Megatro 110KV OHL STEEL TOWER
110KV OHL steel tower refer to a lattice steel structure used in overhead electric power transmission and distribution to transmit 110KV circuit electrical energy along large distances. It consists of one or more conductor (most often three or four) suspended by towers or utility poles. Since most of the insulations is provided by air, overhead power lines are generally the lowest-cost method of power transmission for large quantities of electric energy.
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 110KV 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 110KV 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. The duplex coating applied in our own paint shop.
Duplex surface treatment involves sand-blasting to remove 5-10 microns of the 70-150 micron thick hot dip galvanization coating. This removes any contaminants and roughens the surface. Almost immediately afterwards, in a controlled atmospheric environment, water-based painting, specially developed and manufactured for this purpose, is applied to the tower (structures) to a thickness of 80-120 microns.
Design:
Our main design engineer from USA, can use PLS software to design every type steel tower beased on structural calculations and geometrical frame drawings.
To meet the expectation, we produce shop drawings, components list and full production documentation, and even complete 3D models that facilitate the elimination of all design and drawings errors generated on the drawings. Another advantage is our 3D design and loading & design report, and can optimized the design and save cost for our clients.
MEGATRO's 110KV overhead transmission line steel tower systems can accommodate a variety of cross-arm. MEGATRO also offers a wide variety of accessories and mounts.
Fabrication standard (Chinese 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/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
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