Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure

Product Details
Customization: Available
Usage: Flying Angle Tower, Crossing Tower, Tension Tower, Angle Tower, Terminal Tower, Transposition Tower, Branching Tower
Conductor Circuit: Multi Circuit
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  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
  • Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
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Basic Info.

Model NO.
MONO 468
Materials
Steel
Standard
Standard
Style
Independence Tower
Structure
F Type
Finish Treatment
Hot Galvanized
Material
Steel Grade 50
Height
Depending on Customer Requirement
Voltage
10-1000kv
Galvanizing Standard
En ISO 1461,ASTM/A123
Transport Package
Pallet
Specification
customised
Origin
China
HS Code
73082000

Packaging & Delivery

Package Size
110.00cm * 110.00cm * 230.00cm
Package Gross Weight
100.000kg

Product Description


Lattice structure tower
A lattice tower is a steel structure used on transmission and distribution overhead lines. The main purpose of these structures is the transport of the energy from the production plants to the consumption areas.
These structures are mainly manufactured in L profiles, but there are also some solutions in CHS profiles or other profiles like for example U/H profiles. The connections are mostly bolted connections, but there may also be welded connections.
The design and material types of a lattice tower are linked to the transferred load from cables to the structure and the operation voltage. The line voltage can be from 15kV up to 420kV and the loads are designed taking in consideration the span, angle line, type of cable and climate conditions of the location. There are several tower configurations, but the most common are alignment, angle, reinforcement, and dead end.

Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
A lattice tower is a freestanding framework tower. They can be used as a radio tower (a self-radiating tower or as a carrier for aerials) or as an observation tower. 3 Legged Tubular Steel Tower is a self-supporting high-rise steel structure. Main features: 3 Legged Tubular Steel Tower is made of steel pipe, and the body has a triangular cross section.
 
Features:
  • The steel pipe is used as the column material, the wind load coefficient is small, and the wind resistance is strong.
  • The tower column is connected by an outer flange,
  • The tower is arranged in a triangular shape to save steel.
  • The roots are small, the land resources are saved, and the site selection is convenient.
  • The tower body is light in weight,
  • Truss structure design, convenient transportation and installation, and short construction period.

The materials and fabrication of our Transmission Structures comply with welding standards and user requirements.
 Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
Steel Pipe/Angle/Hybrid Tower Welding Requirements
 
1 ) We used CO2 welding and submerged arc auto welding or other methods.
2 ) Welded seam shall be full penetration and grinded.
3 ) The welded product has no fissure, scar, overlap, layer or other defects.
 
Our products are highly resistant to heat, moisture, humidity, and water.
And special processes are adopted in its production process to ensure its high precision, good quality and competitive advantage. We can accept product type damage testing to ensure the high safety factor of our products.
 
Height According to customer needs
Voltage Class 10-1000kV
Tower Type Self-suspension
Structure Overlap Connection, bolt connection,
Material Q345B/A572, minimum yield strength >=345MPA;
Q235B/A36, minimum yield strength>=235MPA
Or according to the standards provided by the customer
Details & Shape Can be designed as per customer's requirement
Earthquake resistance Grade 8
Ice wrapping 5-10 mm
Verticality 1 / 1000
Barks Hot Dip Galvanization or Painted
Delivery Time According to customer requirements
Galvanizing Standard EN ISO 1461,ASTM/A123 or equivalent
Suitable temperature - 45°C -+ 45°C
Service life 50Years
Manufacturing and Workmanship BS449 or AISC or equivalent
Welding Standard AWS D1.1, AS554, AS 4100 standard or equivalent
Nuts& Bolts Grade 8.8
Spare parts Provide additional tower and bolt spare parts according to order value
 
Transmission Structures can be produced according to buyer's requirements; the specification can also be adjusted according to buyer's requirements by our engineers. In addition the antenna stand and platform can be installed in any position as buyer's request. The quantity of them is also fluctuant due to different clients.
Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure

Transporting materials to the tower sites and site preparation

The materials for construction needed for each tower are brought to site and distributed along the right-of-way where the towers will be built. Smaller poles are placed between the towers to support the transmission cables.

After completing site surveys, flagging and placing a call to BC One Call, the crews carefully remove the topsoil, and any necessary tree removal and brushing. Access roads are built so construction vehicles and equipment can travel to the site.

Building the foundations and anchors

Different types of foundations may be used to support the towers, depending on the soil type, depth of bedrock, and structure type. Excavation may be done with a mechanical excavator, hydrovac, auger, or hand digging.

Aws D 1.1 Welding HDG Overhead Power Transmission Line Tower Structure
Assembling the towers

Towers are generally built from the ground up. Line workers assemble the towers on the ground near the tower location - much like a giant, complicated 3D puzzle. This includes the use of heavy machinery. In areas that have soft ground composition, access mats (sometimes called rig mats) may be used to provide passage over the sensitive ground. Access mats provide structural support for equipment by dispersing weight and providing a solid base.

Raising the towers and poles

Tower sections are either assembled all in one piece, or in multiple pieces that are connected after they are raised. Telescopic cranes or helicopters are used to raise the tower sections from the ground, and bolt them together to complete assembly.

Poles are used to support cables between transmission towers and to maintain the tension of the cable. Framing and hardwire installation will be completed before the poles are installed, then lifted and set into place.


 
Our company accepts producing with supplied drawings and also can design drawings for you as your request.
 

 

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