Qingdao Megatro Mechanical and Electrical Equipment Co., Ltd. |
Product Description
230KV SUSPENSION STEEL TOWER
In an electric power transmission line, a suspension tower is where
the conductors are simply suspended from the tower, the mechanical
tension being the same on each side. In this case, the tower is
supposed to carry a downward force, and a lateral force, but not a
longitudinal force.
These may have, for each conductor, an insulator string hanging
down from the tower, or two strings making a "V" shape. In either
case, sometimes several insulator strings are used in parallel to
give higher mechanical strength. These are used where a
transmission line continues in a straight line, or turns through a
small angle. In other cases, a tension tower (C or D Towers) is
used.
MEGATRO supplied too many 230KV suspension tower to overseas
clients, which including many types, such as self-supporting or
guyed type. MEGATRO had professional QA &QC team to control
quality and execute strict QC & QC plan as per client
requirements and fit client design or other technical data. MEGATRO
is one of the few manufactures who assemble a face of 230KV
overhead transmission line steel tower. 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 230KV overhead suspension 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.
MEGATRO's 230KV overhead suspension tower systems can accommodate a
variety of cross-arm. MEGATRO also offers a wide variety of
accessories and mounts.
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
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/T8230-1995: 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