Q235B equilateral Angle steel national standard building structure

Production technology

• Hot rolling forming: through the high temperature rolling process, the production of equal-edge or non-equal-edge Angle steel, the surface of the oxide skin, suitable for high-strength structural parts.
• Cold forming: Bending steel plate into Angle steel at normal temperature, high dimensional accuracy, smooth surface, suitable for lightweight scenarios (such as shelves, decoration).
• Surface treatment: Hot dip galvanizing: enhanced corrosion resistance, used for outdoor projects (such as transmission towers, fences).
• Paint/spray: Provides a variety of appearance, suitable for architectural decoration.
• Cutting and drilling: The length, Angle, and hole position can be customized to meet installation requirements.

Mechanical property

Execute the standard comparison table

Chemical composition (%)

Usage and application scenarios

• Building structure: house truss, bracket, steel structure connector (Q235B/Q345B).
• Bridge engineering: Bridge guardrail, support frame (high strength low alloy steel).
• Machinery manufacturing: equipment base, conveyor guide rail (cold-formed precision Angle steel).
• Power communication: transmission tower, signal tower (hot-dip galvanized Angle steel).
• Decoration project: indoor and outdoor decorative lines, exhibition racks (spray/stainless steel Angle steel).

Technical parameter

Specification range:

• Equal Angle steel: side width 20mm~200mm, thickness 3mm~24mm.
• Unequal Angle steel: side width combination (such as 30×20mm, 50×30mm).
• Length: 6m~12m (customizable cutting).
• Theoretical weight: formula (side width + side width - side thickness)× side thickness ×0.00785× length (m).
• Surface quality: hot rolled oxide, galvanized layer (≥80μm), spray paint thickness (30-60μm).
• Allowable deviation: side width ±1%, thickness ±5%, length ±50mm.

FAQ (Frequently Asked Questions)

Q1: How to connect Angle steel when installing?

A: It can be fixed by welding, bolted or Angle code, the specific method needs to be selected according to the bearing requirements and material.

Q2: What are the main differences between Q235B and Q345B Angle steel?

A: Q345B has higher strength and contains trace alloying elements, which is suitable for heavy load structure; The Q235B has low cost and is suitable for common load-bearing scenarios.

Q3: Corrosion resistance of stainless steel Angle steel and galvanized Angle steel?

A: Stainless steel (such as 304) has better overall corrosion resistance, galvanized Angle steel is suitable for general outdoor environment, and the cost is lower.

Q4: Can I customize special dimensions or special-shaped Angle steel?

A: Support non-standard customization (such as special side width, opening, bending), need to provide drawings and confirm the MOQ.

Q5: How to calculate the theoretical weight of Angle steel?

A: Use the formula (side width + side width-side thickness)× side thickness ×0.00785× length (m), or refer to the standard weight scale.

Q6: Does Angle steel provide quality certification documents?

A: Each batch of products are attached with material certificate (MTC), export products can provide third-party testing reports (such as SGS).

Q7: What are the transportation and packing methods?

A: Conventional packing (rust-proof paper + steel belt), transport can be selected by sea (FCL/bulk), land or rail.

Q8: Does the slight deformation of Angle steel edge affect the use?

A: Hot rolled Angle steel is allowed to bend slightly (according to GB/T 706 standard), if the deformation exceeds the tolerance need to be reworked or replaced.