进步
Q235 / Q345 welded round tube with thick zinc coating, engineered for fence, scaffold, green house and structural framing where corrosion resistance matters.
Hot-dipped galvanized round pipe is a welded carbon steel tube coated with zinc after fabrication (post-galvanized), providing sacrificial corrosion protection for outdoor and underground use. QIDAMT supplies a full range of ERW GI round pipe in BS EN / ASTM standard.
主要优势
化学成分 (Base Steel Q235B)
| 元素 | C | 和 | 锰 | 磷 | S |
|---|---|---|---|---|---|
| 内容 % | ≤ 0.20 | ≤ 0.35 | 0.30 – 0.70 | ≤ 0.045 | ≤ 0.045 |
机械性能
- 抗拉强度 (σb): 375 – 460 兆帕
- 屈服强度 (σs): ≥ 235 兆帕 (for thickness ≤ 16 毫米)
- 伸长 (δ5): ≥ 26 %
- 镀锌层重量: 30 – 275 克/平方米 (double side, nominal)
标准尺寸
| 范围 | 范围 |
|---|---|
| 外径 | 21.3 – 219 毫米 (1/2″ – 8″ NB) |
| 壁厚 | 1.8 – 6.0 毫米 |
| 长度 | 5.8 米 / 6 米 / 12 米 (切成一定长度) |
| Ends | Plain ends, beveled or threaded on request |
| 标准 | BS EN 10255 / ASTM A53 / 国标/T 3091 |
应用领域
GI round pipe is widely used in fencing, 脚手架, greenhouse frames, green house tubing, 扶手, curtain wall supports, drainage and irrigation. For hollow section framing see our galvanized square tube; for structural hot rolled pipe see 20# 无缝管.
加工 & 包装
切割, threading, slotting and painting available. Pipes are bundled with steel strips and protected by end caps on wooden pallets for ocean shipment.
Send OD, WT, length and quantity — we confirm price and stock within 24 小时.
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