19 27 35M Heavy Duty Galvanized 3 Legged Tubular Steel Tower
Telecom Mast for Outdoor 5G 4G Microwave Communication and
Monitoring

We specialize in designing and manufacturing customized steel
towers for telecom, monitoring, observation, and security
applications. Below is the detailed product information:
1.key Details:
Place of Origin: Hebei, China (Mainland) ; Brand Name: Jaoyao or
OEM ; Model Number: Telecom Tower
Surface treatment: Hot Dip Galvanizied or painted.
2.Packaging & Delivery:
Packaging Details: Telecom tower will be bundled by Galvanized
strapping as per client's requirements.
Deliver:Shipped in 20 days after payment from Tianjin port
Tower members: One steel tower is separated into several bundles.
Bolts: Packing material is robust nylon bag or steel drum.
3. Technical Data
| Design |
| 1. Design Code | ANSI/TIA-222-G/H/F, EN 1991-1-4 & EN 1993-3-1 |
| Structure Steel |
| 2. Grade | Mild Steel | High Tensile Steel |
| GB/T 700:Q235B, Q235C,Q235D | GB/T1591:Q345B, Q345C,Q3455D |
| ASTM A36 | ASTM A572 Gr50 |
| EN10025: S235JR, S235J0,S235J2 | EN10025: S355JR, S355J0,S355J2 |
| 3. Design Wind Speed | Up to 250 km/h |
| 4. Allowable deflection | 0.5 ~1.0 degree @ operational speed |
| 5. Tension strength (Mpa) | 360~510 | 470~630 |
| 6. Yield strength (t≤16mm) (Mpa) | 355 | 235 |
| 7. Elongation (%) | 20 | 24 |
| 8. Impact strength KV (J) | 27(20°C)---Q235B(S235JR) | 27(20°C)---Q345B(S355JR) |
| 27(0°C)---Q235C(S235J0) | 27(0°C)---Q345C(S355J0) |
| 27(-20°C)---Q235D(S235J2) | 27(-20°C)---Q345D(S355J2) |
| Bolts & Nuts |
| 9. Grade | Grade 4.8, 6.8, 8.8 |
| 10. Standards for mechanical properties |
| 10.1 Bolts | ISO 898-1 |
| 10.2 Nuts | ISO 898-2 |
| 10.3 Washers | ISO 6507-1 |
| 11. Standards for Dimensions |
| 11.1 Bolts | DIN7990, DIN931, DIN933 |
| 11.2 Nuts | ISO4032, ISO4034 |
| 11.3 Washers | DIN7989, DIN127B, ISO7091 |
| Welding |
| 12. Method | CO2 Shielded Arc Welding & Submerged Arc Welding(SAW) |
| 13. Standard | AWS D1.1 |
| Marking |
| 14. Method of marking of the members | Hydraulic Press Stamping |
| Galvanizing |
| 15. Galvanization standard of steel sections | ISO 1461 or ASTM A123 |
| 16. Galvanization standard of bolts and nuts | ISO 1461 or ASTM A153 |
| Test |
| 17. Factory test | Tensile test,Elements analysis, Sharpy test(impact test), Cold
Bending, Preece test,Hammer test |
|
| Capacity |
| 18. Maximum Production Capacity | 50,000 TON per annum |
What is the lattcie structure of 3 legged tubular steel tower?
The lattice structure of a 3-legged tubular steel tower is a
truss-like framework that connects the tower’s three vertical
tubular legs. Composed of smaller hollow steel tubes (consistent
with the main leg material, e.g., seamless/welded steel tubes),
these lattice members form crisscross horizontal and diagonal
connections between the three legs, creating a triangular web-like
pattern throughout the tower’s height. This structure works in
tandem with the tower’s tapered design (wider at the base, narrower
at the top) to distribute vertical loads (tower weight, equipment
weight) and lateral forces (wind, seismic activity) evenly across
the three legs. The tubular lattice not only enhances structural
rigidity and stability but also optimizes aerodynamic
performance—reducing wind drag by 30% compared to traditional
angular steel lattice structures—making the tower highly adaptable
to harsh or windy environments. Additionally, the use of tubular
members ensures the structure is lightweight while maintaining high
load-bearing capacity.

How to mount the MW dish on the 3 legged tubular steel tower?
Mounting a microwave (MW) dish on a 3-legged tubular steel tower
follows a safe, standardized process aligned with the tower’s
structural design and industry standards:
- Pre-installation Verification: Confirm the tower’s load-bearing capacity (per TIA-222-G and GB
50017 standards) to ensure it can support the MW dish, mounting
hardware, and associated loads. Inspect the tower’s pre-installed
antenna brackets (integrated accessories) for structural integrity.
- Bracket Preparation: Use the tower’s dedicated antenna brackets (or custom-fabricated
brackets compatible with the tubular lattice) and secure them to
the tower’s main legs or lattice trusses using Grade 8.8
high-strength bolts (ISO 898). Ensure brackets are aligned with the
intended point-to-point communication path and tightened to
specified torque.
- Dish Lifting and Positioning: Employ cranes or specialized lifting equipment to hoist the MW
dish to the target height (typically near the upper sections of the
tower or on a maintenance platform). Adjust the dish’s azimuth and
elevation to align with the receiving/transmitting endpoint, using
laser alignment tools for precision.
- Secure Fastening: Attach the MW dish to the mounted brackets using compatible
hardware, ensuring a tight, wobble-free connection. Recheck bolt
torque with calibrated tools to comply with AWS D1.1 welding and
fastening standards.
- Cable Routing: Route the dish’s signal and power cables through the tower’s
integrated cable management systems (or along protected paths on
the lattice structure) to avoid exposure to environmental damage.
Ensure cables are properly insulated and waterproofed at connection
points.
- Final Inspection: Conduct a visual check of the dish, brackets, and connections to
confirm stability. Test signal transmission to verify alignment and
functionality. Adhere to safety protocols (e.g., fall protection
for workers) throughout the installation.

Main structure of 3 legged tubular steel tower?
The main structure of a 3-legged tubular steel tower is a
self-supporting, triangular-framed system designed for stability,
load-bearing, and aerodynamic efficiency, consisting of three core
components:
- Three Vertical Tubular Legs: The primary load-bearing elements, made of seamless or welded
steel tubes (complying with Q345B/ASTM A500 standards). Arranged in
a triangular configuration, these legs transfer the tower’s total
weight (including equipment and environmental loads) to the
foundation.
- Tubular Lattice Trusses: Smaller hollow steel tubes that connect the three main legs
horizontally and diagonally. This crisscross truss system
distributes loads evenly, enhances structural rigidity, and reduces
wind resistance, forming the tower’s characteristic lattice
pattern.
- Tapered Frame & Flange Connections: The tower narrows gradually from the base to the top (wider base,
narrower top) to optimize resistance against strong winds (up to
200km/h) and earthquakes. Tower segments are joined via
high-tensile bolted flanges, ensuring secure assembly and lowering
maintenance risks.
These components form the structural backbone, with integrated
accessories (e.g., platforms, ladders) adding functional support
without compromising the main structure’s integrity.

Platform, ladder
A. Platform
- Purpose: Serves as a stable elevated workspace for installing,
maintaining, or inspecting MW dishes, antennas, sensors, or other
equipment. It also provides a safe resting point for workers during
tower access.
- Design Features: Fabricated from galvanized steel (per ASTM A123 for corrosion
resistance) and integrated into the lattice structure at specified
heights. Equipped with safety railings to prevent falls and
non-slip surfaces for worker stability. Engineered to support the
weight of workers, tools, and equipment, aligning with the tower’s
overall load-bearing capacity. May include access hatches for easy
movement between tower sections.
- Key Advantage: Positioned strategically near equipment mounting points to
streamline maintenance tasks, enhancing operational efficiency.
B. Ladder
- Purpose: A dedicated safety access system that allows workers to climb the
tower to reach platforms, equipment, or upper sections for
installation, inspection, or repairs.
- Design Features: Constructed from galvanized steel for durability and corrosion
resistance, with evenly spaced rungs (per industry safety
standards) for comfortable climbing. Equipped with anti-fall
mechanisms (e.g., cable guides for safety harnesses) to minimize
fall risks—consistent with the tower’s "anti-fall ladder" design
specification. Attached vertically to the main legs or lattice
trusses, ensuring a secure, stable path.
- Compliance: Designed in line with safety regulations and tower design
standards (e.g., TIA-222-G, GB 50017), prioritizing worker
protection during vertical access.
Together, the platform and ladder enhance the tower’s usability by
enabling safe, efficient access to high-altitude equipment,
supporting ongoing operation and maintenance while adhering to
industry safety and durability requirements.

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Customized product types & advantage
Self Supporting Tower
Self supporting tower usually is 3leg of 4leg tower, and its
material is steel pipe or angle steel. As for the connection,
tubular tower is connected by flange, and angle steel tower is
connected by nuts and bolts.
Features:
1.Small coefficient of wind load, strong wind resistance.
2.Save land resource, convenient location.
Convenient transportation and installation.

Pipe Steel Tower
The tube tower refers to a self-supporting high-rise steel
structure with a tower column made of steel pipes and a tower body
section in a triangular shape. Its main characteristics are that
the three tube tower column is made of steel pipes and the tower
body section is in a triangular shape, which is a high-rise steel
structure different from angle steel.

Monopole Tower
Single tube tower also called monopole tower, is a commonly used
type, with beautiful appearance, covering an small area of 9 to 18
square meter, cost - effective , and is adopted by majority of the
construction. Tower body adopt more reasonable section, which is
connected through high strength bolt. It has the characteristics of
easy installation and can adapt to a variety of complicated field
site.

Guyed Tower
Guyed tower has a novel appearance,and its biggest characteristic
is strengthened by using steel guy wire. Guyed tower is a common
type of communication tower which is economical and practical. It
is lighter and cheaper than the others. It is very suitable for the
geographical wide areas.



Guard Tower
The watchtower is a multifunctional building mainly used for
observing the surrounding environment and playing an important role
in multiple fields. Its design emphasizes harmony and unity with
the natural environment, and the architectural style is usually
coordinated with the surrounding environment. Observation towers
are usually composed of tower bodies, platforms, towers, and
ladders, with compact and durable structures.

Camouflaged Tree Tower
Camouflaged Tree Tower is also a kind of cartificial trees of
Bionic tree tower, on base like a real one, plus the meticulous
design, when placed among the real trees in sightseeing area, park
and square, it will be a part of the nature.
Features:
1. Exquisite structure and gorgeous appearance.
2. Strong structural stability and long working life.
3. Small area covering and great economic effect.


Our Services
JIAYAO CO., LTD. is a professional telecom tower manufacturer and
approved by ISO9001. We are committed to providing customers with
the most optimized solutions and the best communication tower. Many
products have been exported to USA, Europe and other 55 different
counties.
We specialize in designing and manufacturer of angle steel tower,
tube steel tower, monopole tower, pine tree tower, guyed tower and
guard tower. Our departments include design, R&D, inspection,
laboratory, QC, galvanization and steel tower departments. Our raw
materials come from famous steel mills in China: HBIS Group, Baowu
Steel Group, Shougang Group.



If you need it, we will welcome you 24 hours a day!