69KV POWER TRANSMISSION LINE DISTRIBUTION POLE
69KV distribution poles are mainly used in city grid project, and widely used in oversea regions. This type utility pole is another type for power transmission line. They are made up of hollow steel poles. These utility poles can be manufactured as one large piece, or as several small pieces which fit together. This type of pole often used in city power transmission grid, with little space, economic and lower cost. Now MEGATRO can produce distribution pole with some type as follow:
(1) Flange connection
(2) Slip joint
(3) Step type
(4) Stagger type
(5) Others
MEGATRO can optimize design, to set a compact, narrow base, the tower design not only advanced but practical, with an emphasis on economic rationality to ensure safe and reliable operation. Today, with over 10 years of experience and our commitment to excellence, MEGATRO remains an industry leader in the manufacture and design of steel tubular & monopole structures for all Highway, Municipal, Custom, telecom, lighting and electric Utility applications. MEGATRO has a complete staff of professional engineering personnel trained in the PLS Pole program and three different manufacturing processes for producing steel towers, poles and other supports. We utilize the latest versions of PLS-CADD, PLS-POLE, TOWER, AutoCAD and other CAD software.
MEGATRO is one of the few manufactures who assemble a face of utility pole. 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. MEGATRO utility poles systems can accommodate a variety of cross-arm and other accessories. After fabrication 69KV utility poles 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. Even we take secondary finish for client again, which as duplex surface treatment.
Other information:
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirement
Package: Both parties discuss before delivery
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs
Minimum order: 1 set
Fabrication standard: Chinese Standard or other standard which client accepted
Steel grades
POLE SHAFT: Chinese steel Q345B, which same to ASTM A572 GR50
Other webs, bracing and not stress plate and angle steel: Chinese Q235B, which same to ASTM A36
Plates: Chinese steel Q345B, which same to ASTM A572 GR50
Bolts: Chinese grade 6.8 and 8.8, which similar to ASTM A394
A) Dimension and tolerance for angle are according to GB/T1591-1994, similar to EN 10056-1/2
B) Hot dip galvanization in accordance with GB/T 13912-2002, which similar to ASTM A 123
C) The welding will be performance in accordance with AWS D1.1 or CWB standard
If any special requirement, we can design and discuss with client.
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 60826Â - Design criteria of overhead lines
IEC 60652Â - Loading tests on overhead line structures
ISO 1459Â Â - Metallic coatings - Protection against corrosion by Hot Dip Galvanizing
ISO 1461Â Â - Hot dip galvanized coatings on fabricated iron and steel articles
ISO 12944Â - Paint coatings, corrosion protection, and structural steelwork
ISO 898-1Â Â - Mechanical properties of fasteners. Part 1-Bolts, Screws and studs
ISO 630Â Â Â - Structural Steels - plates, wide flats, bars, sections and profiles
ISO 657Â Â Â - Hot rolled structural steel plates tolerances on dimensions and shape
ISO 7411Â - Hexagon Bolts for high strength structural bolting with large width across flats
ISO 657-5Â Â - Hot rolled Structural Steel Sections equal and unequal leg angles
ISO 7452Â Â - Hot rolled structural steel plates tolerances on dimensions and shape
BS EN 50341-1 -Overhead electrical lines exceeding AC 45kV -General Requirements
BS 8004Â Â Â - Code of Practice for Foundations
BS 8110Â Â Â - Structural use of concrete
ANSI10-97Â Â - Design of latticed steel transmission structures
IEC 60050 (151)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â International Electro-technical Vocabulary
                                      Part 51 Electrical and Magnetic Devices
IEC 60050 (601)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Chapter 601: Generation, transmission and distribution of electricity-General
IEC 60050 (601)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Chapter 601: Generation, transmission and distribution of electricity-Operation
IEC 60059Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â IEC standard current ratings
Chinese Standard
No
Code
DESCRIPTION
1
GB/T2694-2003
Power Transmission line Steel tower - Technical requirements for manufacturing
2
JGJ81-2002
Technical specification for welding for steel structure of building
3
GB9787-88
Measuring and allowable tolerance for hot-rolled equal angle
4
GB709-88
Measuring and allowable tolerance for hot-rolled plate and strip
5
GB/T699-1999
Quality Carbon Structural Steel
6
GB/T1591-1994
Low alloy high strength structural Steel
7
GB700-88
Carbon Structural Steel
8
GB222-84
Method of sampling steel for determination of chemical composition and permissible variations
9
GB/T228-2002
Method for Tensile testing of metals
10
GB/T232-1999
Method for Bending test of metals
11
GB/T5117-1995
Carbon Welding Rod
12
GB/T5118-1995
Low Alloy Welding Rod
13
GB/T8110-1995
Welding wires for gas shielding arc welding of carbon and low alloy steels
14
GB/T10045-2001
Carbon steel flux cored electrodes for arc welding
15
JB/T7949-1999
Weld outer dimensions for steel construction
16
GB50205-2001
Test Standard for Acceptance of Steel Structure
17
GB/T470-1997
Zinc Ingot
18
GB3098.1-2000
Mechanical properties of fasteners-Part 1:Bolts, screws and studs
19
GB3098.2-2000
Mechanical properties of fasteners-Part2: Nuts, and thread
20
GB3098.3-2000
Mechanical properties of fasteners-Part3: Fastening screw
21
GB/T5780-2000
Helical Bolts Grade C
22
GB/T41-2000
Helical Nuts Grade C
23
GB/T90-2002
Flat Washer Grade C
24
GB/T13912-2002
Metal Coating, Technical Requirement and Test Method for Hot-dip galvanized Metal Parts
American Standards:
Standard
Description
ASTM A6/A6M
Standard specification for general requirements for rolled structural steel bars, plates, and sheet piling.
ASTM - 6Â Â Â
- General Requirements for delivery of Rolled Steel Plates, Shapes, sheet Piling Bars for structural used
ASTM A36/A36-M-97a
Standard specification for Carbon structural steel
ASTM A123 / A123M-02
Standard specification for Zinc (Hot-Dip Galvanized) Coatings on iron and steel products
ASTM A143 / A143M-03
Standard Practise for Safeguarding Against Embitterment of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embitterment
ASTM A153/ A153M-05
Standard specification for zinc coating (Hot-Dip) on iron and steel hardware
ASTM A - 194Â
-Â Â Grade for bolt
ASTM A239
Standard practice for locating the thinnest spot in a zinc (Galvanized) Coating on Iron or Steel Articles
ASTM A242
Standard specification for High-Strength Low-Alloy Structural steel
ASTM A307
Standard Specification for Carbon Steel Bolts and Studs, 60000 PSI Tensile strength
ASTM A370-06
Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A325
Standard Specification for structural bolts, steel, Heat treated 120/105 ksi minimum tensile strength
ASTM A-325 or A-354Â
- Galvanized hexagonal head of connection bolt
ASTM A325-97
Standard Specification for High-strength Bolts for structural steel Joints
ASTM A384 / A384M-02
Standard Practise for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies.
ASTM A394-93
Standard Specification for steel Transmission Tower, Bolts, Zinc Coated and Bare
ASTMA - 563
-Â Â Â Class and size of nuts
ASTMA - 572Â Â
- Chemical composition of steel
ASTM A572/A572-97c
Standard specification for High-Strength Low-Alloy Columbium-Vanadium Structural steel
 ASTMA - 615Â
-Â Â The anchor bolt material
ASTM A673 / A673M-07
Standard Specification for Sampling Procedure for Impact Testing of Structural Steel
ASTM B201
Standard practice for testing Chromatic coating on Zinc and Cadmium surfaces
ASTMÂ E94-93
Standard Guide for Radiographic Testing
ASTM E 709-95
Standard Guide for Magnetic Particle Examination
ASCE Manual 72Â Â Â
-Â Load testing a simple structure
ASCE 10-97
Standard Design of latticed steel transmission structures
AWS D1.1
American Welding Society D1,1/D1,1M structural Welding code- Steel
ANSI B-182-2
Bolts, nuts and washers dimensions
DIN VDE 0101Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -Â 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
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Moreover, we also can design tower foundation according to below standard:
BS 8004Â - Code of Practice for Foundations
BS 8110Â - Structural use of concrete
BS 4449Â - Carbon steel bars for the reinforcement of concrete
If any special requirement, we can design and discuss with client.
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