*Geotechnical *Reinforcing *Post-Tensioning *Formworks *Micro piles *Ground Anchors *Soil Nailing *Tunneling*Mining
Finely-rolled threaded steel bars are widely used in large-scale water conservancy projects
Bridge construction technology took a giant leap forward with the introduction of the post-tension rod system, a pioneering move. This innovative construction method uses high-strength steel to strengthen bridge structures and is expected to improve the durability, efficiency and safety of infrastructure developments.
In recent years, soil nailing has seen an increase in popularity due to advancements in technology. With the use of geotechnical engineering software, engineers can model and simulate the effects of soil nailing in different climates and terrains. This allows for more accurate predictions of the performance of reinforced structures and minimizes the risk of failure during the construction process.
Soil nailing has also been utilized in the transportation industry. In the construction of highways and railways, soil nailing has been used to stabilize slopes and prevent landslides. By reinforcing the soil, soil nailing can make transportation routes safer and more reliable.
Fully threaded steel bars are currently used to anchor and support the dam body form of the dam foundation. In the cable-stayed bridge, fully threaded bars are used as the main ribs and bridge foundations of the main tower. The use of fully threaded steel bars saves steel, reduces component area and reduces component weight.
The continuous external thread is hot rolled. The shape of thread bar is shown as following figure. The main dimension ranges from ⌀15mm-⌀50mm and the grade ranges from 500/630Mpa to 1200/1330Mpa.
|
Nominal Diameter |
Diameter |
H |
B |
L |
Nominal Section |
Nominal Weight |
|
|
Dv |
Dh |
||||||
|
mm |
mm |
mm |
mm |
mm |
mm |
Area(mm2) |
Kg/m |
|
15 |
15 |
15 |
1.0 |
4.5 |
10 |
176 |
1.47 |
|
18 |
18 |
18 |
1.2 |
4.0 |
10 |
254.5 |
2.11 |
|
20 |
20 |
20 |
1.3 |
4.8 |
10 |
314 |
2.47 |
|
25 |
25 |
25 |
1.6 |
6.0 |
12 |
490.9 |
4.10 |
|
32 |
32 |
32 |
2.0 |
7.0 |
16 |
804.2 |
6.65 |
|
36 |
36 |
36 |
2.5 |
8.0 |
18 |
1018 |
8.41 |
|
40 |
40 |
40 |
3.0 |
8.0 |
20 |
1256.6 |
10.34 |
|
50 |
50 |
50 |
3.0 |
9.0 |
24 |
1963.5 |
16.28 |
|
60 |
60 |
60 |
3.0 |
10.0 |
22 |
2827 |
23.36 |
|
63.5 |
63 |
63.5 |
3.0 |
12.0 |
22 |
3167 |
26.20 |
|
65 |
65 |
65 |
3.0 |
12.0 |
22 |
3318 |
27.4 |
|
70 |
70 |
70 |
3.0 |
12.0 |
22 |
3848 |
31.8 |
|
75 |
75 |
75 |
3.0 |
12.0 |
22 |
4418 |
36.9 |
|
Grade 830/1030 |
Norminal Dia. |
Cross Section |
Yield Strength |
Tensile Strength |
Yield Load |
Ultimate Load |
Elongation |
Liner Weight |
|
(mm) |
(Area) |
≥(Mpa) |
≥(Mpa) |
(KN) |
(KN) |
(A/%) |
(kg/m) |
|
|
15 |
177 |
830 |
1030 |
147 |
182 |
6 |
1.47 |
|
|
20 |
314 |
830 |
1030 |
261 |
323 |
6 |
2.47 |
|
|
25 |
491 |
830 |
1030 |
408 |
506 |
6 |
4.1 |
|
|
32 |
804 |
830 |
1030 |
667 |
828 |
6 |
6.65 |
|
|
36 |
1018 |
830 |
1030 |
845 |
1049 |
6 |
8.41 |
|
|
40 |
1257 |
830 |
1030 |
1043 |
1295 |
6 |
10.34 |
Company Introduction
Since the establishment of the company in 2008, Tianjin Cathay Pacific Steel Co.,Ltd has focused on Screw Threaded Steel products and related construction products. The products on the market are: FT Bar, its accessories: nuts, plates, couplers, spiral bars, PC strand wires and anchors, metal and plastic ducts, etc.
Our company always regards product quality as the lifeline of the company, adheres to the rigorous, efficient and innovative concept to serve customers, and we are willing to cooperate with new and old customers at home and abroad to provide customers with better quality service and quality products.
The Projects We Participated in:
1. Hongkong- Zhuhai-Macao Bridge
2. Mongolian Shangri-la Hotel
3. The Uzbek Railway Engineering
4. Cambodia San Secondary Hydropower Station
5. Brunei PMB Cross- Sea Bridge
6. Malaysia DASH CB4 Expressway Project
7. Papua New Guinea Hilton Hotel
8. Bangladesh Airport Projects
Application: Bridge, Tunneling, Mining, Soil Nailing, Slope Stabilizing,
Contact Information:
Wendy Lee
Tianjin Cathay Pacific Steel Co.,Ltd
Email: tjgtqc@tjgtqc.com
Mobile/WhatsApp/WeChat :+86-176 1227 5091
Add: B10-1-2, Kexin Industrial Area, Beichen District, Tianjin, China
| Nominal Diameter | Diameter | H | B | L | Nominal Section | Nominal Weight | |
| Dv | Dh | ||||||
| mm | mm | mm | mm | mm | mm | mm2 | kg/m |
| 15 | 15 | 15 | 1.0 | 4.5 | 10 | 176 | 1.47 |
| 18 | 18 | 18 | 1.0 | 4.0 | 10 | 254.5 | 2.11 |
| 20 | 20 | 20 | 1.3 | 4.8 | 10 | 314 | 2.47 |
| 25 | 25 | 25 | 1.6 | 6.0 | 12 | 490.9 | 4.10 |
| 32 | 32 | 32 | 2.0 | 7.0 | 16 | 804.2 | 6.65 |
| 36 | 36 | 36 | 2.5 | 8.0 | 18 | 1018 | 8.41 |
| 40 | 40 | 40 | 3.0 | 8.0 | 20 | 1256.6 | 10.34 |
| 50 | 50 | 50 | 3.0 | 9.0 | 24 | 1963.5 | 16.28 |
| 60 | 60 | 60 | 3.0 | 10.0 | 22 | 2827 | 23.26 |
| 63.5 | 63 | 63.5 | 3.0 | 12.0 | 22 | 3167 | 26.20 |
| 65 | 65 | 65 | 3.0 | 12.0 | 22 | 3318 | 27.470 |
| 70 | 70 | 70 | 3.0 | 12.0 | 22 | 3848 | 31.8 |
| 75 | 75 | 75 | 3.0 | 12.0 | 22 | 4418 | 36.9 |
| Grade500/630 | NominalDia. | CrossSection | YieldStrength | TensileStrength | YieldLoad | UltimateLoad | Elongation | NominalWeight |
| mm | mm2 | >=Mpa | >=Mpa | KN | KN | A/% | KG/m | |
| 20 | 314 | 500 | 630 | 157 | 198 | 10 | 2.47 | |
| 25 | 491 | 500 | 630 | 246 | 309 | 10 | 4.1 | |
| 28 | 615 | 500 | 630 | 308 | 387 | 10 | 4.83 |
