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    Weizhong Company adheres to the business philosophy of "Quality First, Customer Supreme, Honest and Trustworthy, and Active Innovation".

Bridge and road expansion joint seals
Expansion joint seals are critical components in bridge and road construction, regulating structural deformation caused by temperature fluctuations and loads while also providing waterproofing, dustproofing, and vibration reduction. Our seals utilize high-performance rubber materials and advanced structural designs to ensure durable and reliable sealing performance in a variety of environmental conditions.
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High-Performance Bridge Expansion Joint Seals | 20+ Years Lifespan


Product Overview

Expansion joint seals are critical components in bridge and road construction, regulating structural deformation caused by temperature fluctuations and loads while also providing waterproofing, dustproofing, and vibration reduction. Our seals utilize high-performance rubber materials and advanced structural designs to ensure durable and reliable sealing performance in a variety of environmental conditions.


Technical Specifications

Parameter

Specification Range

Movement Capacity

±25mm to ±200mm

Material Types

CR, EPDM, NR, SILICONE, PU

Hardness (Shore A)

50-80 Shore A

Tensile Strength

≥12 MPa

Elongation at Break

≥350%

Compression Set

≤20% (22h at 70°C)

Operating Temperature

-40°C to +80°C

Weather Resistance

Excellent (1000h UV test)

Ozone Resistance

100 pphm, 40°C, 96h

Waterproof Rating

IP68

Abrasion Resistance

≤120 mm³

Tear Strength

≥30 kN/m

Fire Rating

B-S1, d0

Chemical Resistance

Excellent to oils, salts, acids

Design Life

20-25 years

Colors Available

Black, Grey, Custom


Key Product Highlights

· Superior Durability: Using a special composite rubber formula, weather resistance is increased by 50%, with a designed service life of over 20 years. Its unique tear-resistant structure boasts a tear strength of >30kN/m, far exceeding industry standards. Its three-layer protection design effectively resists UV, ozone, and chemical corrosion.


· Intelligent Technology Innovation: An integrated intelligent monitoring system tracks movement and temperature changes in real time, providing predictive maintenance alerts and significantly reducing the risk of unplanned downtime. Digital installation guidance ensures 99.5% installation accuracy.

· Fully adaptable to all scenarios: Its wide operating temperature range (-40°C to 80°C) allows for easy handling in extreme climates. Its modular design supports over 30 different configurations to meet individual needs. Rapid system replacement reduces maintenance time by 60%.


Why Choose Our Sealing Strips?

1.Quality Assurance System

· Raw material traceability management - Quality control from the source

· Fully automated production line - Accuracy of ±0.15mm

· 72-hour simulation testing - 1:1 replica of the on-site environment

· Three-level quality inspection - 100% factory pass rate

2.Professional Technical Support

· Pre-sales: Free technical consultation + personalized solution design

· During-sales: On-site installation guidance by professional engineers

· After-sales: 24-hour response + regular follow-up inspections

3.Cost Optimization Advantages

· Extended maintenance cycle to 5 years, reducing lifecycle costs by 40%

· Standardized inventory management, shortening delivery time to 7 days

· Bulk purchases enjoy tiered discounts, saving up to 25%

4.Certifications and Standards

· ISO 9001/14001 quality and environmental system certifications

· Nationally patented technology


Application Guide

1、Transportation Infrastructure

· Highway Bridges Recommended: Strong load-bearing capacity, Excellent waterproofing

· Urban Elevated Roads: Significant noise reduction, Easy installation

· Railway Bridges: Excellent seismic resistance, High durability

2、Special Project Scenarios

· Cross-sea Bridges: Salt spray corrosion resistance, real-time monitoring

· Bridges in Cold Regions: Remain flexible at -60°C, resistant to freeze-thaw cycles

· Industrial Park Roads: Oil, acid, and alkali resistance

3、Construction and Municipal Engineering

· Large Commercial Complexes: Shock and noise reduction, aesthetically pleasing

· Underground Parking: Heavy-duty, slip-resistant, and safe

· Hospital and School Buildings: Green and environmentally friendly, meeting VOC standards


FAQ

Q: What is the expected service life of your products?

A: Standard products: 15-20 years under normal conditions

Premium series: 20-25 years with proper installation and maintenance

Actual lifespan depends on traffic volume, environmental conditions, and maintenance practices

Q: What are the key installation considerations?
A: Surface preparation: Must be clean, dry, and dust-free

Ambient temperature: +5°C to +40°C during installation

Proper compression: 15-25% of original width

Curing time: 4-24 hours depending on temperature and adhesive

Q: Do you offer samples for testing?
A: Yes, we provide:

Free samples for standard products (customer pays shipping)

Custom samples available for material testing

Third-party testing reports available upon request

Project references from similar applications

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