Steel-edge waterstop is a modification of traditional rubber waterstop with steel plate rings being inserted into the middle of vulcanized rubber. High liquid-tightness and high absorption of shear movements make the steel-edge waterstop a recommended choice for expansion, contraction joints and other construction fields with high pressure and structure variable.
Once the structure sedimentation, concrete shrinkage and creep occur, the rubber parts of steel-edge waterstops will be elongated and thin to adjust to these deformations without affecting the adhesion between steel plates and the rubber part, between steel plates and the surrounding concrete. In this way, the steel-edge waterstops are able to withstand greater tension and torsion than traditional waterstops; meanwhile, it effectively prevents concrete loosen, breaking off and the form of leaking cracks.
Physical properties |
B standard |
C standard |
Hardness shore A |
60 ± 5 |
60 ± 5 |
Tensile strength |
2175 psi (min) |
1740 psi (min) |
Ultimate elongation |
380% (min) |
380% (min) |
Permanent compression set 24 hours at 70°C |
35% (max) |
35% (max) |
Permanent compression set 168 hours at 23°C |
20% (max) |
20% (max) |
Brittle temperature |
-45°C (max) |
-45°C (max) |
Tear strength |
30 kN/m (min) |
25 kN/m (min) |
Galvanized steel plate and rubber adhesive (Mpa) R type damage |
6 (min) |
6 (min) |
Ozone aging, 50 PPMM, 20%, 48 hours |
2 level |
2 level |
Hot-air aging |
Hardness changes (shore A) |
8 (max) |
8 (max) |
Tensile strength |
12 (min) |
12 (min) |
Elongation at break |
300% (min) |
300% (min) |
- A diagram of steel-edge waterstop
- Water conservancy projects.
- Dams, tunnels and channels.
- Basements of high-rise building.
- Slabs and wall junctions.
- Duct piece joint of shield segment tunnel.
- Construction, expansion and contraction joints.
- Conduit joints and infrastructure deformation joints.
- Underground engineering.
- Quality EPDM rubber with high tensile strength.
- Galvanized steel plate for high rust and corrosion resistance.
- With punched holes on the steel plate for easy installation.
- Adjustable to high movements and deformations.
- High adhesion between the steel plates and the rubber.
- Excellent fastness between the steel plates and surrounding concrete.
- Custom types are welcomed.
1. Advanced and Sufficient equipment More than 100 sets of most advanced equipment in our workshop ensure timely delivery time for large orders. Additional, it can ensure standardized production, which accord with international standard.
2. Experienced and skilled worker team Equipped with professional production skills and several years experience, our worker team can improve production efficiency and reduce production losses for cost reduction.
3. Multiple models for completed products We have almost all of standard bearing pad models to produce standard bearing pads, including pot bearing, laminated bearing pad, spherical bridge bearing, high damping rubber bearing and lead rubber bearings.
4. Perfect Package & Timely delivery All the products are inspected before loading, then they will be perfectly packed. Then our skilled loading team will operate the equipment for easy and fast loading.
5. Professional sales team Full knowledge of bearing pad products, good spoken and written English and excellent communication skills can offer you the best solutions to your questions. You can ask for recommendation, customized service and any other information you want from them.