Name: Carbon Steel Plate Supplier | High-Quality Steel Plates
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+86 18954208811

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Carbon Steel Plate Supplier | High-Quality Steel Plates

As a leading carbon steel plate supplier, we provide high-quality steel plates with excellent mechanical properties, superior surface quality, and reliable performance. Our products are manufactured under strict quality control systems, ensuring consistent quality for various industrial applications.

Phone：+86 18954208811

Email：info@hwdsteel.com

WhatsApp：+86 18954208811

Add：Keda Xunfei Weilaigang Building, No. 1 Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province

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◉ PRODUCT SPECIFICATION

1. Material Standards & Grades

Comprehensive Standards Coverage:

ASTM Standards: A36, A283, A285, A516, A572, A573
EN Standards: EN 10025-2 (S235, S275, S355), EN 10028 (P265GH, P295GH, P355GH)
JIS Standards: SS400, SM400, SM490
GB Standards: Q235, Q345, Q195, Q215

Available Grade Categories:

Category	Typical Grades	Key Applications
Structural Steel	A36, S235JR, S355JR, SS400	Building construction, bridges
Pressure Vessel	A516 Gr.55/60/65/70, P265GH, P295GH	Boilers, pressure vessels
High Strength	A572 Gr.50/60, A573 Gr.65, Q345	Heavy equipment, mining
Commercial Quality	A283 Gr.A/B/C/D, Q235	General fabrication

2. Chemical Composition Range (% by weight)

Element	Structural Grades	Pressure Vessel Grades	High Strength Grades
Carbon (C)	0.05-0.25	0.10-0.25	0.10-0.20
Manganese (Mn)	0.30-1.40	0.55-1.20	0.80-1.60
Phosphorus (P)	≤ 0.035	≤ 0.025	≤ 0.030
Sulfur (S)	≤ 0.035	≤ 0.025	≤ 0.030
Silicon (Si)	0.15-0.40	0.13-0.33	0.15-0.50
Copper (Cu)	≤ 0.35	≤ 0.35	≤ 0.35

3. Mechanical Properties Range

Property	Structural Grades	Pressure Vessel Grades	High Strength Grades
Yield Strength (MPa)	235-355	205-260	345-450
Tensile Strength (MPa)	360-550	380-485	450-620
Elongation (%)	20-28	19-25	18-22
Impact Energy (J)	27-40	18-27	20-30
Hardness (HB)	120-180	150-200	160-220

4. Physical Properties

Property	Typical Value	Test Standard
Density	7.85 g/cm³	ASTM E1266
Modulus of Elasticity	200-210 GPa	ASTM E111
Poisson's Ratio	0.28-0.30	-
Thermal Expansion Coefficient	11.5-12.5 × 10⁻⁶/°C	ASTM E228
Thermal Conductivity	45-52 W/m·K	ASTM E1225

5. Product Specifications

Parameter	Available Range	Standard Tolerance	Customization Options
Thickness	0.5mm - 300mm	±0.1-1.5mm	0.3mm - 400mm
Width	1000mm - 4000mm	±5-20mm	600mm - 5000mm
Length	2000mm - 18000mm	+20mm/-0mm	1000mm - 25000mm
Weight per Plate	Up to 30 tons	±3%	Custom weights available
Surface Finish	As rolled, shot blasted, pickled, primed	-	Various finishes

6. Manufacturing Capabilities

Production Processes:

Hot rolling with TMCP (Thermo-Mechanical Control Process)
Normalizing
Quenching and Tempering
Stress Relieving
Precision Leveling

Quality Control:

100% Ultrasonic Testing
Automated Dimension Verification
Real-time Process Monitoring
Statistical Process Control

7. Surface Treatment Options

Treatment Type	Application Method	Thickness/Finish	Standards
Shot Blasting	Mechanical blasting	Sa 2.5-3.0	ISO 8501-1
Priming	Spray coating	15-25μm	ASTM D2200
Pickling	Chemical treatment	Clean surface	ASTM A380
Oiling	Roller coating	Light protective film	-

8. Testing & Certification

Comprehensive Testing Services:

Chemical Analysis (Spectrometer, OES)
Mechanical Testing (Tensile, Impact, Hardness)
Non-Destructive Testing (UT, MT, PT)
Metallographic Examination
Dimensional Inspection

Certification Provided:

EN 10204 3.1/3.2 Certificate
ABS, DNV, LR, BV Certification
PED 2014/68/EU Compliance
ISO 9001 Quality Management
Third-party Inspection Reports

9. Applications & Industries Served

Key Industry Applications:

Construction & Infrastructure: High-rise buildings, bridges, stadiums
Pressure Vessel & Boiler: Storage tanks, heat exchangers, reactors
Shipbuilding & Marine: Hull structures, decks, bulkheads
Heavy Equipment: Mining machinery, construction equipment
Energy Sector: Wind towers, hydroelectric projects
Transportation: Railway cars, truck trailers

Value-Added Services:

Precision Cutting (Plasma, Laser, Waterjet)
Forming and Bending
Welding and Fabrication
Heat Treatment
Just-in-Time Delivery

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration

◉ PRODUCTION AND WAREHOUSING

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