Waterstop steel plates for construction are critical core components in architectural waterproofing projects, primarily used in vulnerable areas prone to water infiltration, such as construction joints and expansion joints in concrete structures. Thanks to their unique structural features, they form a strong bond with concrete, effectively blocking water penetration pathways and delivering outstanding waterproofing and anti-seepage performance. This product is rigorously developed and manufactured in accordance with GB 50108-2008, the "Technical Specification for Waterproofing of Underground Engineering," as well as relevant industry standards. With precise dimensional accuracy, superior impermeability, and consistently reliable structural strength, it perfectly suits a wide range of underground and hydraulic engineering applications, providing solid and dependable assurance for the overall quality of project waterproofing.

Product Core Parameter Table

Product Advantages

1. Highly effective waterproofing, providing long-lasting water resistance

The product is made from high-quality, low-carbon steel sheets or high-strength steel sheets, which undergo precise cold-rolling and forming processes to create a stable structural design. During concrete pouring, the waterstop steel plate integrates seamlessly with the concrete, while its unique folded-edge design effectively extends the path of water penetration. Combined with an impermeability performance capable of withstanding pressures of ≥1.5 MPa, this ensures that water infiltration channels are blocked at their source. Additionally, surface treatments such as hot-dip galvanizing significantly enhance the product's corrosion resistance, enabling it to maintain long-lasting waterproofing effectiveness—even in challenging underground environments characterized by high humidity, salinity, and alkalinity—for a service life of over 30 years.

2. Structurally stable with excellent strength

The selected materials—Q235B and Q345B—themselves exhibit excellent mechanical properties. After undergoing professional forming processes, the product’s precision metrics, such as straightness and flatness, are rigorously controlled to ensure that post-installation structural deformation won’t compromise the waterproofing performance. When subjected to external forces like concrete pouring impacts or structural settlement, the waterstop steel plates effectively distribute stress. Moreover, the weld strength is highly compatible with the base material’s strength, preventing issues such as weld cracking. This ensures robust structural support at joint areas while simultaneously delivering reliable waterproofing, achieving both enhanced structural integrity and superior water resistance.

3. Easy to install, highly adaptable

The product is manufactured using standardized specifications, while also supporting custom cutting to specific lengths and specialized edge-creasing services tailored to engineering requirements. This ensures precise compatibility with construction joints and expansion joints of varying widths and depths. During installation, the product can be securely fixed to steel reinforcement frameworks through multiple methods, such as welding or tying—making the process both simple and highly efficient. In fact, a skilled worker can complete 80–120 meters of installation work in a single day. Moreover, the product is lightweight and easy to handle, allowing for flexible application whether it’s used in tight underground garage construction joints or large-scale hydraulic structures’ expansion joints—significantly boosting overall construction efficiency.

4. Excellent value for money, hassle-free maintenance

The product boasts a stable supply of raw materials and a mature production process, ensuring high quality while effectively controlling production costs. Compared to traditional rubber waterstops and similar products, it offers a significantly longer service life and requires minimal maintenance throughout its usage—only demanding adherence to proper construction guidelines during installation to deliver consistently reliable waterproofing performance over the long term. Even in challenging underground environments, this product excels at resisting corrosion and aging, thereby reducing both labor and financial investments required for future waterproofing repairs, ultimately helping to lower overall project operating costs.

Application Scenarios

1. Underground Construction Project Scenarios

Suitable for waterproofing construction joints, settlement joints, and expansion joints in underground structures such as basements, underground parking garages, underground shopping malls, and subway stations. At the construction joints where basement walls meet the floor slab, installing waterstop steel plates can effectively prevent groundwater from seeping through the seams, ensuring a dry underground environment. In large-scale underground projects like subway stations, where structural settlement may create potential gaps, waterstop steel plates, with their exceptional strength and impermeability, help maintain the stability of the waterproofing system, making them ideal for engineering applications across various depths and geological conditions.

2. Hydraulic and Hydroelectric Engineering Scenarios

Suitable for waterproofing joints in hydraulic structures such as reservoir dams, sluice gates, culverts, and hydropower plant buildings. After impoundment, reservoir dams endure tremendous water pressure. Waterstop steel plates are specifically designed for construction and deformation joints in dam concrete, effectively blocking seepage pathways and preventing potential safety hazards caused by dam leakage. In watery structures like culverts and sluice gates, these waterstop steel plates can withstand the erosive force and prolonged immersion of flowing water, ensuring reliable waterproofing at structural joints while adapting to various water conditions, including freshwater and slightly brackish water environments.

3. Municipal Engineering Scenarios

Plays a vital role in municipal projects such as urban utility tunnels, underground tunnels, sewage treatment plants, and foundation piles for municipal bridges. Urban utility tunnels house various types of pipelines, demanding extremely high waterproofing standards. Waterstop steel plates are used at the joints during segmented construction of the tunnels, effectively preventing groundwater from seeping in and damaging the pipelines. In sewage treatment plants, waterstop steel plates help resist corrosion from wastewater, ensuring that the joints remain leak-proof and maintaining the stable operation of the entire treatment process—perfectly suited to the complex environmental demands of urban municipal infrastructure development.

4. Construction Excavation and Foundation Engineering Scenarios
Suitable for waterproofing foundation areas such as building excavation support structures, pile foundation caps, elevator shaft excavations, and sump pits. Elevator shaft excavations and sump pits, located in areas with relatively low groundwater levels, are prone to water accumulation and leakage issues. Installing waterstop steel plates can effectively block seepage pathways. At the joints between pile foundation caps and the main structural components, waterstop steel plates enhance the waterproofing performance of these connections, preventing structural corrosion caused by water infiltration in the foundation area. This solution is adaptable to various construction scenarios in building foundations, laying a solid groundwork for the overall safety of the structure.