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  • Carbon Angle Steel

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Carbon Angle Steel
High Strength Durability: Robust construction ensures long-term structural integrity
Easy Fabrication: Excellent weldability and machinability for custom applications
Versatile Applications: Suitable for multiple industrial and construction uses
Cost-Effective: Competitive pricing without compromising quality
Corrosion Resistance: Multiple surface treatment options available
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


Standard Specifications


Model

Leg Length (mm)

Thickness (mm)

Theoretical Weight (kg/m)

Surface Area (m²/m)

L20×3

20×20

3.0

0.89

0.078

L25×3

25×25

3.0

1.12

0.098

L30×3

30×30

3.0

1.36

0.117

L40×4

40×40

4.0

2.42

0.157

L50×5

50×50

5.0

3.77

0.197

L63×6

63×63

6.0

5.72

0.248

L75×8

75×75

8.0

9.03

0.295

L100×10

100×100

10.0

15.10

0.393


Material Grades


  • Q235B: General purpose structural steel

  • Q345B: High-strength low-alloy steel

  • SS400: Japanese standard structural steel

  • ASTM A36: American standard carbon steel

  • S235JR: European non-alloy structural steel


Mechanical Properties


Material Grade

Yield Strength (MPa)

Tensile Strength (MPa)

Elongation (%)

Impact Test Temperature

Q235B

≥235

375-500

≥26

+20°C

Q345B

≥345

470-630

≥21

+20°C

SS400

≥245

400-510

≥17

-

ASTM A36

≥250

400-550

≥20

-

S235JR

≥235

360-510

≥26

+20°C


Dimensional Tolerances


Angle Dimension Tolerances

  • Leg Length Tolerance: ±1.5mm (length ≤56mm), ±2.0mm (length >56mm)

  • Thickness Tolerance: ±0.3mm (thickness ≤4mm), ±0.4mm (thickness >4mm)

  • Straightness: ≤0.3% of total length

  • Squareness: ≤1.0mm per 100mm leg length


Standard Lengths

  • Regular Lengths: 6m, 9m, 12m

  • Custom Lengths: Up to 18m available

  • Length Tolerance: +50mm/-0mm (standard), ±10mm (precision cut)


Surface Treatment Options


Protective Coatings

  • Self-color (Black): Natural hot-rolled finish

  • Galvanized: Hot-dip galvanizing, zinc coating 60-80μm

  • Painted: Primer and finish coat, total thickness 40-60μm

  • Powder Coated: Epoxy-polyester coating, thickness 60-80μm

  • Phosphated: Surface preparation for painting


Surface Quality Standards

  • Class A: No visible surface defects

  • Class B: Minor surface imperfections allowed

  • Class C: Standard commercial quality


Technical Properties


Section Properties

Model

Moment of Inertia (cm⁴)

Section Modulus (cm³)

Radius of Gyration (cm)

Centroid Distance (cm)

L50×5

7.84 (Ix), 7.84 (Iy)

1.53 (Wx), 1.53 (Wy)

0.98 (ix), 0.98 (iy)

1.42

L63×6

16.42 (Ix), 16.42 (Iy)

2.45 (Wx), 2.45 (Wy)

1.24 (ix), 1.24 (iy)

1.78

L75×8

34.86 (Ix), 34.86 (Iy)

3.89 (Wx), 3.89 (Wy)

1.51 (ix), 1.51 (iy)

2.12

L100×10

98.43 (Ix), 98.43 (Iy)

7.80 (Wx), 7.80 (Wy)

1.96 (ix), 1.96 (iy)

2.82


◉ Surfcae selection

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