A bridge soars over the canyon,

Turning a chasm into a thoroughfare.

In the vast river of human civilization, bridges are not just physical passages connecting both sides; they are also the intersection of history and the future.

Over the years, Carpoly has been involved in many bridge construction anti-corrosion coating projects, one of which is the Qingshui River Bridge in Guizhou. It has witnessed the historical changes of Guizhou and carries the future development of Guizhou.

Carpoly provided an anti-corrosion coating solution for the concrete piers of the Qingshui River Bridge.

"No place is flat for three feet" - this description fits Guizhou perfectly. Karst topography occupies more than 60% of the province's area, with mountains and deep valleys crisscrossed by ravines. Two points that seem close on the map may require a journey of ups and downs, crossing rivers and mountains.

To shorten the transportation distance and improve efficiency, Guizhou has set up high-speed bridges in the vertical middle section of the high mountains and canyons, and the Qingshui River Bridge is one of the shining pearls among them.

The bridge is 2171 meters long, with a main span of 1130 meters and a height of 406 meters. At the time of completion, it was the second-highest bridge in the world and one of the world's largest span combined girder suspension bridges.

The Qingshui River Bridge stands above the Dalin River Canyon, with the winding road below in sharp contrast to the straight and fast bridge surface.

After the completion and opening of the Qingshui River Bridge, the driving time from Guiyang to Weng'an was shortened to one hour, ending the history of inconvenient transportation in the area and opening up a more convenient and better future. When a high-speed road network connects the villages deep in the mountains with the outside world, at least everyone has the possibility to go out of the mountains.

And if we shift our gaze to other places:

- Changchun's Three Horizontal and Five Vertical Elevated Bridges

- Shanghai's Yangpu Bridge

- Xiamen's Second East Channel

- Foshan's Fengxiang Bridge

Once separated by high mountains, deep valleys, and vast rivers, the cities on both sides are closely connected by the "threading and connecting" of traffic arteries. These infrastructures, represented by big bridges, have always been the basic driving force for regional economic development. They are not only the ties connecting physical space but also the bridges connecting history and the future, witnessing the past of mankind and looking forward to the future.

The completion of one super bridge after another has witnessed the historical and technological development of bridge construction in China, from iron ropes to steel reinforcements to steel cables, and from ordinary paint to epoxy zinc-rich, inorganic zinc-rich, and acrylic polyurethane and other series of heavy anti-corrosive coatings. The continuous development of materials has achieved the iteration of bridges. Carpoly is also fortunate to be a witness and participant in history, with professional capabilities to participate in the construction of these bridges that will have a significant impact on the future.

For steel and concrete bridges, Carpoly Industrial Coatings provides various targeted anti-corrosion protection products, offering professional and efficient coating solutions for bridges in different environments.

**Concrete Bridges:**

Recommended Matching One:

Silane impregnation agent + epoxy closed primer + epoxy intermediate paint + acrylic polyurethane topcoat/ high-performance fluorocarbon topcoat

Features: The product has good sealing performance, excellent appearance, cost-effective, excellent weather resistance, light and color retention, good temperature change resistance, and excellent resistance to de-icing agents, especially suitable for the protection of concrete bridges in cold regions, meeting long-term protection in strong corrosive environments.

Recommended Matching Two:

Water-based epoxy closed primer + water-based epoxy intermediate paint + water-based acrylic polyurethane topcoat

Features: The product is environmentally friendly, has a small odor, excellent adhesion, good corrosion resistance, good sealing performance, and excellent water resistance, with excellent weather resistance and light and color retention.

Recommended Matching Three:

Water-based acrylic closed primer + water-based acrylic intermediate paint + water-based acrylic topcoat/ water-based fluorocarbon topcoat

Features: Environmentally friendly, small odor, excellent adhesion, good corrosion resistance, good sealing performance, cost-effective, and good weather resistance.

**Steel Structure Bridges:**

Recommended Matching One:

Epoxy zinc-rich primer + epoxy iron intermediate paint + acrylic polyurethane topcoat

Features: High solid content, convenient construction; excellent salt spray resistance, good artificial aging resistance, can meet the long-term anti-corrosion requirements of C4 corrosive environment.

Recommended Matching Two:

Epoxy zinc-rich primer + epoxy iron intermediate paint + fluorocarbon topcoat

Features: High solid content, convenient construction; excellent salt spray resistance, good artificial aging resistance, can meet the long-term anti-corrosion requirements of C5-I corrosive environment.

Recommended Matching Three:

Epoxy zinc-rich primer + epoxy iron intermediate paint + polysiloxane topcoat

Features: High solid content, convenient construction, high film thickness in one pass; excellent salt spray resistance, good artificial aging resistance, can meet the long-term anti-corrosion requirements of C5-I corrosive environment.

If bridges are not protected by anti-corrosion coatings, they may find it difficult to withstand the erosion of wind and sun as well as the impact of torrential currents. However, when Carpoly coatings are applied to the surface, they are better protected, can withstand traffic loads and environmental impacts, while maintaining a good appearance and performance, greatly extending their service life, allowing the bridges to stand for a long time in the canyons and the sea.

The rapid development of the times, these magnificent large-scale construction projects continue to change our lives, leading us towards a better future, and Carpoly also protects and decorates these buildings with coatings, making them monuments in the long river of history, allowing them to accompany us for a longer time.