400KV Double Vertical configuration Door type transmission tower
400KV Double Vertical configuration Door type transmission tower is
one special shape structure for our overseas clients. They are
consisted by two vertical phase configuration tower and look like
letter door shape, and belong to single circuit suspension tower to
carry one circuit 400KV conductor. Now our USA can design this type
for our overseas clients by PLS & TOWER software. For time being
our MEGATRO focus mainly international market and had export many
kind of transmission structures to overseas clients. Since 2004,
MEGATRO has been manufacturing lattice transmission tower & tapered
steel poles for lighting, traffic control, communication and
utility applications. MEGATRO pioneered the development of
transmission tower, telecom tower, substation, and other steel
structure and was also at the forefront in the design of
Transmission tower. 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 & angular & 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
had professional QA &QC team to control quality and execute
strict QC & QC plan as per client requirements. MEGATRO is one of
the few manufactures who assemble a face of 400KV overhead
transmission line steel tower. After fabrication all 400KV overhead
transmission line steel tower 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 Tower
legs: 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 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
NoCodeDESCRIPTION1GB/T2694-2003Power Transmission line Steel tower
- Technical requirements for manufacturing2JGJ81-2002Technical
specification for welding for steel structure of bu
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