Plates for the Oil, Gas & Energy Industry
Hoger Sanat Pars supplies a comprehensive range of steel plates for upstream, midstream, and downstream oil and gas applications. From atmospheric storage tanks to high-pressure reactors, offshore platforms to Arctic-grade pipelines, our plate portfolio covers the full spectrum of project requirements.
All plates are sourced from certified mills with full material traceability, mill test reports (MTRs / EN 10204 Type 3.1 or 3.2), and optional third-party inspection.
Plates
PAGE 1: CARBON STEEL PLATES
Carbon Steel Plates
General-Purpose Structural & Fabrication Plates
Carbon steel plates form the foundation of most oil and gas fabrication projects. They offer excellent weldability, good formability, and cost-effective performance for non-pressurized and moderate-service applications.
Available Standards & Grades
| Standard | Grades |
|---|---|
| ASTM A36 | A36 (single grade) |
| ASTM A283 | Grade C, Grade D |
| EN 10025-2 | S235JR, S235J0, S235J2, S275JR, S275J0, S275J2, S355JR, S355J0, S355J2, S355K2 |
| JIS G3101 | SS400 |
| JIS G3106 | SM400A/B/C, SM490A/B/C, SM490YA/YB |
Dimensional Range
Parameter Range
Thickness 1.5mm to 300mm
Width 1000mm to 4500mm
Length 2000mm to 18000mm
Condition Hot Rolled, Normalized, TMCP
Typical Applications in Oil & Gas
· Atmospheric storage tank shells, roofs, and bottoms (API 650 tanks)
· Pipe supports, saddles, and secondary structural steel
· Walkways, platforms, handrails, and grating
· Non-critical piping flanges and blinds
· Equipment skids and small module frames
· Construction site temporary works
Key Properties
Property Requirement
Weldability Excellent (CEV typically ≤ 0.40 for S355J2 and equivalent grades)
Formability Good cold forming capability for press brake and rolling
Impact Testing Optional: J0 (0°C), J2 (-20°C), K2 (-40°C) per EN 10025
Through-Thickness Available with Z15, Z25, Z35 per EN 10164 when specified
Our Supply Capability
· Ex-stock availability for common sizes (S275JR, S355J2, A36, SS400)
· Mill-direct sourcing for project quantities
· Cut-to-size and edge preparation services available
· Full MTR traceability per EN 10204 Type 3.1
PAGE 2: HIGH STRENGTH LOW ALLOY (HSLA) PLATES
High Strength Low Alloy (HSLA) Plates
Higher Strength. Lower Weight. Engineered Performance.
HSLA plates provide significantly higher yield and tensile strength compared to standard carbon steel. By reducing the weight of structures while maintaining load-bearing capacity, HSLA plates are the material of choice for offshore platforms, jack-up rigs, and heavy lifting equipment in the oil and gas sector.
Available Standards & Grades
Standard Grades Minimum Yield Strength
ASTM A572 Grade 42, 50, 55, 60, 65 290 – 450 MPa
ASTM A709 Grade 36, 50, 50W, HPS 50W, HPS 70W, HPS 100W 250 – 690 MPa
EN 10025-3 S275N/NL, S355N/NL, S420N/NL, S460N/NL 275 – 460 MPa (Normalized)
EN 10025-4 S275M/ML, S355M/ML, S420M/ML, S460M/ML 275 – 460 MPa (TMCP)
EN 10025-6 S460Q/QL/QL1, S500Q, S550Q, S620Q, S690Q/QL/QL1 460 – 690 MPa (Q&T)
API 2W Grade 50, Grade 60 345 – 414 MPa
Dimensional Range
Parameter Range
Thickness 3mm to 200mm (Q&T grades typically up to 150mm)
Width 1500mm to 4500mm
Length Up to 18000mm
Condition Normalized, TMCP, Quenched & Tempered
Typical Applications in Oil & Gas
· Offshore platform topsides, jacket structures, and leg nodes
· Jack-up rig legs, chords, and spud cans
· Crane pedestals, A-frames, and heavy lifting equipment
· High-pressure piping and manifold skids
· Subsea templates and manifolds
· Blast-resistant modules and accommodation units
Key Properties
Property Benefit
High Yield Strength Enables lighter structures, reducing foundation and lifting costs
Good Weldability Low carbon equivalent values (CEV) reduce preheat requirements
Low-Temperature Toughness M/ML and Q/QL grades tested to -20°C, -40°C, -50°C, -60°C
Through-Thickness Z15, Z25, Z35 available for node and tubular joint applications
PAGE 3: PRESSURE VESSEL PLATES
Pressure Vessel Plates
Certified for Containment. Engineered for Safety.
Pressure vessel plates are the single most critical plate category in downstream oil and gas. They form the shells, heads, and internals of pressure-containing equipment operating under high pressure, elevated temperature, and corrosive process conditions. Every plate we supply comes with full EN 10204 Type 3.1 or 3.2 certification.
Sub-Section A: Standard PVQ Plates
ASTM A516 / ASME SA516 Pressure Vessel Quality Plates
The industry standard for welded pressure vessels in refinery, gas processing, and petrochemical service.
Grade Minimum Tensile Strength Typical Service
A516 Grade 60 415 – 550 MPa Moderate pressure, sweet service
A516 Grade 65 450 – 585 MPa Standard refinery vessels, separators
A516 Grade 70 485 – 620 MPa The workhorse grade. Most common PVQ plate in oil and gas
Available Conditions: As-Rolled, Normalized, Stress Relieved
Optional Testing: Charpy V-Notch to -46°C, through-thickness tensile (Z-quality), simulated PWHT
Sub-Section B: High-Temperature Plates (Chrome-Moly)
ASTM A387 / ASME SA387 Chromium-Molybdenum Alloy Steel Plates
Designed for elevated temperature service where carbon steel strength degrades. Chrome-moly plates resist hydrogen attack and high-temperature creep in refinery and petrochemical reactors.
Grade Alloy Composition Typical Maximum Service Temperature
A387 Grade 11 1.25Cr – 0.5Mo Up to 600°C
A387 Grade 12 1Cr – 0.5Mo Up to 550°C
A387 Grade 22 2.25Cr – 1Mo Up to 650°C
A387 Grade 5 5Cr – 0.5Mo Up to 550°C (resistant to sulfur-bearing streams)
A387 Grade 9 9Cr – 1Mo Up to 650°C (enhanced oxidation resistance)
Typical Applications: Hydrocrackers, hydrotreaters, catalytic reformers, delayed coker drums, hot feed/effluent exchangers
Sub-Section C: HIC-Resistant Plates (Sour Service)
Hydrogen Induced Cracking (HIC) Resistant Pressure Vessel Plates
Specifically produced and tested for wet H2S (sour) environments. These plates undergo rigorous HIC and SSC testing to prevent hydrogen blistering and cracking in amine contactors, sour water strippers, and gas sweetening units.
Standard Testing Requirement
NACE TM0284 HIC test (96 hours in specified sour solution). Crack Length Ratio (CLR), Crack Thickness Ratio (CTR), Crack Sensitivity Ratio (CSR) limits as specified
NACE MR0175 / ISO 15156 Sulfide Stress Cracking (SSC) hardness and testing requirements for sour service materials
Proprietary HIC Grades A516 Grade 60/65/70 HIC, A537 Class 1/2 HIC
Key Process Requirements:
· Low sulfur content (typically ≤ 0.002% S)
· Calcium treated for inclusion shape control
· Clean steel practices (low inclusions)
· Tight chemistry control on Mn, P, and S
Sub-Section D: Low-Temperature & Cryogenic Plates
Plates for Sub-Zero and Cryogenic Storage Applications
From LPG spheres operating at -46°C to massive LNG storage tanks at -162°C, low-temperature and cryogenic plates demand verified notch toughness at the minimum design metal temperature (MDMT).
Low-Temperature Carbon & Carbon-Manganese Plates (-40°C to -60°C)
Grade Typical MDMT Application
A516 Grade 70 Normalized -46°C LPG storage spheres, propane/de-propane vessels
A537 Class 1 -60°C LPG bullets, ethylene storage (low-pressure)
A537 Class 2 -60°C Higher strength option for low-temperature vessels
Nickel Alloy Steel Plates for Cryogenic Service (-100°C to -196°C)
Grade Nickel Content Typical MDMT Application
ASTM A203 Grade D / E 2.25% – 3.5% Ni -101°C to -107°C Low-temperature separators, smaller ethylene vessels
ASTM A645 5% Ni -170°C Ethylene storage, ethane recovery
ASTM A353 / A553 Type I 9% Ni -196°C LNG storage tank inner shell (the global standard for LNG)
Why 9% Nickel Steel for LNG?
· Excellent notch toughness at -196°C (Charpy typically > 100 Joules)
· High strength (690 MPa minimum tensile)
· Lower cost and thinner sections compared to austenitic stainless steel
· Proven track record in LNG terminals worldwide
Austenitic Stainless Steel Cryogenic Plates
Grade Minimum Service Temperature Application
304L (UNS S30403) -196°C Small cryogenic vessels, inner piping, vacuum jackets
316L (UNS S31603) -196°C Where enhanced corrosion resistance is required
Cryogenic Plate Supply Summary
Grade Temp Range Typical Use
A516 Gr.70 Norm. Down to -46°C LPG storage
A537 Class 1/2 Down to -60°C LPG, ethylene
2.25-3.5% Ni (A203) Down to -107°C Low-temp separators
5% Ni (A645) Down to -170°C Ethylene, ethane
9% Ni (A353/A553) Down to -196°C LNG inner tanks
304L / 316L Down to -196°C Small vessels, pipework
Sub-Section E: Clad Pressure Vessel Plates
(See separate Clad & Composite Plates page for full details. The Pressure Vessel Plates page should include a brief mention with a link.)
PAGE 4: BOILER PLATES
Boiler Plates
High-Temperature Certified Plates for Steam Generation & Heat Recovery
Boiler plates are specifically qualified for the fabrication of fired and unfired steam drums, boilers, and high-temperature pressure equipment. They are certified for elevated temperature tensile properties and are often subject to additional testing beyond standard PVQ plates.
Available Standards & Grades
Standard Grades Key Application
ASTM A515 Grade 60, 65, 70 Boiler drums and shells (intermediate to high temperature)
ASTM A516 Grade 60, 65, 70 Boilers requiring moderate/low-temperature notch toughness
ASTM A204 Grade A, B, C (C-0.5Mo) Elevated temperature boilers, waste heat recovery
ASTM A299 Grade A, B (Mn-Si) High-temperature boilers and pressure vessels
ASTM A302 Grade A, B, C, D (Mn-Mo, Mn-Mo-Ni) High-strength boiler applications
EN 10028-2 P235GH, P265GH, P295GH, P355GH European standard boiler and pressure vessel plates
Key Properties & Certifications
Requirement Detail
Elevated Temperature Tensile Certified yield and tensile properties at design temperature (typically up to 600°C)
Creep Resistance Long-term creep data available for chrome-moly and C-Mo grades
Notch Toughness Charpy V-Notch testing per specification (optional for standard grades)
Weldability Carbon Equivalent (CEV) typically ≤ 0.43-0.50 depending on grade
PWHT Simulated post-weld heat treatment testing available
Typical Applications in Oil & Gas
· Steam boiler drums (utility and package boilers)
· Waste heat recovery steam generators (HRSGs) in cogeneration
· Fired heater shells and tubesheets in refineries
· Steam injection boilers for thermal EOR (Enhanced Oil Recovery)
· Deaerator vessels
· Blowdown drums and flash tanks
Boiler Plate Grades Quick Reference
Grade Maximum Service Temp (approx.) Notes
A515 Grade 70 Up to 480°C The standard boiler plate
A204 Grade B (C-0.5Mo) Up to 520°C Improved creep resistance
A299 Grade A/B Up to 540°C Higher strength at temperature
A302 Grade B/C Up to 350°C High strength, lower temp
PAGE 5: STRUCTURAL STEEL PLATES
Structural Steel Plates
Heavy-Section Plates for Primary Structural Frameworks
Structural steel plates form the load-bearing skeleton of oil and gas processing plants, refineries, and terminals. These heavy-section plates are used in pipe racks, equipment structures, modules, and blast-resistant buildings.
Available Standards & Grades
Standard Grades Yield Strength Range
ASTM A36 Single grade 250 MPa minimum
ASTM A572 Grade 50, 55, 60, 65 345 – 450 MPa
ASTM A588 Grade A, B, K (Weathering Steel) 345 MPa
EN 10025-2 S235, S275, S355, S450 (J0/J2/K2 options) 235 – 450 MPa
EN 10025-3 S275N/NL, S355N/NL, S420N/NL, S460N/NL 275 – 460 MPa (Normalized)
EN 10025-4 S275M/ML, S355M/ML, S420M/ML, S460M/ML 275 – 460 MPa (TMCP)
EN 10025-6 S460Q/QL, S500Q, S550Q, S620Q, S690Q/QL 460 – 690 MPa (Q&T)
Dimensional Range
Parameter Range
Thickness 6mm to 400mm
Width 1500mm to 4500mm
Length Up to 18000mm
Condition Hot Rolled, Normalized, TMCP, Q&T
Optional Properties
Property Specification
Low-Temperature Toughness J0 (0°C), J2 (-20°C), K2 (-40°C), L (-50°C), QL1 (-60°C)
Through-Thickness (Z-Quality) Z15, Z25, Z35 per EN 10164 for welded joints susceptible to lamellar tearing
Weathering Resistance ASTM A588 (Corten equivalent). Self-protecting oxide patina for unpainted structures
Weldability Low CEV grades available for thick sections and heavy welding
Typical Applications in Oil & Gas
· Pipe racks and cable tray support structures
· Process module primary and secondary steel
· Equipment support structures (exchanger cradles, vessel skirts, column supports)
· Blast-resistant and fire-rated buildings
· Flare stacks, derricks, and masts
· Compressor and turbine foundation frames
· Helideck support structures
PAGE 6: OFFSHORE & SHIPBUILDING PLATES
Offshore & Shipbuilding Plates
Classification Society-Certified Plates for Marine & Offshore Structures
Offshore and shipbuilding plates are manufactured and certified to meet the demanding requirements of major classification societies: ABS, DNV, Lloyd’s Register, Bureau Veritas, and others. These plates undergo rigorous testing for low-temperature toughness, through-thickness properties, and fracture resistance.
Available Standards
Standard Scope
ASTM A131 Structural steel for ships (hull plates, deck, bulkheads)
EN 10225 Weldable structural steels for fixed offshore structures
EN 10025-3/4/6 Structural steels for offshore (when certified with Class Society endorsement)
API 2H Carbon-manganese steel plate for offshore platform tubular joints
API 2W Steel plate for offshore structures produced by TMCP
API 2Y Quenched & tempered steel plate for offshore structures
NORSOK M-120 Norwegian standard for structural steel (widely used in North Sea)
Classification Society Grades
Grade Minimum Yield Strength Typical MDMT Application
A 235 MPa +20°C Minor structural (non-critical)
B 235 MPa 0°C Internal stiffening
D 235 MPa -20°C Hull shell, decks
E 235 MPa -40°C Shell plating, critical structure
AH32 to FH32 315 MPa +20°C to -60°C Higher strength option
AH36 to FH36 355 MPa +20°C to -60°C The most common offshore grade
AH40 to FH40 390 MPa +20°C to -60°C High-strength jackets and topsides
EN 10225 S355G2+N 355 MPa -20°C North Sea standard
EN 10225 S420G2+M 420 MPa -40°C High-strength offshore
EN 10225 S460G2+M 460 MPa -40°C Heavy lift and critical nodes
Key Testing Requirements
Test Purpose
Charpy V-Notch Verified impact toughness at MDMT (typically -20°C to -60°C)
Through-Thickness Tensile (Z-Quality) Z15, Z25, Z35 for welded joints at risk of lamellar tearing
CTOD (Crack Tip Opening Displacement) Fracture toughness testing for critical welded nodes (per BS 7448)
Ultrasonic Testing Internal soundness per ASTM A578 / EN 10160
Typical Applications in Oil & Gas
· Offshore platform jackets and topsides
· FPSO hulls, decks, and turret structures
· Jack-up rig legs, chords, and spud cans
· Subsea templates and manifold protection structures
· Offshore living quarters and helidecks
· Single buoy mooring (SBM) and CALM buoy structures
· Offshore wind turbine transition pieces and monopiles
Arctic-Grade Offshore Plates
For operations in Arctic and sub-Arctic environments, plates with Charpy testing to -50°C and -60°C are standard:
Grade Minimum MDMT Notes
FH32 / FH36 / FH40 -60°C Class Society Arctic grades
EN 10225 S355G10+N -40°C North Sea cold-water standard
S420ML / S460ML -50°C TMCP with low-temperature properties
S460QL1 -60°C Q&T for extreme cold
PAGE 7: LINE PIPE & API PLATES
Line Pipe & API Plates
Skelp & Plate for API 5L Line Pipe Manufacturing
These plates are specifically produced for the fabrication of large-diameter longitudinal seam-welded (LSAW) and spiral-welded (SSAW) line pipe. They meet the chemistry, mechanical property, and testing requirements of API 5L for oil and gas transmission pipelines.
Available Standards & Grades
Standard Grades
API 5L Grade B, X42, X46, X52, X56, X60, X65, X70, X80 (PSL1 and PSL2)
ISO 3183 L245, L290, L360, L390, L415, L450, L485, L555
API 2H Grade 50 (offshore structural tubular joints)
API 2W Grade 50, Grade 60 (TMCP offshore structural)
Key Properties
Requirement Detail
Chemistry Control Tight control on CEV and PCM (weldability parameters). Sulfur and phosphorus limits per PSL2
Tensile Properties Yield, tensile, and elongation verified per API 5L Table 7
Charpy Testing Transverse Charpy at specified test temperature (typically 0°C to -46°C)
DWT (Drop Weight Tear Test) For propagation control in gas pipelines. Required for X65+ grades
Sour Service (Annex H) HIC (NACE TM0284) and SSC (NACE MR0175) testing for sour gas service
HIC Testing CLR ≤ 15%, CTR ≤ 5%, CSR ≤ 2% (typical project requirements)
Typical Plate Dimensions for Pipe Manufacturing
Parameter Range
Thickness 6mm to 50mm
Width 1500mm to 4680mm (suited to common pipe ODs)
Length Up to 18000mm
Condition Normalized, TMCP, Q&T (per grade requirement)
Typical Applications
· LSAW (Longitudinal Submerged Arc Welded) line pipe feedstock
· SSAW (Spiral Submerged Arc Welded) skelp
· Hot induction bend mother pipe
· Flanges, tees, and fabricated fittings from plate
· Pig launchers and receivers
· Flowline and gathering line pipe
PAGE 8: CLAD & COMPOSITE PLATES
Clad & Composite Plates
Corrosion-Resistant Alloy (CRA) Layer on Carbon Steel Base
Clad plates combine the structural strength and low cost of carbon or low-alloy steel with the corrosion resistance of a high-alloy cladding layer. They are an economical alternative to solid alloy construction for process equipment handling corrosive fluids.
Bonding Processes
Process Description
Hot Roll Bonded Alloy sheet is bonded to carbon steel slab and rolled to final thickness under heat and pressure. Produces a true metallurgical bond.
Explosion Bonded Pressure from controlled explosive detonation bonds the clad layer to the base plate. Superior bond strength for demanding applications and thick cladding layers.
Weld Overlay CRA is deposited onto the base plate by automated welding. Suitable for smaller sections, nozzles, and field repairs.
Base Materials (Backer)
Standard Grade
ASTM A516 Grade 60, 65, 70 (standard PVQ backer)
ASTM A387 Grade 11, 12, 22 (for high-temperature clad vessels)
ASTM A36 General structural backer
EN 10025-3 S355N/NL (structural / pressure backer)
Cladding Materials
Alloy Family Specific Grades Typical Application
Austenitic Stainless 304L, 316L, 317L, 321, 347 General corrosion resistance, medium corrosive fluids
Duplex Stainless UNS S31803 (2205), UNS S32205 Chloride stress corrosion cracking resistance, produced water
Super Duplex UNS S32750 (2507), UNS S32760 Seawater, high-chloride brines, aggressive produced water
Nickel Alloys Inconel 625 (UNS N06625), Inconel 825 (UNS N08825), Hastelloy C276 (UNS N10276) Acid gas, high H2S, chlorides, high-temperature acids
Monel Monel 400 (UNS N04400) Hydrofluoric acid, seawater, de-aerated acids
Titanium Grade 1, 2 Extreme chloride resistance, seawater, oxidizing acids
Applicable Standards
Standard Scope
ASTM A263 Stainless chromium steel-clad plate
ASTM A264 Stainless chromium-nickel steel-clad plate
ASTM A265 Nickel and nickel-base alloy-clad plate
ASTM B898 Reactive and refractory metal-clad plate (titanium, zirconium, tantalum)
ASME SA263/SA264/SA265 ASME equivalents for pressure vessel construction
Typical Applications in Oil & Gas
· Sour gas separators (H2S, CO2 service)
· Amine contactors and regenerators
· Produced water treatment vessels
· Hydroprocessing reactors
· Heat exchanger shells and channels
· Desalter vessels
· Acid gas removal units
· Pipe spools and fittings fabricated from clad plate
Cladding Thickness Ratio
Total Plate Thickness Typical Clad Thickness Clad Ratio
10mm 1.5mm – 2mm 15% – 20%
25mm 3mm 12%
50mm 3mm – 5mm 6% – 10%
100mm+ 3mm – 5mm 3% – 5%
PAGE 9: WEAR & ABRASION RESISTANT PLATES
Wear & Abrasion Resistant Plates
High-Hardness Protection Against Abrasive Wear
Wear-resistant plates are through-hardened or surface-hardened steels designed to withstand severe abrasive wear, impact, and sliding contact. In the oil and gas industry, they are essential for handling sand, drill cuttings, and abrasive process slurries.
Common Grades
Grade Nominal Hardness (HBW) Typical Source
400 HBW 400 Hardox 400, XAR 400, Durostat 400, Fora 400
450 HBW 450 Hardox 450, XAR 450
500 HBW 500 Hardox 500, XAR 500, Durostat 500
550 HBW 550 Hardox 550
600 HBW 600 Hardox 600, XAR 600
Dimensional Range
Parameter Range
Thickness 3mm to 160mm
Width Up to 3500mm
Length Up to 16000mm
Key Properties
Property Benefit
High Surface Hardness Resists gouging, scratching, and erosion from abrasive media
Good Toughness Resists cracking under impact (critical for large rock and tool joint strikes)
Weldability Designed to be weldable with low-hydrogen procedures (preheat often required for thicker sections)
Formability Can be cold-formed to large radii (grade dependent)
Typical Applications in Oil & Gas
· Frac sand hoppers, chutes, and conveyors
· Drill cuttings handling and waste transfer systems
· Shale shaker and solids control wear components
· Cyclone and hydrocyclone liners
· Tank liners (abrasive slurry, produced sand)
· Pipe bends and elbows for abrasive slurry
· Bucket and loader protection (oil sands mining)
· Crusher and grinder liners (oil sands)
Grade Selection Guide
Application Recommended Hardness
Moderate abrasive wear, high impact 400 HBW
Sand and fine particle sliding wear 450 – 500 HBW
Heavy abrasive wear, moderate impact (sand, cuttings) 500 HBW
Extreme sliding wear, low impact (cyclones, liners) 550 – 600 HBW