Usage: | Flying Angle Tower, Crossing Tower, Tension Tower, Angle Tower, Terminal Tower |
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Conductor Circuit: | Double Circuit |
Certification: | ISO |
Transmission line poles and towers
Our transmission tower or telecom tower structure shall be designed according to load combinations given as per IEC 61936-1 and as illustrated below: Normal loads 1 Dead weight load 2 Tension load 3 Erection load 4 wind load Exceptional loads 1 Switching forces 2 short-circuit forces 3 Loss of conductor tension 4 Earthquake forces We design all kinds of towers and posts or other steel structures for: a. Telecoms b. Power transmission c. TV and Radio Broadcast d. Roads and City Development Our complete selection of towers includes: a. Self-supporting b. Monopoles c. Guyed towers d. Custom-designed radar towers e. Broadcast towers f. Power transmission |
Steel Grade
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1. High strength low alloy structural steel: Q420B which is equivalent with ASTM Gr60 | 2.High strength low alloy structural steels: Q355B which is equivalent with ASTM Gr50 or S355JR | 3. Carbon Structural Steel: Q235B which is equivalent with ASTM A36 or S235JR |
General | Chinese Standard | American Standards: |
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 |
GB/T2694-2003 Power Transmission line Steel tower - Technical requirements for manufacturing JGJ81-2002 Technical specification for welding for steel structure of building GB9787-88 Measuring and allowable tolerance for hot-rolled equal angle GB709-88 Measuring and allowable tolerance for hot-rolled plate and strip GB/T699-1999 Quality Carbon Structural Steel GB/T1591-1994 Low alloy high strength structural Steel GB700-88 Carbon Structural Steel GB222-84 Method of sampling steel for determination of chemical composition and permissible variations GB/T228-2002 Method for Tensile testing of metals GB/T232-1999 Method for Bending test of metals GB/T5117-1995 Carbon Welding Rod GB/T5118-1995 Low Alloy Welding Rod GB/T8110-1995 Welding wires for gas shielding arc welding of carbon and low alloy steels GB/T10045-2001 Carbon steel flux cored electrodes for arc welding JB/T7949-1999 Weld outer dimensions for steel construction GB50205-2001 Test Standard for Acceptance of Steel Structure GB/T470-1997 Zinc Ingot GB3098.1-2000 Mechanical properties of fasteners-Part 1:Bolts, screws and studs GB3098.2-2000 Mechanical properties of fasteners-Part2: Nuts, and thread GB3098.3-2000 Mechanical properties of fasteners-Part3: Fastening screw GB/T5780-2000 Helical Bolts Grade C GB/T41-2000 Helical Nuts Grade C GB/T90-2002 Flat Washer Grade C GB/T13912-2002 Metal Coating, Technical Requirement and Test Method for Hot-dip galvanized Metal Parts |
ASTM A394-93 -Specification for steel Transmission Tower, Bolts, Zinc Coated and Bare ASCE 10-97 -Design of latticed steel transmission structures AWS D1.1 -American Welding Society D1,1/D1,1M structural Welding code- Steel ANSI B-182-2 Bolts, nuts and washers dimension ASTM A6/A6M -specification for general requirements for rolled structural steel bars, plates, and sheet piling. ASTM - 6 - General Requirements for delivery of Rolled Steel Plates, Shapes, sheet Piling Bars for structural used ASTM A36/A36-M-97a -specification for Carbon structural steel ASTM A123 / A123M-02 - specification for Zinc (Hot-Dip Galvanized) Coatings on iron and steel products ASTM A143 / A143M-03 -Practise for Safeguarding Against Embitterment of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embitterment ASTM A153/ A153M-05 -specification for zinc coating (Hot-Dip) on iron and steel hardware ASTM A - 194 - Grade for bolt ASTM A239 -practice for locating the thinnest spot in a zinc (Galvanized) Coating on Iron or Steel Articles ASTM A242 -specification for High-Strength Low-Alloy Structural steel ASTM A307 -Specification for Carbon Steel Bolts and Studs, 60000 PSI Tensile strength ASTM A325 -Specification for structural bolts, steel, Heat treated 120/105 ksi minimum tensile strength ASTM A-325 or A-354 - Galvanized hexagonal head of connection bolt ASTM A325-97 -Specification for High-strength Bolts for structural steel Joints ASTM A384 / A384M-02 -Practise for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies. ASTMA - 563 - Class and size of nuts ASTMA - 572 - Chemical composition of steel ASTM A572/A572-97c -specification for High-Strength Low-Alloy Columbium-Vanadium Structural steel ASTMA - 615 - The anchor bolt material ASTM A673 / A673M-07 -Specification for Sampling Procedure for Impact Testing of Structural Steel ASTM B201 -practice for testing Chromatic coating on Zinc and Cadmium surfaces ASCE Manual 72 - Load testing a simple structure |