4-Legged Tubular Steel Communication Tower
Self-supporting towers made of tubular steel profile sections for use as telecommunication towers with heights ranging from 5 to 120 meters
4-legged tubular steel communication towers are self-supporting high-rise structures built with four main steel tube columns arranged in a square layout. This configuration provides strong overall stability and load-bearing capacity, which is why these steel towers are widely used in telecommunication networks that require high signal transmission stability. The four main steel tube columns arranged in a square layout give the tower good stability in tough outdoor conditions and allow different types of equipment to be installed without affecting overall performance.
- Design Standards ANSI/TIA-222-G/H/F, EN 1991-1-4, EN 1993-3-1
- Height Range 5-120m, customizable to project needs
- Design Wind Speed Up to 300 km/h, adjusted according to site conditions
- Surface Treatment Hot-dip galvanized; Painting
- Main Support Legs
The structure uses four seamless steel tubes (or high-frequency welded steel tubes) as the main supporting legs. Flanges and bolts are used to connect the tubular legs, which gives the tower a stable square-shaped support structure. - Secondary Members
The horizontal and diagonal members are made of angle steel or steel pipes. These parts are fixed by gusset plates with welding or bolted connections, creating a truss structure that improves overall stability. - Foundation System
A four-corner base foundation is used, anchored to the ground with foundation bolts. Some designs also use a gravity-ball balancing system to improve how the structure handles compressive loads.
Typical Installation Environments
4-legged tubular steel communication towers are suitable for flat areas, urban outskirts, and mountainous regions with relatively low wind pressure. They also work well in areas with many base stations, where several installations need to be set up within a limited space.
| Product | Telecommunication tower |
| Tower Type | Self-Supporting Tower |
| Design Standards | ANSI/TIA-222-G/H/F, EN 1991-1-4, EN 1993-3-1 |
| Certification | ISO 9001: 2015; COC; Third Party Inspection Report (SGS, BV) |
| Bolts & Fasteners | Grades 8.8 / 6.8 / 4.8; A325; DIN 7990, DIN 931, DIN 933; ISO 4032, ISO 4034 |
| Main Material | Tube steel |
| Height Range | 5-120m, customizable to project needs |
| Design Wind Speed | Up to 300 km/h, adjusted according to site conditions |
| Surface Treatment | Hot-dip galvanized; Painting |
| Galvanizing Standard | ASTM A123 / ISO 1461 |
| Expected Service Life | More than 20 years |
| Color Options | Silver (galvanized) or painted finish (RAL color system), customizable |
| Seismic Resistance | Up to 8° seismic intensity |
| Operating Temperature Range | −35°C to 45°C |
| Working & Rest Platforms | 1–3 pcs |
| Antenna Brackets | 3–18 pcs |
| Microwave Dish Brackets | 3–18 pcs |
| Main Features | Clean tubular appearance, hot-dip galvanized surface for outdoor protection, cost-effective configuration, and reliable build quality |
| Certification Standard | ||
| Design Standards |
| |
| Structural Steel | ||
| Grade | Mild Steel | High Tensile Steel |
| GB/T 700 – Q235B, Q235C, Q235D | GB/T 1591 – Q355B, Q355C, Q355D, Q420B | |
| ASTM A36 | ASTM A572 Gr.50 | |
| EN 10025 – S235JR, S235J0, S235J2 | EN 10025 – S355JR, S355J0, S355J2 | |
| Design Wind Speed | Up to 300 km/h | |
| Allowable deflection | 0.5–1.0° @ operational speed | |
| Tensile strength (MPa) | 360–510 | 470–630 |
| Yield strength (t ≤ 16 mm) (MPa) | 235 | 355 / 420 |
| Elongation (%) | 20 | 24 |
| Impact strength KV (J) | 27 (20°C) - Q235B (S235JR) | 27 (20°C) - Q355B (S355JR) |
| 27 (0°C) - Q235C (S235J0) | 27 (0°C) - Q355C (S355J0) | |
| 27 (-20°C) - Q235D (S235J2) | 27 (-20°C) - Q355D (S355J2) | |
| Bolts & Nuts | ||
| Grade | Grade 4.8, 6.8, 8.8 | |
| Standards for mechanical properties | ||
| Bolts | ISO 898-1 | |
| Nuts | ISO 898-2 | |
| Washers | ISO 7089 / DIN 125 / DIN 9021 | |
| Standards for dimensions | ||
| Bolts (dimensions) | DIN 7990, DIN 931, DIN 933 | |
| Nuts (dimensions) | ISO 4032, ISO 4034 | |
| Washers (dimensions) | DIN 7989, DIN 127B, ISO 7091 | |
| Welding | ||
| Method | CO₂ Shielded Arc Welding & Submerged Arc Welding (SAW) | |
| Standard | AWS D1.1 | |
| Galvanizing | ||
| Galvanization standard of steel sections | ISO 1461 or ASTM A123/A123M | |
| Galvanization standard of bolts and nuts | ISO 1461 or ASTM A153/A153M | |
Main Components
- Anchor Bolts
- Antenna Mounting Bracket
- Copper Grounding Components
- Connection Plates
- Antenna Mast
Optional Components
- Communication Tower Bolts
- Aviation Obstruction Light
- Climbing Ladder
- Copper Lightning Rod
- Grating Platform and Mesh Platform
We provide full technical guidance and carry out construction based on the approved drawings. If any questions arise, we are always available to assist.
The four tubular legs share the load at four support points, which helps keep the structure well balanced. The round steel tubes at the base help the tower deal better with wind, while the flange or bolted joints keep all the connections firm and properly aligned over time.
Compared with traditional lattice towers, the four-leg tubular structure stays more stable under real working loads and resists bending much better in daily operation. The four-point foundation spreads the load more evenly across the ground, adapts well to different soil conditions, and provides strong resistance against overturning in tall, heavy-duty structures.
4-legged tubular towers can be installed as a whole unit or in sections, which speeds up construction and reduces on-site requirements. Their compact structure also takes up less ground space, helping keep land use and site costs lower.
4-legged tubular towers can carry equipment from multiple network operators at the same time. Several signals can run through the same tower at the same time, which helps improve network efficiency and eases congestion for smoother, more reliable communication.
- 40m 4-Legged Tubular Steel Tower
- 45m 4-Legged Tubular Steel Tower
- 30m 4-Legged Tubular Steel Tower
Laser Cutting
Laser cutting is used to shape the steel components through focused beam cutting and assisted gas removal. The process offers fast cutting speed and high dimensional accuracy (up to ±0.05 mm), while keeping heat impact to a minimum. This reduces the risk of deformation and results in clean, well-defined edges.
CNC Punching and Shearing
Steel angles are processed through CNC-controlled punching and shearing lines. Automatic feeding, positioning, punching, and cutting are all integrated into the process, keeping production running smoothly and efficiently. Precise CNC positioning keeps quality consistent, even when working with more complex parts.
Hot-Dip Galvanizing and Surface Protection
The tower is protected with hot-dip galvanizing as the main anti-corrosion treatment, along with an extra plastic coating for added protection. The zinc layer protects the steel from rust and adds strength, while the coating gives extra insulation and surface protection. This combined treatment allows the tower to maintain reliable performance for over 20 years and adapt well to harsh environments such as high and low temperatures, coastal areas, and mountainous regions.