进步
Q235B round steel tube hot-dip galvanized for scaffolding, 击剑, greenhouse and structural applications.
Hot-dip galvanized round steel tube is manufactured from Q235B welded pipe and zinc-coated in a hot-dip bath. The thick zinc layer (typically 45–85 μm) protects both the outer surface and the pipe bore, giving decades of service in outdoor and humid environments. It is the preferred tube for scaffolding, railings and structural supports.
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: 45 – 85 μm (≥ 275 克/平方米)
- 密度: 7.85 g/cm³
标准尺寸
| 范围 | 范围 |
|---|---|
| 外径 | 21.3 – 219.1 毫米 (1/2″ – 8″) |
| 壁厚 | 1.0 – 6.0 毫米 |
| 长度 | 6 米标准, cut to order |
| Zinc layer | 45 – 85 μm (Z275 or higher) |
| 标准 | 国标/T 3091 / 在 10255 / ASTM A53 / 国际标准化组织 1461 |
应用领域
Hot-dip galvanized round tube is used for scaffolding and shoring, highway and balcony railings, 温室框架, agricultural and livestock fencing, water supply and sprinkler lines, cable conduit, flagpoles, playground equipment and general structural supports. For square and rectangular profiles see our pre-galvanized square & rectangular tube.
加工 & 包装
切割, 线程, drilling and bending available. Tubes are bundled with steel straps, capped and packed in wooden crates or pallets.
发送OD, 壁厚, 长度, zinc layer and quantity — we confirm price within 24 小时.
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