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Rubber-Steel Composite Waterstop
mingheng
Product Features
Steel Plate Anchorage:Steel plates on both sides lock into concrete,preventing displacement and water seepage
High Tensile Strength:Steel plate reinforcement increases overallstrength, resisting higher water pressure
Good Elasticity:Rubber body accommodates thermal expansion, contraction and settlement of concrete
Corrosion Resistance:Steel plates provide mechanical protection and maintain integrity in concrete environment
Customizable Dimensions:Width, thickness, steel plate size and length can be produced per project drawings

Technical Specifications
Steel-edged rubber waterstop is installed across construction or expansion joints before concrete pouring. The central rubber body acts as a flexible water barrier, while the steel plates on both sides are embedded into the concrete on each side of the joint. When concrete hardens, the steel plates become locked into the concrete, preventing the waterstop from being pulled out or shifted by water pressure or structural movement. The rubber section remains elastic, allowing it to stretch or compress as the joint opens or closes due to temperature changes or foundation settlement. Unlike a simple swellable waterstop that expands only when wet, this steel plate design provides continuous mechanical resistance combined with rubber sealing, making it particularly effective for expansion joints with large movement or high water head applications.
No. | Item | Parameter | |
| 1 | Hardness (Shore A) / degree | 60±5 | |
| 2 | Tensile strength / MPa | ≥10 | |
| 3 | Elongation at break / % | ≥380 | |
| 4 | Compression set / % | 70℃*24h,25% | ≤35 |
| 23℃*168h,25% | ≤20 | ||
| 5 | Tear strength / (kN/m) | ≥30 | |
| 6 | Brittleness temperature / ℃ | ≤-45 | |
| 7 | Heat aging70℃*168h | Change in hardness (Shore A) / degree | ≤+8 |
| Tensile strength / MPa | ≥9 | ||
| Elongation at break / % | ≥300 | ||
Application Scenarios
Tunnels: expansion joints and settlement joints in highway and railway tunnels
Underground structures: basement external walls and floor slabs subject to high water table
Water treatment facilities: joints in sewage treatment tanks, water tanks, and reservoirs
Transportation infrastructure: bridge abutments, culvert expansion joints, subway stations
Industrial construction: chemical plants and power plants where high water resistance is required

Packaging

FAQ
What is the difference between a steel-edged rubber waterstop and a standard rubber waterstop?
A standard rubber waterstop relies solely on rubber-to-concrete bonding, which may fail under high water pressure. The steel-edged type adds mechanical anchorage through steel plates, providing much higher pull-out resistance and better performance in expansion joints with large movement.
How should steel-edged rubber waterstops be stored?
Store indoors in a cool, dry, ventilated place away from direct sunlight and heat sources. Do not stack heavy items on top. Avoid contact with acids, alkalis, oils, and organic solvents.
What quality certifications do you have?
Our management system is certified to ISO 9001 (Quality), ISO 14001 (Environment), and ISO 45001 (Occupational Health and Safety).
Can it be customized?
Yes. We customize width, rubber thickness, steel plate dimensions, and overall length according to project drawings or technical requirements. Technical parameters can also be adjusted based on project specifications.
What is the lead time for steel-edged rubber waterstops?
The lead time is typically 15 to 40 days after order confirmation, depending on quantity and specifications.
How long does it take to get a quote?
We will provide a quote within 24 hours after receiving your inquiry.