400kv Double Vertical Configuration Door Type Transmission Tower1

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