MEGATRO provide design and fabrication of 24.9KV distribution bus steel supports for our overseas clients.
24.9KV distribution bus steel supports was made of angle steel, square pipe, channel steel or others. Our 24.9KV distribution bus steel supports has features as follow:
Custom designed to meet your dimensional requirements
Certified drawings & calculation package provided
Galvanized to ASTM A123
Design codes and specifications:
Industry: NESC, IEEE standard 605, and ASCE Manual 113
Wind: Per 2009 IBC & ASCE/SEI7-05
Seismic: Per 2006 IBC section 1613, ASCE 7-05 section 15.1.3 &12.8
Welding: ANSI/AWS D1.1-06
In material, we adopt high strength steel such as ASTM A572 GR50, GR65, Q420, Q460, S355J0, S355J0, Fe510, ST52 or other equivalent steel to meet project requirements. MEGATRO can optimize design and make 24.9KV distribution bus steel supports by solid, high strength, proper span distance, good wind resistance material, and economy in the use of materials.
After fabrication all 24.9KV distribution bus steel supports, are delivered to the galvanizing facility to be Hot DIP Galvanized. 24.9KV distribution bus steel supports is processed through the facility by Caustic Cleaning, Pickling, and then Fluxing. These strict procedures insure years of maintenance free structures.


Fabrication: Conform to clients' drawings and technical requirements
Place of Origin: Qingdao, Shandong, China.
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients' requirements
Package: Both party discusses and agreed before delivery
Terms of Payment: L/C; T/T
Minimum Order Quantity: 1 set
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs.


APPLICABLE STANDARD AND CODES

All towers and substation steel structure manufactured and design shall be generally in accordance with latest revision of the following standards except where specifically directed otherwise.
General
IEC 60826  - Design criteria of overhead lines
IEC 60652  - Loading tests on overhead line structures
ISO 1459   - Metallic coatings - Protection against corrosion by Hot Dip Galvanizing
ISO 1461   - Hot dip galvanized coatings on fabricated iron and steel articles
ISO 12944  - Paint coatings, corrosion protection, and structural steelwork
ISO 898-1   - Mechanical properties of fasteners. Part 1-Bolts, Screws and studs
ISO 630    - Structural Steels - plates, wide flats, bars, sections and profiles
ISO 657    - Hot rolled structural steel plates tolerances on dimensions and shape
ISO 7411  - Hexagon Bolts for high strength structural bolting with large width across flats
ISO 657-5   - Hot rolled Structural Steel Sections equal and unequal leg angles
ISO 7452   - Hot rolled structural steel plates tolerances on dimensions and shape
BS EN 50341-1 -Overhead electrical lines exceeding AC 45kV -General Requirements
BS 8004    - Code of Practice for Foundations
BS 8110    - Structural use of concrete
ANSI10-97   - Design of latticed steel transmission structures
IEC 60050 (151)                         International Electro-technical Vocabulary
                                       Part 51 Electrical and Magnetic Devices
IEC 60050 (601)                      Chapter 601: Generation, transmission and distribution of electricity-General
IEC 60050 (601)                    Chapter 601: Generation, transmission and distribution of electricity-Operation
IEC 60059                              IEC standard current ratings
Chinese Standard

American Standards:

DIN VDE 0101                       -  Isokeraunic Level
VDE 0201                              - Climatic and environmental   conditions
CVDE 0210                           -  Minimum safety factors under    simultaneous working loads
ISO R898 Mechanical Properties of Fasteners
BS EN ISO 1461:1991 - High dip galvanized coatings on fabricated iron and steel articles. Specifications and standards
A) BS 5950: Welding Terms And Symbols
B) BS 729: Hot - Dip Galvanised Coating On Iron And Steel Articles
C) BS 2901: Filler Rods And Wires For Gas Shielded Arc Welding: Part 1 Ferritic Steels
D) BS 3692: ISO Metric Precision Hexagon Bolts, Screws And Nuts
E) BS 4360: Weldable Structural Steel
F ) BS 5135: Metal - Arc Welding Of Carbon And Carbon Manganese Steel
G) BS 5950: Part 1: Code Of Practice For Loading Latticed Tower & Masts
Part 2: Guide To The Background And Use Of Part 1"Code OF Practice For Loading"
Part 3: Strength Assessment of Members
H) DD 133 (1986): Code Of Practice For Loading Latticed Tower & Masts
I) BS 4592 (1987): Part 2: Specification For Expanded Metal Grating Panels
J) BS 4592 (1977): Code Of Practice For Protective Coating Of Iron And Steel Structure Against Corrosion
K) BS 4190: Bracing & Flanged Bolts
L) BS 4190: Rolled Steel sections, Flats & Plates
 
Moreover, we also can design tower foundation according to below standard:
BS 8004  - Code of Practice for Foundations
BS 8110  - Structural use of concrete
BS 4449  - Carbon steel bars for the reinforcement of concrete
If any special requirement, we can design and discuss with client.