138kv switch structure

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138kv switch structure
Posting date : Feb 25, 2014
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85-
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MEGATRO provide 138KV switch structures, which are used to switch generators, equipment, and circuits or lines in and out of a system, and including Gantries and Equipment Support Structures. Gantry structures are mainly used for guiding the power conductor from last tower near substation to the electrical equipments in a substation. This structure consists of a number of columns, angle steel bar and Girder beams, which depend on number of circuits of the line. Gantries are also used for line crossing. Power conductors of one line can be under-passed with the help of required number of gantries. Equipment Support Structures are columns, supporting electric equipments in a substation. Depending upon the site and client's requirement, the Gantry and Equipment support structures can be mounted on substation building also. MEGATRO manufacture them with complicated technology and adopted sophisticated production line. Fabrication: Conform to client drawings and technical requirements Place of Origin: Qingdao, Shandong, China. Availability size: Based on the customer's requirements. Material: Chinese material or as per clients requirements Package: Both party discuss and agreed before delivery Terms of Payment: L/C; T/T Minimum Order Quantity: 10tons Port of Loading: Qingdao Port Lead 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 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 We also adopt British, American and other international standard which client can accept.

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