CSA G40.20/G40.21 Structural Steel Plate | 44W 50A 50AT 70WT
Our structural steel plates comply fully with CSA G40.20/G40.21 production specifications, delivering outstanding mechanical performance including high tensile strength, reliable weldability, superior impact toughness and consistent dimensional accuracy. Our regular stock grades cover 44W, 50A, 50AT and 70WT, perfectly suited for all kinds of load-bearing structural construction works.
Royal Steel Group provides CSA certified steel plates with fully customizable dimensions (thickness, width and length) as well as flexible surface finishing options. We also support third-party testing & inspection, to fully satisfy the technical demands of international engineering projects worldwide.
Superior Structural Strength
Steel plates produced to CSA G40.20/G40.21 standards deliver robust mechanical properties, making them ideal for heavy-duty construction and complex engineering works.
Flexible Welding & Processing Performance
The steel plates work seamlessly with all common fabrication methods, including welding, cutting, bending and precision machining.
Fully Customizable Dimensions
We tailor plate thickness, width, length and surface finishes to match your construction drawings and unique project technical standards.
Rigorous Quality Assurance System
Every batch undergoes thorough testing to guarantee chemical makeup, mechanical performance and precise dimensions align with your project’s technical demands.
| Item | Description |
| Standard | CSA G40.20/G40.21 |
| Product | Structural Steel Plate |
| Common Grades | 44W, 50A, 50AT, 70WT |
| Material | Carbon Steel / High Strength Low Alloy Steel |
| Production Process | Hot Rolled |
| Thickness | Customized |
| Width | Customized |
| Length | Customized |
| Surface | Mill Finish, Shot Blasting, Painted, Galvanized |
| Inspection | MTC, SGS, BV, Third-party Inspection Available |
CSA G40.21 44W Steel Plate
44W is a general-purpose structural steel grade with good strength, weldability, and fabrication performance.
Features:
Excellent weldability
Good formability
Reliable mechanical properties
Cost-effective structural solution
Applications:
Steel building frames
Industrial structures
Warehouse construction
General structural fabrication
Support structures
CSA G40.21 Grade 50A Steel Plate
Grade 50A falls under CSA G40.21 structural steel, engineered to handle heavier loads where greater structural strength is necessary.
Key Advantages
Outperforms grade 44W with boosted yield strength
Maintains reliable welding performance
Well-suited for heavy-duty structural builds
Typical Usage Scenarios
Bridge construction
Heavy steel frame constructions
Equipment & machinery base fabrication
Public infrastructure developments
Large industrial metal fabrication works
CSA G40.21 50AT Steel Plate
Classified under CSA G40.21 standards, 50AT structural steel plate delivers markedly better toughness than conventional structural steel grades, making it the go-to pick for projects that need strong impact resistance.
Core Advantages
Excellent notch toughness
Stable mechanical properties under low-temperature working conditions
Perfect fit for high-demand structural engineering scenarios
Main Application Fields
Transportation infrastructure construction
Construction projects built in frigid zones
Heavy-load industrial steel structures
Mining and energy industry plant construction
CSA G40.21 Grade 70WT Weathering Steel Plate
70WT weathering steel complies with CSA G40.21 specifications. This high-strength alloy forms a self-protective rust patina when exposed to open air, effectively slowing atmospheric corrosion.
Core Benefits
High structural yield strength
Outstanding anti-corrosion performance under outdoor atmospheric conditions
Cuts down routine maintenance costs and cycles
Extends the overall service lifespan of steel components
Primary Application Scenarios
Bridge framing and support structures
Railway stations, tracks and auxiliary steel facilities
All types of outdoor exposed steel constructions
Municipal and civil infrastructure builds
Permanent steel components exposed to open-air environments
Superior Structural Strength
Steel plates produced to CSA G40.20/G40.21 standards deliver robust mechanical properties, making them ideal for heavy-duty construction and complex engineering works.
Flexible Welding & Processing Performance
The steel plates work seamlessly with all common fabrication methods, including welding, cutting, bending and precision machining.
Fully Customizable Dimensions
We tailor plate thickness, width, length and surface finishes to match your construction drawings and unique project technical standards.
Rigorous Quality Assurance System
Every batch undergoes thorough testing to guarantee chemical makeup, mechanical performance and precise dimensions align with your project’s technical demands.
Royal Steel Group provides complete quality documentation:
✔ Mill Test Certificate (MTC)
✔ Chemical Composition Report
✔ Mechanical Test Report
✔ Ultrasonic Testing (UT)
✔ Dimensional Inspection
✔ SGS / BV Third-party Inspection
Export Standard Seaworthy Packing
Steel Plate Bundles with Steel Straps
Protective Covering Available
Suitable for Container or Bulk Vessel Shipment
Customized Marking According to Customer Requirements
Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)
1. What mainstream grades are available for CSA G40.21 steel plates?
We provide four widely used CSA grades to fit varied project demands: weldable general-purpose 44W, high-strength heavy-duty 50A, low-temperature tough 50AT, and weather/corrosion-resistant 70WT.
2. What are the main application scenarios of CSA G40.21 steel plates?
These standard structural steel plates are ideal for building frameworks, highway & bridge infrastructure, industrial plants, mining facilities, oil and gas projects, power generation and heavy equipment fabrication.
3. Can CSA G40.21 steel plates be customized in size and processing?
Full customization is available, including custom thickness, width, length and cutting sizes, personalized surface treatment, plate marking and packaging, with tailored fabrication services per project drawings and specifications.
4. What quality certificates and inspection documents can be provided?
Complete official mill test certificates are supplied, covering chemical composition, mechanical properties and dimensional accuracy reports, with authoritative SGS/BV third-party inspection services available upon request.
5. What’s the difference between CSA 44W and 50A, the two most popular grades?
44W is a cost-effective general grade for ordinary buildings and supporting structures, while 50A boasts higher yield strength and load-bearing capacity, suitable for heavy-load bridges and large-scale steel structure projects.
Contact us with your size, thickness, and quantity requirements.
We will reply within 12 hours with the best price and technical support.
ROYAL GROUP
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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