PVC WATERSTOPPER DB 203-1 - Premium Waterproof Solution for Concrete Joints
Corrosion - Resistant and Weather - Proof, Ideal for Outdoor and Underground Waterproofing Projects.
1. Core Features
- Superior Material Performance
Adopts high-quality flexible PVC composite (no reclaimed materials) that fully complies with GB/T 18173.2-2014 Polymer Waterproof Materials - Part 2: Waterstops . Key indicators include:
- Mechanical strength: Tensile strength ≥12MPa, elongation at break ≥300%, and tear strength ≥25kN/m —ensuring resistance to tearing during structural deformation;
- Temperature adaptability: Operating range of -35℃ to 65℃, with a brittle temperature ≤-30℃ , withstanding low-temperature bending without cracking and high-temperature exposure without brittleness;
- Environmental resistance: Water absorption rate ≤0.5% , maintaining stability in long-term humid environments. It resists erosion from weak acids (pH 3-10), alkalis, and municipal/light industrial sewage ;
- Aging durability: After 70℃×72h hot air aging, tensile strength retains ≥10MPa and elongation at break retains ≥240% , ensuring a service life of over 30 years under normal use.
- Specialized Dumbbell-Type (DB) Structure
The 203mm width optimizes space efficiency for medium-narrow joints, eliminating waterproof blind spots while avoiding material waste. The DB cross-section features :
- Central elastic bulb: A hollow design that absorbs horizontal/vertical displacement up to 10mm, adapting to structural expansion and settlement—suitable for both construction joints and minor expansion joints ;
- Reinforced bonding arms: 5-7mm thick arms equipped with anti-skid convex ribs , increasing adhesion to concrete by 35% compared to smooth surfaces and preventing displacement during pouring;
- Balanced hardness: Shore A hardness of 68±5 , striking a balance between rigidity for easy installation and flexibility for deformation.
- Rigorous Quality Compliance
- After 70℃×168h hot air aging, tensile strength and elongation at break retention exceed 80% , ensuring long-term durability;
- Meets UL94 V-0 flammability rating and passes microbial erosion tests, avoiding mold growth in damp environments like basements or sewage pools ;
- Each batch undergoes third-party testing for core indicators (hardness, tensile strength, low-temperature flexibility) , with a 100% qualification rate.
2. Application Scenarios
Ideal for medium-narrow joint projects requiring space efficiency and reliable waterproofing :
- Municipal engineering: Underground pipe trench joints, small rainwater collection tank circumferential seams, subway station auxiliary structure expansion joints, and sidewalk expansion joints;
- Water conservancy projects: Small irrigation channel joints, farmland water conservancy pond seams, culvert branch connections, and small reservoir auxiliary joints ;
- Civil construction: High-rise building basement wall/floor joints, prefabricated concrete component connections, retaining wall expansion seams, and lift shaft joints;
- Industrial facilities: Workshop floor medium-narrow expansion joints, small storage tank (30-80m³) circumferential seams, and sewage treatment pool edge joints.
It performs stably under low-to-medium water pressure (≤0.4MPa) and frequent dry-wet alternations .
3. Installation & Advantages
- Efficient Construction & Compatibility
- Easy handling: Flexible texture allows quick cutting and bending for linear, curved, or right-angle joints—no special shaping tools required ;
- Simplified installation: Fixed with ordinary steel bar clamps or template pressing, with the central bulb aligned to the joint center for optimal displacement absorption ;
- Seamless joints: On-site connections are sealed via hot-melt welding (300W PVC gun) or specialized adhesive , reducing joint quantity by 25% compared to 180mm-wide models and cutting construction time by 20%.
- Cost-Effective & Customizable
- Material efficiency: The 203mm width reduces material waste by 35% compared to 240mm-wide alternatives for medium-narrow joints;
- Low maintenance: Insoluble in water, industrial oils, and common solvents , minimizing long-term repair costs;
- Flexible customization: Supports thickness adjustment (4-8mm) and roll length customization (20-25m) , adapting to project-specific needs.
- Reliable Supply & After-Sales
- Packaged in moisture-proof film rolls to protect against sun exposure and rain during transportation and on-site storage ;
- Monthly supply capacity of 80,000 meters, with a 5-7 day delivery lead time;
- Provides free technical support (installation guidance, cross-section drawings) and a 2-year quality guarantee—free replacement for non-human-caused quality issues .
Note: For detailed test reports, customized rib designs, or steel-edge composite modifications, please contact our customer service for one-on-one solutions!