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Help CenterSteel Angle & Hot Dipped Galvanized Angle Steel，GB/T 706-2016，Q235B，Q355B
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Angle Steel Product Introduction
Angle steel, commonly known as angle iron, is a long hot-rolled section steel with an L-shaped cross-section. It is divided into equal angle steel and unequal angle steel, featuring excellent strength, weldability and structural stability. It is widely used in construction, steel structures, power transmission towers, shelves, machinery manufacturing and other fields.
1. Product Classification
Equal Angle SteelTwo sides are equal in width, marked as: Width × Width × Thickness.
Unequal Angle SteelTwo sides are different in width, marked as: Long Side × Short Side × Thickness.
Surface Treatment
Hot rolled black angle steel
Hot-dip galvanized angle steel
2. Common Sizes
Equal angle steel: 2#–20# (20×20 ~ 200×200 mm)
Unequal angle steel: 32×20 ~ 200×125 mm
Thickness: 3mm–24mm
Standard length: 6m, 9m, 12m, customized length available
3. Execution Standard
GB/T 706-2016 Hot-rolled section steel
4. Materials & Chemical Composition
Q235B
C: ≤0.22%
Si: ≤0.35%
Mn: 0.30–0.70%
P: ≤0.045%
S: ≤0.045%
Q355B (formerly Q345B)
C: ≤0.24%
Si: ≤0.55%
Mn: 1.00–1.60%
P: ≤0.035%
S: ≤0.035%
Nb+V+Ti: 0.02–0.15%
5. Mechanical Properties
Q235B
Yield Strength: ≥235 MPa
Tensile Strength: 370–500 MPa
Elongation: ≥26%
Impact Energy: ≥27J (20℃)
Q355B
Yield Strength: ≥355 MPa
Tensile Strength: 470–630 MPa
Elongation: ≥21%
Impact Energy: ≥34J (20℃)
6. Product Features
Reasonable stress distribution, good rigidity and stable structure
Easy to weld, cut, drill and install
Complete specifications, strong versatility and high cost performance
Galvanized products have excellent anti-corrosion performance, suitable for outdoor and humid environments
7. Applications
Building steel structures, workshops, supports and curtain wall keels
Power transmission towers, communication towers and cable trays
Storage shelves, platforms, guardrails and fences
Machinery manufacturing, shipbuilding, vehicles and equipment frames
Municipal engineering, billboards and road guardrails
8. Delivery Information
Delivery condition: Hot rolled black / Hot-dip galvanized
Length: 6m / 9m / 12m or customized
Packing: Bundled packing, suitable for ocean transportation
Delivery time: 5–7 days for regular stock
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