ความคืบหน้า
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.
Key Advantages
องค์ประกอบทางเคมี (Base Steel Q235B)
| องค์ประกอบ | ค | และ | มน | ป | ส |
|---|---|---|---|---|---|
| เนื้อหา % | ≤ 0.20 | ≤ 0.35 | 0.30 - 0.70 | ≤ 0.045 | ≤ 0.045 |
คุณสมบัติทางกล
- Tensile strength (σb): 375 - 460 MPa
- Yield strength (σs): ≥ 235 MPa (for thickness ≤ 16 มม)
- การยืดตัว (δ5): ≥ 26 %
- Zinc coating weight: 30 - 275 g/m² (double side, nominal)
Standard Sizes
| Parameter | Range |
|---|---|
| Outside diameter | 21.3 - 219 มม (1/2″ – 8″ NB) |
| Wall thickness | 1.8 - 6.0 มม |
| ความยาว | 5.8 m / 6 m / 12 m (cut to length) |
| Ends | Plain ends, beveled or threaded on request |
| มาตรฐาน | วิทยาศาสตรบัณฑิต 10255 / ASTM A53 / กิกะไบต์/ที 3091 |
การใช้งาน
GI round pipe is widely used in fencing, scaffolding, greenhouse frames, green house tubing, handrails, curtain wall supports, drainage and irrigation. For hollow section framing see our galvanized square tube; for structural hot rolled pipe see 20# seamless pipe.
Processing & Packaging
Cutting, 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 hours.
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