-rust coating → Wooden pallet strapping & delivery
7. Quality Inspection Items (EN10204 3.1 Material Certificate Attached)
Dimensional Inspection: Thickness, width, length, flatness, camber, edge burr
Surface Inspection: Full inspection for cracks, scabs, lamination, scratches and oxide scale defects
Chemical Spectrum Analysis: Strictly controlled S≤0.015%, P≤0.025% with ultra-low impurities
High-temperature Mechanical Properties: Yield strength, tensile strength, percentage elongation and impact energy at room & design temperature
Process Test: 180° cold bending test, welding procedure qualification test piece
Non-destructive Testing: Full-plate ultrasonic inspection to detect internal lamination, shrinkage cavities and microcracks
Special Heat-resistant Test: High-temperature stress rupture & creep test (for Cr-Mo heat-resistant orders)
8. Main Application Fields
Thermal Power Station BoilersPower station boiler drums, water walls, economizers, superheaters, reheater headers, boiler heads and flue pressure-bearing shells
Industrial Waste Heat BoilersWaste heat recovery boilers for steel, chemical and coking industries, high-temperature steam heat exchangers and steam storage drums
Civil & Industrial Boiler EquipmentCoal/gas/biomass steam boilers, hot water boiler shells, furnace liners and steam manifolds
Petrochemical High-temperature EquipmentHydrogenation units, high-temperature distillation towers, thermal oil furnaces and high-temperature steam pipe shells
New Energy Supporting EquipmentBiomass power generation boilers, waste incineration waste heat boilers and energy storage heat exchange pressure equipment
9. Packaging & Export Logistics
Each plate protected by edge iron guards to avoid collision, coated with anti-rust primer, layered separated on solid anti-slip wooden pallets, fully bundled with steel strips and covered with rain tarpaulin for long-term sea moisture-proof.
Stock ready within 5-7 days, container loading at Tianjin Port. FOB, CIF, CFR trade terms acceptable.
Attached complete documents: EN10204 3.1 material certificate, heat treatment report, ultrasonic NDT report, high-temperature mechanical test report, packing list, commercial invoice.
10. Customization & Supporting Services
CNC flame/plasma cutting, beveling and boiler head blanking for non-standard thickness, width & length
Custom heat treatment: Normalizing, normalized + tempered, QT dedicated for Cr-Mo heat-resistant steel
Full set NDT service: Grade Ⅰ UT for high-pressure boilers, MT/PT surface flaw detection
Surface pretreatment: Shot blasting rust removal, thick-layer epoxy anti-rust primer coating
Small batch sample orders & full container bulk export orders are both acceptable
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