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HOT ROLLED ROUND BAR Q235
Application of Q235 hot rolled round bar
Building steel structure
Scenario: factory trusses, stair handrails, support columns
Advantages: Strength meets standards and costs are controllable, accounting for more than 35% of the total steel used in construction.
General mechanical parts
Examples: bolts, washers, shaft blanks
Processing suggestions: The oxide layer (black skin) needs to be removed before turning. When the surface accuracy requirements are high, you can choose to turn the round bar.
Agricultural equipment manufacturing
Application: tractor bracket, granary structure
Demand: atmospheric corrosion resistance, suitable for rural outdoor environment.
Power and communication towers
Feature adaptation: Q235D grade (-20℃ impact toughness) is used for iron towers in low-temperature areas in the north.
Furniture and decoration engineering
Innovative design: through spray painting or galvanizing, it can be made into industrial-style shelves and booth frames.
Temporary facility construction
Flexibility: Quickly welded into scaffolding and construction fences, which can be disassembled and re-used.
Q235 hot-rolled round bar procurement and processing guide
1. Key parameters for selection
Diameter range: Φ10mm-Φ300mm (common specifications Φ20mm-Φ80mm).
Grade selection: Q235A: general environment (indoor structure). Q235C/D: low temperature or dynamic load scenario (-20℃ impact test).
2. Processing precautions
| Process | Key points |
|---|---|
| Welding | Use J422 welding rod, no preheating required (thickness ≤ 20mm) |
| Cold bending | Minimum bending radius ≥ 2 times the diameter (to avoid surface cracking) |
| Surface treatment | Sandblasting to remove oxide scale → galvanizing/painting (outdoor rust prevention) → fine grinding (precision parts) |
Competitive Advantages of Our Q235 Round Bars
1. Precision Manufacturing
Diameter Range: 10 mm to 300 mm
Length: 3–12 meters (custom cuts available)
Tolerance: ±0.5 mm (meets ISO 286-2 standard)
2. Supply Chain Efficiency
Delivery: 15–30 days
Certifications: ISO 9001, SGS, Mill Test Reports
3. Cost-Saving Solutions
Bulk Discounts: off for 100+ MT orders
Logistics Support: Containerized or bulk shipping
Q235 hot-rolled round bars continue to lead the general structural steel market with the three core values of "economical and practical, flexible processing, and stable supply".
Whether it is traditional infrastructure, machinery manufacturing, or emerging new energy projects, choosing Q235 round bars means finding the best balance between cost and performance.
Contact certified suppliers now to get real-time quotes and customized services to speed up and increase efficiency for your project!
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Quotation Questions ◢
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Q.
Can Q235 round bars replace Q345?
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Does rust on the surface of Q235 round bars affect its use?
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How to identify the authenticity of Q235 round bars?