Qingdao Megatro Mechanical and Electrical Equipment Co., Ltd. |
230KV double circuit transmission line steel tower is widely used
in oversea market, especially in Indian, Africa and other countries
market. Since 2008, we had design and supply every type of 230KV
lattice steel transmission tower for our oversea clients.
A double-circuit transmission line has two circuits. For
three-phase systems, each tower supports and insulates six
conductors. In HVDC systems typically two conductors are carried
per line, but rarely only one pole of the system is carried on a
set of towers. Both tubular and lattice steel towers can be
designed so as to support two circuits of electrical current.
Double-circuit towers hold the different conductors stacked atop
one another, while in single-circuit towers the conductors are
lined up horizontally.
MEGATRO can optimized design and make tower less weight, high
strength, proper span distance, good wind resistance, and economy
in the use of materials. MEGATRO is equipped with sophisticated
machinery and equipment for the manufacture of 230KV double circuit
transmission line steel tower, and offers a variety of designs to
meet client specific. Lattices of triangular cross-section are most
common, and square lattices are also widely used. After fabrication
all 230KV double circuit 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.
Other information
Place of Origin: Qingdao, Shandong, China.
Availability size: Based on the customer's requirements
Material: Chinese material or as per clients requirement
Fabrication: Based on the customer's drawings and technical
requirements
Package: Both parties discuss and agreed before delivery
Terms of Payment: L/C, T/T
Minimum Order Quantity: 1ton
Port of Loading: Qingdao Port
Delivery Time: One month or based on the customer's needs
Performance Standard
Besides conform to the drawing and design, the materials and
fabrication of tower components shall conform to the Chinese
Standard or other standard which clients can accept.
Besides conform to the drawing and design, the materials and
fabrication of tower components shall conform to the following
standards (Chinese Standard or other standard):
1. GB/T2694-2003 Transmission line 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/T8220-1995: 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