Hebei Changtong Steel Structure Co., Ltd.
Hebei Changtong Steel Structure Co., Ltd. 20 years of communication tower design and production experience Provide comprehensive professional consulting services Has served countless communication
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Lattice Steel Tower
Galvanised Steel Lattice Telecom Antenna Surveillance Camera Pull Rope Wind Tower Guyed Wire Mast Tower
1. Using seamless steel tube as tower material, the wind load coefficient is small and the wind resistance is strong.
2. The tower column is connected by outer flange, and the bolt is tensioned, which is not easy to be damaged and reduces the maintenance cost.
3. The tower column is arranged in triangle shape to save steel.
4. Small root opening, small floor area, saving land resources and convenient site selection.
5. The weight of the tower body is light, and the new type of trefoil cutting board foundation can reduce the foundation cost.
6. Truss structure design, convenient transportation and installation, short construction period.
7. The tower type is designed according to the wind load curve, with smooth lines. It is not easy to collapse in case of rare wind disaster, reducing casualties of people and animals.
8. The design conforms to the national steel structure design code and tower and mast design specification, and the structure is safe and reliable
| Design | ||
| 1. Design Code | TIA/EIA-222-G/F | |
| 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) | |
| Bolts & Nuts | ||
| 9. Grade | Grade 4.8, 6.8, 8.8 | |
| 10. Standards for mechanical properties | ||
| 10.1 Bolts | ISO 898-1 | |
| 10.2 Nuts | ISO 898-2 | |
| 10.3 Washers | ISO 6507-1 | |
| 11. Standards for Dimensions | ||
| 11.1 Bolts | DIN7990, DIN931, DIN933 | |
| 11.2 Nuts | ISO4032, ISO4034 | |
| 11.3 Washers | DIN7989, DIN127B, ISO7091 | |
| Welding | ||
| 12. Method | CO2 Shielded Arc Welding & Submerged Arc Welding(SAW) | |
| 13. Standard | AWS D1.1 | |
| Marking | ||
| 14. Method of marking of the members | Hydraulic Press Stamping | |
| Galvanizing | ||
| 15. Galvanization standard of steel sections | ISO 1461 or ASTM A123 | |
| 16. Galvanization standard of bolts and nuts | ISO 1461 or ASTM A153 | |
| Test | ||
| 17. Factory test | Tensile test,Elements analysis, Sharpy test(impact test), Cold Bending, Preece test,Hammer test | |
| Capacity | ||
| 18. Maximum Production Capacity | 50,000 TON per annum | |
Lattice Tower
Hebei Chang Tong Steel Structure Co., Ltd.
located in the hometown of China Tower, is a modern big-scale
professional company fabricating triangular communicationtower,
four-corner communication tower, cable tower, single-tube tower,
camouflage communication tower and transmission line
tower.integrating design,fabrication and marketing,annual
production capacity reaches more than 30,000 tons.
Company always adhere to the business strategy of "survive
by quality, develop by credit, increase efficiency by science and
technology", continuously carry out technical transformation,
complete production equipment, reliable production process,
adopt advanced CNC angle steel production line, CNC sheet
production line and various supporting equipment. The
equipment has a first-class iron tower stakeout center, all of
which implement microcomputer lofting, which guarantees the
processing quality and provides a strong guarantee for
production, which can fully meet the design and production
requirements of various types of towers and substation
structures.
Our steel tower products have won good reputation from our
customers,including China tower,China mobile,China
unicom,China telecom,State grid and so on.In addition,our
products also were exported to many countries and
areas,including South American,Africa,Southeast Asia and
Ireland