PVC WATERSTOPPER DB 220-1 - High - Quality Waterproofing for Concrete Joints

1. Core Features

(1) Premium Material & Stable Performance

• 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℃, enabling it to withstand 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 also 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.

(2) Specialized Dumbbell-Type (DB) Structure

• Central elastic core: A hollow bulbous design that absorbs horizontal/vertical displacement up to 12mm, adapting to structural expansion and settlement—ideal for both construction joints and minor 伸缩缝；
• Reinforced bonding wings: 6-7mm thick wings equipped with multi-rib anti-skid profiles , increasing adhesion to concrete by 35% compared to smooth surfaces and preventing displacement during pouring;
• Balanced hardness: Shore A hardness of 65±5 , striking a perfect balance between rigidity for easy installation and flexibility for deformation.

(3) Rigorous Quality Compliance

• 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) in accordance with ASTMD412 standards , achieving a 100% qualification rate;
• Compatible with international waterproof engineering acceptance criteria, ensuring seamless integration into global projects.

2. Application Scenarios

• Municipal engineering: Underground pipe trench joints, small rainwater regulation 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 (30-100m³) circumferential seams, and sewage treatment pool edge joints .

3. Installation & Advantages

(1) 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 core aligned to the joint center for optimal displacement absorption;
• Seamless joints: On-site connections are sealed via hot-melt welding (300W PVC welding knife ) or specialized adhesive, ensuring waterproof system integrity and reducing construction time by 20% compared to traditional sealing materials.

(2) Cost-Effective & Customizable

• Material efficiency: The 220mm width reduces material waste by 30% 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.

(3) 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.