China Megatro Tubular Tower for Power Transmission

An electricity pylon or transmission tower is a tall structure, usually a steel lattice tower, used to support overhead electricity conductors for electric power transmission. They are used in high voltage AC and DC systems as well as railway traction, and come in a wide variety of shapes and sizes.
Transmission Tower structures can be classified by the way in which they support the line conductors. Suspension structures support the conductor vertically using suspension insulators...Strain structures resist net tension in the conductors and the conductors attach to the structure through strain insulators. Dead-end structures support the full weight of the conductor and also all the tension in it, and also use strain insulators.
Where the power transmission line must change direction, then tubular towers are used. Structures are classified as angle suspension, angle strain, and angle dead-end.
MEGATRO fabricates every structure tubular towers by solid steel legs and angle iron cross members & pipes. Structures can reach heights up to 200 meter. MEGATRO is one of the few manufactures who assemble a face of every tower section. This attention to quality may not be the cheapest process but it does insure every tower meets our high standards of quality. And it helps to reduce on-site construction cost due to mismatched assemblies.
After fabrication all tubular towers are delivered to the galvanizing facility to be Hot DIP Galvanized. Towers are processed through the facility by Caustic Cleaning, Pickling, and then Fluxing. These strict procedures insure years of maintenance free towers.
APPLICABLE STANDARD AND CODES
All towers 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 60059IEC standard current ratings
Chinese Standard

NoCodeDEscriptION1GB/T2694-2003Power Transmission line Steel tower - Technical requirements for manufacturing2JGJ81-20023GB9787-884GB709-885GB/T699-19996GB/T1591-19947GB700-888GB222-849GB/T228-200210GB/T232-199911GB/T5117-199512GB/T5118-199513GB/T8110-199514GB/T10045-200115JB/T7949-199916GB50205-200117GB/T470-199718GB3098.1-200019GB3098.2-200020GB3098.3-200021GB/T5780-200022GB/T41-200023GB/T90-200224GB/T13912-2002

American Standards:

StandardDescriptionASTM A6/A6MASTM - 6 ASTM A36/A36-M-97aASTM A123 / A123M-02ASTM A143 / A143M-03ASTM A153/ A153M-05ASTM A - 194 ASTM A239ASTM A242ASTM A307ASTM A370-06ASTM A325ASTM A-325 or A-354 ASTM A325-97ASTM A384 / A384M-02ASTM A394-93ASTMA - 563ASTMA - 572ASTM A572/A572-97c ASTMA - 615 ASTM A673 / A673M-07ASTM B201ASTM E94-93ASTM E 709-95ASCE Manual 72 ASCE 10-97AWS D1.1ANSI B-182-2

DIN VDE 0101 - Isokeraunic Level
VDE 0201- Climatic and environmentalconditions
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.