Download the Latest Angle Steel Bar Specifications and Dimensions.
GB Q195 Q235B Q355B Q420 20×20 -100x100mm Structural Carbon Steel Angle Bar
Product Detail
| Type | Equal, Unequal | Invoicing | By Theoretical Weight |
| Standard | GB | Application | Metal structures, bridges, building structures |
| Grade | Q195-Q420 | Brand Name | Royal |
| Tolerance | ±1% | Place of Origin | Tianjin, China |
| Processing Service | Bending, Welding, Punching, Decoiling, Cutting | Surface treatment | Black coating, Galvanization |
| Delivery Time | 7 - 15 days | Thickness | 2 – 16 mm |
| Alloy Or Not | Non-Alloy | Length | 6m / 9m / 12m, or custom-made according to customer requirements |
Product Advantages
1. High Strength & Excellent Stability
Angle bars provide strong structural support and resistance against bending, making them suitable for load-bearing applications.
2. Easy Fabrication
With excellent weldability and machinability, angle steel can be easily cut, drilled, welded, and assembled.
3. Corrosion Resistance Options
Available with hot-dip galvanizing or coating treatments for improved durability in outdoor and corrosive environments.
4. Cost-Effective Structural Solution
Angle bars offer efficient material usage and reliable performance for various construction projects.
GB Angle Steel Bar Chemical Composition
| Grade | C (%) ≤ | Si (%) ≤ | Mn (%) | S (%) ≤ | P (%) ≤ |
| Q195 | 0.12 | 0.3 | ≤0.50 | 0.04 | 0.035 |
| Q235B | 0.17–0.24 | 0.35 | 0.35–0.70 | 0.045 | 0.045 |
| Q355B | 0.2 | 0.55 | 1.00–1.60 | 0.035 | 0.035 |
| Q420 | 0.2 | 0.55 | 1.00–1.70 | 0.03 | 0.03 |
GB Angle Steel Bar Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) ≥ |
| Q195 | ≥195 | 315–430 | 33 |
| Q235B | ≥235 | 375–500 | 26 |
| Q355B | ≥355 | 470–630 | 22 |
| Q420 | ≥420 | 520–680 | 19 |
GB Angle Steel Bar Size
GB equal angle steel specification
GB unequal angle steel specification
GB equal angle steel specification
| Size (mm) | Thickness (mm) | Weight (kg/m) | Size (mm) | Thickness (mm) | Weight (kg/m) |
| 20×20 | 3 | 0.889 | 60×60 | 5 | 4.576 |
| 20×20 | 4 | 1.145 | 60×60 | 6 | 5.427 |
| 25×25 | 3 | 1.124 | 63×63 | 6 | 5.721 |
| 25×25 | 4 | 1.459 | 70×70 | 6 | 6.406 |
| 30×30 | 3 | 1.373 | 70×70 | 7 | 7.398 |
| 30×30 | 4 | 1.786 | 75×75 | 7 | 7.976 |
| 30×30 | 5 | 2.176 | 75×75 | 8 | 9.03 |
| 40×40 | 3 | 1.852 | 80×80 | 8 | 9.658 |
| 40×40 | 4 | 2.422 | 80×80 | 10 | 11.874 |
| 40×40 | 5 | 2.976 | 90×90 | 8 | 10.83 |
| 50×50 | 4 | 3.059 | 90×90 | 10 | 13.476 |
| 50×50 | 5 | 3.77 | 100×100 | 8 | 12.276 |
| 50×50 | 6 | 4.465 | 100×100 | 10 | 15.12 |
GB unequal angle steel specification
| Leg 1 (mm) | Leg 2 (mm) | Thickness (mm) | Weight (kg/m) | Leg 1 (mm) | Leg 2 (mm) | Thickness (mm) | Weight (kg/m) |
| 30 | 20 | 3 | 1.14 | 100 | 50 | 6 | 6.98 |
| 30 | 20 | 4 | 1.49 | 100 | 50 | 8 | 9.16 |
| 40 | 20 | 3 | 1.38 | 100 | 50 | 10 | 11.3 |
| 40 | 20 | 3 | 1.8 | 100 | 65 | 7 | 8.96 |
| 40 | 25 | 4 | 1.97 | 100 | 65 | 8 | 10.2 |
| 45 | 30 | 4 | 2.3 | 100 | 65 | 9 | 11.3 |
| 45 | 30 | 5 | 2.82 | 100 | 65 | 10 | 12.5 |
| 50 | 30 | 5 | 3.02 | 100 | 75 | 7 | 9.52 |
| 50 | 30 | 6 | 3.58 | 100 | 75 | 8 | 10.8 |
| 50 | 40 | 4 | 2.77 | 100 | 75 | 9 | 12.1 |
| 50 | 40 | 5 | 3.42 | 100 | 75 | 10 | 13.3 |
| 50 | 40 | 6 | 4.03 | 100 | 75 | 11 | 14.6 |
| 60 | 30 | 5 | 3.43 | 100 | 75 | 12 | 15.8 |
| 60 | 30 | 6 | 4.06 | 120 | 80 | 8 | 12.4 |
| 60 | 30 | 7 | 4.68 | 120 | 80 | 10 | 15.3 |
| 60 | 40 | 5 | 3.83 | 120 | 80 | 12 | 18.2 |
| 60 | 40 | 6 | 4.54 | 130 | 65 | 8 | 12.1 |
| 60 | 40 | 7 | 5.24 | 130 | 65 | 10 | 14.9 |
| 65 | 50 | 5 | 4.43 | 130 | 65 | 12 | 17.7 |
| 65 | 50 | 6 | 5.26 | 130 | 75 | 8 | 12.7 |
| 65 | 50 | 7 | 6.08 | 130 | 75 | 10 | 15.7 |
| 65 | 50 | 8 | 6.88 | 130 | 75 | 12 | 18.6 |
| 75 | 50 | 5 | 4.83 | 130 | 90 | 10 | 17 |
| 75 | 50 | 6 | 5.75 | 130 | 90 | 12 | 20.1 |
| 75 | 50 | 7 | 6.65 | 150 | 75 | 9 | 15.7 |
| 75 | 50 | 8 | 7.53 | 150 | 75 | 10 | 17.4 |
| 75 | 50 | 9 | 8.4 | 150 | 75 | 11 | 18.9 |
| 75 | 55 | 5 | 5.04 | 150 | 75 | 12 | 20.6 |
| 75 | 55 | 7 | 6.93 | 150 | 90 | 10 | 18.6 |
| 75 | 65 | 6 | 6.49 | 150 | 90 | 12 | 22 |
| 75 | 65 | 8 | 8.48 | 150 | 90 | 15 | 27.1 |
| 75 | 65 | 10 | 10.5 | 150 | 100 | 10 | 19.3 |
| 80 | 40 | 6 | 5.51 | 150 | 100 | 12 | 23 |
| 80 | 40 | 8 | 7.21 | 150 | 100 | 14 | 26.6 |
| 80 | 60 | 6 | 6.49 | 160 | 80 | 10 | 18.5 |
| 80 | 60 | 7 | 7.5 | 160 | 80 | 12 | 22 |
| 80 | 60 | 8 | 8.48 | 160 | 80 | 14 | 25.4 |
| 80 | 65 | 6 | 6.73 | 200 | 100 | 10 | 23.4 |
| 80 | 65 | 8 | 8.82 | 200 | 100 | 12 | 27.8 |
| 80 | 65 | 10 | 10.9 | 200 | 100 | 15 | 34.4 |
| 90 | 65 | 6 | 7.22 | 250 | 90 | 10 | 26.6 |
| 90 | 65 | 7 | 8.32 | Material: Length = 6 - 12 meters | |||
| 90 | 65 | 8 | 9.44 | ||||
| 90 | 65 | 10 | 11.7 | ||||
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GB Angle Steel Customized Content
| Category | Options / Description | MOQ |
| Dimension | Custom lengths available | 20 tons |
| Processing | Cutting, drilling, slotting, bevels, mitre cuts, welding prep | 20 tons |
| Surface | Black, painted/epoxy, hot-dip galvanizing | 20 tons |
| Marking & Packaging | Custom labels; bundles with straps, padding, and moisture protection | 20 tons |
Main Application
Steel Structure Construction – Used for building frames, supports, roof trusses, columns, and reinforcement structures.
Industrial Equipment – Applied in machinery frames, equipment supports, brackets, and fabricated components.
Power & Energy Projects – Used for transmission towers, solar mounting systems, and electrical infrastructure.
Transportation Infrastructure – Suitable for bridges, railway structures, vehicle frames, and support systems.
General Fabrication – Commonly used for shelves, frames, connectors, and various steel fabrication projects.
Why Choose Royal Steel Group?
✓ Professional steel supplier with global export experience
✓ Wide range of ASTM, EN, JIS, and GB standard products
✓ Customized sizes and processing services
✓ Stable supply capacity and competitive pricing
✓ Complete quality documents and inspection support
Royal Steel Group — Reliable Angle Steel Solutions for Global Construction and Industrial Projects.
Packaging & Shipping
Packaging: Standard seaworthy steel bundles with steel strips, suitable for ocean transportation.
Delivery: Regular sizes in stock for fast shipment; customized orders within 8–20 days.
Trade Terms: FOB, CIF, CFR, CNF available.
Shipping: By container or bulk vessel, with complete export documents provided.
FAQ
Q1: Are you a manufacturer or supplier of angle bars?
A: We are a professional steel supplier providing angle bars with stable supply capacity, customized production, and global export services.
Q2: What types of angle bars can you supply?
A: We supply equal angle bars and unequal angle bars in various sizes, thicknesses, lengths, and steel grades.
Q3: What steel grades are available?
A: Common materials include ASTM A36, ASTM A572 Gr.50, Q235, Q355, and SS400. Customized grades are available according to project requirements.
Q4: What standards do your angle bars meet?
A: Our products can meet international standards including ASTM, EN, JIS, and GB standards.
Q5: Can you provide customized sizes and processing?
A: Yes. We support customized dimensions, cutting, drilling, welding, galvanizing, and other processing services based on customer drawings.
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