Reliable, durable, and customizable engineering rubber products and bridge components for infrastructure projects worldwide.
Hydrophilic Waterstop Strip is a high-performance sealing material designed for construction joints, expansion joints, and concrete connections. It expands upon contact with water to fill gaps and provide reliable waterproof sealing. It is widely used in underground structures, tunnels, water conservancy projects, municipal works, and bridge construction. Waterstop strips are available in BW and PZ types.
| BW Type Parameter | |||
| Item | Index | ||
| BW-150 | BW-220 | BW-300 | |
| Expansion Rate % | 150 | 220 | 300 |
| Flow at high temperature(80℃×5h) | No flow | ||
| Low temperature test(-20℃×2h) | No embrittlement | ||
| PZ Type Parameter | ||||||
| Item | Index | |||||
| PZ-150 | PZ-250 | PZ-400 | PZ-600 | |||
| Hardness (Shore A) | 42±7 | 45±7 | 48±7 | |||
| Tensile strength/Mpa | 3.5 | 3 | ||||
| Elongation at break/% | 450 | 350 | ||||
| Expansion rate in volume/% | 150 | 250 | 400 | 600 | ||
| Repeated water immersion test | Tensile strength/Mpa | 3 | 2 | |||
| Elongation at break/% | 350 | 250 | ||||
| Expansion rate in volume/% | 150 | 250 | 300 | 500 | ||
| Low temperature bending(-20°C*2h) | No crack | |||||
| Differences Between BW Type and PZ Type Hydrophilic Waterstop Strip | ||
| BW | PZ | |
| Material Structure | Made of flexible putty-like material with excellent compressibility and gap-filling ability | Pre-formed at factory with fixed cross-section and dimensions |
| Water Swelling Performance | Faster expansion rate, effectively filling small gaps in concrete joints | Better expansion stability and long-term waterproof performance |
| Installation Method | Easy to compress and install according to different joint shapes | Installed according to fixed specifications for standardized construction |
| Main Applications | Suitable for construction joints, expansion joints, and complex waterproofing applications | Widely used in tunnels, subways, hydraulic projects, and high-demand waterproofing structures |
PZ:
BW:
Common questions about bridge bearings, expansion joints, waterstop systems, customization, delivery and technical support.
Yes. We support customized manufacturing according to drawings, dimensions, profiles, materials, hardness and technical specifications.
Yes. Samples can be provided for product evaluation and technical confirmation before bulk production, depending on the product.
Quality control includes raw material inspection, production monitoring, dimensional inspection and finished product testing according to product requirements.
Yes. We supply products to international customers in Asia, Africa, the Middle East, Eastern Europe, South America and other markets.
Products can be manufactured according to applicable national, international or project-specific standards based on the product type and customer requirements.
We can review your requirements and provide product recommendations, customized manufacturing and a quotation.