H Section Product
H Beam Catenary Pole – OCS Pole for Railway
Hot-Dip Galvanized H beam Catenary Poles for Electrified Railway OCS.
H-Beam Catenary Poles For High-Speed Railway
AGICO supplies railway fasteners and related steel structures for railway bridges and railway lines; one popular product is the H-beam pole for railway electrification overhead contact systems. As the name implies, this OCS pole is a specialized steel H-section member primarily used as a catenary support pole in the railway line. It is an alternative to reinforced concrete catenary poles and is manufactured using CNC 3D automatic drilling production lines and welding equipment.
Hot-rolled H Beams for catenary Pole Fabrication
| Product Category | Grade | Steel Grade Standard | Specifications Applied (mm) | Product Features and Uses |
|---|---|---|---|---|
| Hot-Rolled H Beam | Q235B | GB/T 700 | 200×200, 240×240, 260×260, 280×280 300×300, 270×248, 290×268, 310×288 | This product has high requirements for surface quality and dimensional tolerance. It is mainly used for manufacturing electrified railway overhead line masts. |
| Q355B/C/D | GB/T 1591 | |||
| Q235B, Q355B | GB/T 34199 |
H-Beam Catenary Pole Details
The catenary poles are usually supplied in 3 forms: square and tubular steel pipe poles, lattice poles, and H-beam poles. The H-beam-form catenary poles are fabricated according to the following details：
- Steel Grade (Type): Q235B/D or customized according to customer requirements.
- Standards: GB/T 700 Carbon Structural Steel, DIN 1025-2 Dimensions and shapes of hot-rolled I-sections / H-sections, EN 10034 Tolerances on dimensions and shape of structural I and H sections
Applications: Various H-beam catenary poles are widely applied in electrified railway soft cross-span systems, bridge-mounted catenary steel poles, and brackets.
H-Beam Catenary Pole Models for Sale
| Model | Sectional Dimensions h×b h × b (mm) | Web Thickness t1 t 1 (mm) | Flange Thickness t2 t 2 (mm) | Fillet Radius r r (mm) | Theoretical Weight (kg/m) | Design Bending Moment Mk M k (kN·m) | Section Modulus Wx W x (cm³) | Remarks |
|---|---|---|---|---|---|---|---|---|
| GH240A-8 | 240 × 240 | 10 | 17 | 21 | 83.2 | ~120 | 938 | Standard strength |
| GH260A-8 | 260 × 260 | 10 | 17.5 | 24 | 93 | ~150 | 1150 | Standard strength |
| GH280A-8 | 280 × 280 | 10.5 | 18 | 24 | 103 | ~200 | 1380 | Standard strength; as requested |
| GH300C-8 | 300 × 300 | 11 | 19 | 27 | 117 | ~240 | 1680 | High-strength Grade C |
| GHT240B-11 | 270 × 248 | 18 | 32 | 21 | 157 | — | — | Reinforced type (DIN 1025-4) |
Railway catenary poles are important components supporting the contact wires. Depending on their functions and applications, they are available in multiple models. Common models and specifications of H-beam catenary poles supplied from AGICO include GH240A, GHT240A, GHT240B, GH260A, GH280A, GH280B, and GH300B. We can supply embedded plates for catenary poles and high-strength structural bolts and nuts to you as well.
GH280A-8 Catenary Pole:
- GH represents standard hot-rolled H steel;
- 280 means a section height of 280 mm;
- A refers to the flange type;
- 8 indicates a pole height of 8 m.
Extended series: GHT (special section), GHD (single H), and GHS (double H) series, covering full height ranges from 7.7 m to 10 m.
If you need customized fabrication of H-beam catenary pole, send drawings and specifications now!
Typical Specifications of H-beam Catenary Pole
After several years of development, the H-beam type catenary pole product has formed a series of mature models with the following features:
- Common Height: H-beam Catenary pole has 4 standard heights: 7.7 m, 8.5 m, 9 m, and 10 m, covering mainstream bridge height requirements.
- Weight: Single catenary pole weight ranges from 0.8–1.5 t (for example, 0.83 t for a 7.7 m pole on the Jibin High-Speed Railway and 1.46 t for an 8.5 m pole on the Changjiu High-Speed Railway), facilitating road transport and on-site lifting.
- Grounding Foundation Details: The bottom flange of the catenary pole must be reliably welded to the foundation grounding grid. The integrated grounding system requires grounding resistance of ≤10 Ω, which must be re-tested before the rainy season.
H-Beam Catenary Pole Structure
High-quality Steel: H-beam catenary poles from AGICO are manufactured using high-quality national-standard materials from major steel mills such as Angang and Tangsteel, and are fully welded and hot-dip galvanized as a whole member. Our catenary poles can provide a service life of up to 30 years.
H-Beam Catenary Pole Structure
The OCS system consists of foundations and catenary poles/OCS poles, support devices, and contact suspension systems. Its main function is to transmit electrical power from traction substations to trains. Its quality and operating condition directly affect railway transportation capacity. The catenary poles are designed with a dual-wire structure, featuring messenger-wire fixation and contact-wire power supply. Elastic droppers provide millimeter-level adjustment, while automatic tension compensation devices respond to temperature changes to ensure a stable power supply.
| Component | Function | Typical Configuration |
|---|---|---|
| Pole Shaft (Hot-Rolled H-Section Steel) | Bending resistance, main tensile load bearing | Section height: 280–400 mm |
| Flange Plate | Foundation connection | 2 or 4 pieces, matched to foundation according to bolt hole spacing |
| Crossarm Base / Bracket | Crossarm support | Adjustable plates to suit different slopes |
| Grounding Terminal | Safety grounding | Reliably connected to foundation grounding grid, resistance ≤ 10 Ω |
| Ladder (Optional) | Maintenance access | External ladder to reduce high-altitude operation risk |
| Anti-Corrosion Coating | Extended service life | Hot-dip galvanizing, zinc coating thickness ≥ 86 μm |
Compared with reinforced concrete poles, H-beam OCS poles are lighter in weight, higher in strength, longer in lifespan, safer, aesthetically pleasing, recyclable, and environmentally friendly. For construction contractors, they also reduce labor intensity, improve installation speed, shorten project duration, and enhance efficiency.
Why Use H-Beam for Catenary Poles?
Catenary poles, or OSC poles, are supplied in many different forms around the world. The use of H-beam steel as electrified railway catenary poles is an inevitable trend in the future development of China’s railways; it is suitable for large-span applications such as cantilever, transition, and anchor poles in straight-track sections. They have the following advantages when used in railway OCS systems for high-speed railways, passenger-dedicated lines, and urban rail transit main lines.
Compared with steel tubular poles with the same weight, H-beam poles have a large section moment of inertia with bending and torsional rigidity, providing stronger bending resistance and lower processing costs.
Factory prefabrication and on-site integral lifting make erection more than 30% faster than lattice steel poles. Particularly on viaduct sections, it can significantly reduce track possession time.
The hot-dip galvanized anti-corrosion coating can last more than 30 years, requiring almost no repainting during later stages, with maintenance costs much lower than ordinary steel tubular poles.
H-beam poles are proven to be stable in high-wind regions with wind speeds ≥35 m/s, cold regions with frozen soil depths ≥1.2 m, and coastal soft-soil areas with bearing capacities ≤80 kPa.
H-beam Catenary Pole Installation Procedure
The installation process of H-beam catenary pole shall be completed in the following steps:
1. Foundation re-inspection
2. Crane positioning
3. Steel Catenary Pole Lifting
4. Alignment with anchor bolts
5. Leveling and alignment
6. Nut Tightening
7. Secondary inspection
8. Grounding connection
Notes for H-beam Catenary Pole Delivery and Maintenance
- Corrosion Protection Notes: Avoid damaging the zinc coating during transportation and lifting. Once scratched, zinc-rich primer and topcoat must be immediately applied. Exposed steel surfaces are strictly prohibited.
- Grounding Specifications: During maintenance work, reliable grounding must be achieved through dedicated grounding terminals. Temporary grounding using the pole body itself is strictly prohibited to prevent arc damage.
