Contact Platform Support
Help CenterSteel Sheet & Plate & Boiler Vessel Plate，Q245R、Q345R、16MnDR、Q355NR、P265GH、P355GH
Related Products
-
Steel Sheet & Plate & Cargo Vessel Hull Plate，AH40/DH40/EH40、AH50/DH50/EH50、EH550NegotiableMOQ: 5 Metric Tons -
Steel Sheet & Plate & Anti-slip Steel Plate，Q235B / SS400 / A36、GI、1060 / 3003 / 5052、Q355BNegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Boiler Steel Plate，ASTM A516 Gr60/70、ASTM A285、EN P265GH、P355GH、JIS G3115 SPV235、SPV345NegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Steel Sheet Pile，Q235B、SY295、Q355B、SY390、S355GP、Q390、Q420、SY430NegotiableMOQ: 5 Metric Tons
-
Steel Rebar & Construction Rebar，HRB400、HRB400E、HRB500、HRB500ENegotiableMOQ: 5 Metric Tons
1. Product Overview
Pressure vessel steel plates are special carbon and low alloy steel plates for pressure-bearing equipment. They are widely used for manufacturing medium & low pressure vessels, storage tanks, heat exchangers, boiler drums and reactors. Strict control over internal inclusions, lamination and segregation ensures excellent room & low temperature impact toughness, stable tensile & yield strength, superior weldability and fatigue resistance. The plates can withstand long-term alternating pressure and temperature to guarantee safe equipment operation.
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 Vessels
International Export StandardsASTM A516 Gr55/60/70, ASTM A537EN 10028 P265GH, P355GHJIS G3115 SPV235/SPV345
Supporting Test StandardsGB/T 228 Tensile Test, GB/T 229 Impact Test, GB/T 241 Hydrostatic Test, Ultrasonic Testing Standard
2. Main Grades & Applicable Working Conditions
2.1 Q245R Carbon Pressure Vessel Plate
Working condition: Normal temperature medium-low pressure storage tanks, common boiler drums, heat exchanger barrels
Performance: Good ductility and weldability, cost-effective; suitable for temperature above -20℃
Mechanical index: Tensile strength 400–520MPa, Yield strength ≥245MPa
2.2 Q345R Low Alloy Pressure Vessel Plate (Most Widely Used)
Working condition: High pressure storage tanks, reactors, waste heat boilers, chemical heat exchange equipment
Performance: Higher strength, stable toughness under medium temperature; applicable for -20℃ ~ 475℃
Mechanical index: Tensile strength 510–650MPa, Yield strength ≥345MPa
2.3 Q355NR Normalized Low-temperature Vessel Plate
Working condition: Low-temperature storage tanks, liquid nitrogen & liquid oxygen storage equipment, pressure vessels for cold northern areas
Performance: Excellent low-temperature impact toughness, qualified impact value at -40℃ without brittle fracture risk
2.4 16MnDR Special Low-temperature Pressure Vessel Plate
Working condition: LPG storage tanks, low-temperature chemical reaction equipment
Performance: Ultra-low temperature impact resistance, stable long-term service at -40℃
2.5 P265GH / P355GH European Standard Vessel Plates for Export
Working condition: Boilers and pressure vessels exported to EU
Performance: Comply with CE pressure equipment certification, stable high-temperature creep performance
3. Specification Parameters
Thickness Range: 6mm ~ 120mm
Width Range: 1500mm / 1800mm / 2000mm / 2200mm / 2500mm
Standard Length: 6000mm, 12000mm, customized random lengths available
Dimensional ToleranceHigh-precision tolerance for pressure-bearing plates in accordance with GB/T713; flatness, camber and unevenness meet pressure vessel processing standards
UT Inspection Grade: Grade Ⅰ / Ⅱ / Ⅲ ultrasonic testing as required
4. Complete Production Process
Steelmaking Refining: LF+VD secondary refining furnace, strictly limit S and P impurities to reduce internal defects
Continuous casting slab forming and surface defect cleaning
Heating & Controlled Rolling: Uniform high-temperature heating followed by controlled rolling to refine grain structure and improve toughness
Key Heat Treatment ProcessDelivery under normalized, tempered or controlled rolling state; customized heat treatment for each grade to stabilize impact toughness
Shot blasting to remove oxide scale for convenient UT inspection and welding
Full physical-chemical testing + 100% ultrasonic testing
Cut to fixed length, marking spraying, packing & warehousing
5. Mandatory Factory Inspection Items
Spectral composition analysis: Strict control of C, Mn, Si, S, P and alloy element content
Mechanical tests: Room-temperature tensile, high-temperature tensile, normal/low temperature V-notch impact and hardness test
Cold bending test: No cracks or lamination after 180° bending
100% ultrasonic testing: Detect internal lamination, shrinkage cavities, cracks and inclusions
Visual inspection per plate: Free of scabs, cracks, double skins and surface lamination defects
6. Main Application Fields
Chemical Industry: Various reactors, chemical raw material storage tanks, high-pressure heat exchangers
Power & Boiler Industry: Boiler drums, waste heat boiler barrels, steam headers
Oil & Gas Energy: Crude oil tanks, LPG low-temperature storage tanks, oil & gas buffer tanks
Pharmaceutical & Food Pressure Equipment: Sterile pressure reaction equipment, thermal insulation storage tanks
Special Equipment Manufacturing: Air compressor gas tanks, high-pressure water tanks, mobile pressure vessels
7. Core Product Advantages
High pressure safety factor: Low impurities and segregation, few internal defects with high UT qualification rate
Balanced toughness at wide temperature range: Stable impact performance at room, low and medium temperature, anti-brittle fracture
Superior weldability: Low carbon equivalent, no welding cracks without complex post-weld heat treatment
Full thickness range, stable forming performance for super thick large tank fabrication
Complete heat treatment options, adaptable to normal, medium and low temperature pressure-bearing working conditions
8. Delivery, Packing & Logistics
Delivery State: Controlled rolling, normalized or tempered as requested; shot blasted rust-free surface
Marking: Each plate sprayed with grade, standard, heat batch number, dimension, UT grade and qualified serial number
Packing: Thin plates bundled with steel strips on wooden pallets; thick plates fixed separately with rainproof film coverage
Delivery Lead TimeIn-stock Q245R/Q345R: Delivery within 5–7 days; customized low-temperature special vessel plates and extra-thick plates: 7–10 days, container shipment available from Tianjin Port
Attached Shipping Documents: Original Mill Test Certificate, tensile & impact test report, ultrasonic inspection report, factory certificate
Send Inquiry to This Supplier
You May Also Like
-
Steel Wire & Galvanized Steel Wire，Q195 / SAE1008、45#, 55#, 60#、65Mn, 72A, 82B、60Si2MnA, 55SiCrANegotiableMOQ: 5 Metric Tons
-
Flat Steel & Flat Steel Bar，Q235B / SS400 / A36、Q355B / S355JR、20#、35#、45#、65Mn、60Si2MnNegotiableMOQ: 5 Metric Tons
-
Steel Angle & Angle Bar，Q235B / SS400 / A36、Q355B / S355JR 、45#NegotiableMOQ: 5 Metric Tons
-
Steel H Beam & H Beam，Q235B / SS400 / A36、Q355B / S355JR / A572 Gr50、Q235NH、Q355NHNegotiableMOQ: 5 Metric Tons
-
Galvanized Flat Bar＆Flat Steel，GB/T 704, GB/T 13912, ASTM A123, JIS G3302NegotiableMOQ: 5 Metric Tons
-
Steel Rebar＆Deformed Steel Bar，HRB400、HRB400E、HRB500、HRB500E、Grade 40、Grade 60NegotiableMOQ: 5 Metric Tons
-
Steel Angle＆Galvanized Angle Steel，Q235B, Q355B, S235JR, S355JR, A36, A572 Gr50NegotiableMOQ: 10 Metric Tons
-
Steel H Beam＆H Beam ,Q235B, Q355B, S235JR, S235J0, S235J2, S355JR, S355J0, S355J2, A36, A572 Grade 50, A992NegotiableMOQ: 10 Metric Tons
-
Steel Pipe & Tube＆Seamless Steel Pipe，Q235B, Q355B, 10#, 20#, 16Mn, L245, L360, SS330, SS400, A53 Gr.BNegotiableMOQ: 5 Metric Tons
-
Steel Wire＆Galvanized Steel Wire，Q195, Q235, 45#, 55#, 60#, 65#, 70#, 72A, 82BNegotiableMOQ: 5 Metric Tons
