进步
Q235B square and rectangular tube with pre-galvanized coating for frames, 架子, solar supports and fencing.
Pre-galvanized square and rectangular steel tube is formed from galvanized strip and welded into a closed section, then cut to length. The zinc coating covers the whole surface including corners, and the clean, bright finish makes it ready for use or painting without further treatment — ideal for racks, frames and structural sections.
主要优势
化学成分 (Q235B底座)
| 元素 | C | 锰 | 和 | 磷 | S | 铁 |
|---|---|---|---|---|---|---|
| 内容 % | 0.12 – 0.20 | 0.30 – 0.70 | ≤ 0.30 | ≤ 0.045 | ≤ 0.045 | 平衡 |
机械性能
- 屈服强度: ≥ 235 兆帕
- 抗拉强度: 370 – 500 兆帕
- 伸长 (d): ≥ 26 %
- 镀锌层: 20 – 40 μm (Z60 – Z120)
- 密度: 7.85 g/cm³
标准尺寸
| 范围 | 范围 |
|---|---|
| Square section | 20×20 – 200×200 毫米 |
| Rectangular section | 20×30 – 150×200 mm |
| 壁厚 | 0.8 – 8.0 毫米 |
| 长度 | 6 米标准, cut to order |
| 标准 | 国标/T 6728 / 在 10219 / ASTM A500 / 贺G3466 |
应用领域
Pre-galvanized square and rectangular tube is used for storage racks and display frames, solar panel mounting structures, 温室框架, guardrail posts and fencing, 家具框架, garage and gate structures, tent and awning frames, and light structural sections. For round profiles see our hot-dip galvanized round tube.
加工 & 包装
切割, 钻孔, punching and bending available. Tubes are bundled with steel straps and packed in wooden crates or on pallets with corner protection.
