Customization: | Available |
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Structure: | Four-Post Angle Tower |
Shape: | Angle |
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Radio Masts and Towers (Telecommunication Towers) are typically tall structures designed to support antennas for telecommunicationsand broadcasting, including television.
There are two main types: guyed and self-supporting structures. They are among the tallest human-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them.
In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna.
Monopole
Design | ||
1. Design Code | YD/T5131-2005, ANSI/TIA-222-G | |
Structure Steel | ||
2. Grade | Mild Steel | High Tensile Steel |
GB/T 700:Q235B, Q235C,Q235D | GB/T1591:Q345B, Q345C,Q3455D | |
ASTM A36 | ASTM A572 Gr50 | |
EN10025: S235JR, S235J0,S235J2 | EN10025: S355JR, S355J0,S355J2 | |
3. Design Wind Speed | Up to 250 km/h | |
4. Allowable deflection | 0.5 ~1.0 degree @ operational speed | |
5. Tension strength (Mpa) | 360~510 | 470~630 |
6. Yield strength (t≤16mm) (Mpa) | 355 | 235 |
7. Elongation (%) | 20 | 24 |
8. Impact strength KV (J) | 27(20°C)---Q235B(S235JR) | 27(20°C)---Q345B(S355JR) |
27(0°C)---Q235C(S235J0) | 27(0°C)---Q345C(S355J0) | |
27(-20°C)---Q235D(S235J2) | 27(-20°C)---Q345D(S355J2) |
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 |