220-66-35KV transmission tower

35KV, 66KV&220KV transmission and distribution line steel tubular tower
In power transmission & distribution line project, sometimes one tower can carry different power voltage for city grid project. Then this tower can have multi function for power transmission and distribution project. This photo refers to our 35KV, 66KV and 220KV transmission and distribution line project. 66KV and 35KV are double circuit distribution lines, and 220KV as single circuit transmission line. Among them, the 220KV conductor refers to twin bundle conductor and at top of tower as OPGW.

These tower legs are steel pipes and bracing consisted of angle steel. MEGATRO is equipped with sophisticated machinery and equipment for the manufacture of 35KV, 66KV&220KV transmission and distribution line steel tubular tower, we have skilled worker with certificated welders, and offers design for our clients. In material we often adopt mild steel (ASTM A36, Q235B, ST37, BS40B), high strength and lower alloy (ASTM A572 GR50, GR65, Q345B, Q345C, Q420, Q460, S355J0, S355JR , ST52, BS50 and equivalent materials).
MEGATRO can optimized design and make transmission tower less weight, high strength, proper span distance, good wind resistance, and economy in the use of materials. Our main design engineer from USA, can use PLS/TOWER software to design every type steel tower based 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.
After fabrication all transmission & distribution steel towers, 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
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 ton
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.