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High-Performance Engineered Bridge Products

Fabricated in Bangladesh's first domestic compliant plant in strict accordance with AASHTO M297, ASTM D5973, and BS 5400 standards. Engineered for maximum movement capacities, water-tightness, and dynamic fatigue resilience.

PRODUCT SPECIFICATIONS

Manufactured Bridge Components & Accessories

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KIAN Strip Seal Expansion Joint
Expansion Joints ASTM D5973 / AASHTO M297

KIAN Strip Seal Expansion Joint

Mechanically sealed armored joint with extruded elastomeric seal retained in profiled steel rail edge beams. Movement range: 10mm to 80mm.

Technical Specifications
Movement Range:10 mm to 80 mm
Sealing Profile:Mechanically Locked Extruded Neoprene/Chloroprene
Steel Edge Beams:Profiled S355 / ASTM A572 Heavy Extrusions
Anchorage System:High-Strength Concrete / Elastomeric Mortar Anchor Studs
Rotation Capacity:Multi-Axis Rotation in All 3 Planes Without Restraint
KIAN Finger Expansion Joint
Expansion Joints AASHTO LRFD / BS 5400

KIAN Finger Expansion Joint

Robust continuous running surface with low noise and reduced vibration for demanding highway and railway bridge expansion conditions.

Technical Specifications
Movement Capacity:80 mm to 400+ mm
Riding Quality:Continuous Surface with Low Noise & Reduced Vibration
Seismic Capability:Engineered for High Seismic Displacement Accommodation
Drainage System:Integrated Galvanized Steel / Neoprene Drainage Trough
Maintenance:Engineered for Easy Inspection and Future Segmental Replacement
High Performance Elastomeric Rubber Expansion Joint
Expansion Joints AASHTO M297 / EN 1337-3

High Performance Elastomeric Rubber Expansion Joint

Continuous vulcanized rubber expansion joint absorbing deck movements and evacuating water while bearing traffic loads without extra drainage devices.

Technical Specifications
Movement Capacity:30 mm to 100 mm
Deck Compatibility:Installable on Thinnest Slabs and Superstructures
Waterproofing:100% Watertight at Joint Level without Drainage Devices
Core Construction:Continuous Rubber Surface with Embedded Steel Reinforcement Plates
Traffic Disturbance:Eliminates Vibration and Noise Disturbances
Sinus Plates (Sinusoidal Noise-Reducing Cover Plates)
Expansion Joints DIN / EN / AASHTO

Sinus Plates (Sinusoidal Noise-Reducing Cover Plates)

Specially profiled sinusoidal steel cover plates bridging modular joint gaps, reducing traffic noise by up to 80% and protecting two-wheelers.

Technical Specifications
Noise Reduction:Reduces Bridge Traffic Noise by up to 80%
Geometry:Sine Wave / Teeth Shape Eliminating Longitudinal Gaps
Rider Safety:Safe for Cyclists and Motorcyclists with Zero Gap Hazards
Application:Modular Bridge Expansion Joints on Highways and Urban Bridges
Center Beam Linkage:Partially Covers Gaps Between Center Beams and Edge Beams
MRT Viaduct & Pedestrian Expansion Joint
Expansion Joints MRT Standards / AASHTO

MRT Viaduct & Pedestrian Expansion Joint

Steel plate bridge expansion joint engineered for pedestrian traffic on bridge kerbs, footways, pedestrian bridges, and transit viaducts.

Technical Specifications
Application:Bridge Kerbs, Footways, Pedestrian Bridges, MRT Stations
Mechanism:Continuous Steel Plate Sliding Over Connected Second Plate
Seal Integrity:Elastomeric Seal Mechanically Locked into Extrusion Cavity
Contaminant Protection:Prevents Ingress of Water, Debris, and Fine Contaminants
Surface Safety:Non-Slip, Stable, and Safe Surface for Foot Traffic
Architectural Expansion Joint Solutions
Expansion Joints ASTM E1399 / ISO 11600

Architectural Expansion Joint Solutions

Comprehensive durable solutions for commercial centers, malls, railway stations, airports, bridges, schools, and hospitals concealing structural movement.

Technical Specifications
Profiles Available:Aluminum Profiles, Rubber Profiles, Hybrid Combinations
Movement Drivers:Accommodates Shrinkage, Thermal Expansion, Seismic Activity
Applications:Shopping Malls, Airports, Rail Stations, Hospitals, Schools
Aesthetic Integration:Designed to Conceal Movement Gaps with Flush Architectural Finish
Fire Rating:Compatible with Multi-Hour Fire Barrier Blankets
Railway Bridge Expansion Joints
Expansion Joints UIC 774-3R / Railway Standards

Railway Bridge Expansion Joints

Heavy-duty watertight mat expansion joints engineered specifically for railway bridges, transferring loads via the ballast bed.

Technical Specifications
Load Transfer:Dynamic Train Traffic Loads Transferred via Ballast Bed
Movement Absorption:Simultaneously Absorbs Displacement & Superstructure Rotation
Waterproofing:High-Integrity Watertight Sealed Structure Gap
Operating Profile:Not Driven Directly on Surface / Sub-Ballast Protection
Durability:High Resistance to High-Speed Train Vibrations
Modular Bridge Expansion Joint Systems
Expansion Joints AASHTO M297 / ASTM D5973

Modular Bridge Expansion Joint Systems

High-performance steel modular joints dividing total movement into modules connected by rubber V-profiles for large infrastructure movements.

Technical Specifications
Total Movement Gap:Up to 1,200 mm Divided into Individual Gaps/Modules
Center Beams:Heavy Steel Center Beams Guaranteeing Continuous Running Surface
Rubber Profiles:Rubber V-Shaped Profiles for Watertightness & Dynamic Flexibility
Application Scope:Highway Expressways, Railway Viaducts, Marine Infrastructure
Seismic Resilience:Accommodates High Seismic Movement with Reduced Maintenance
Pre & Post-Tensioning Systems & Hardware
Post-Tensioning PTI Recommendations / ASTM A416

Pre & Post-Tensioning Systems & Hardware

Complete civil and mechanical post-tensioning hardware: PC strands, anchor heads, wedges, and corrugated ducts for all bridge structural typologies.

Technical Specifications
Structural Methods:Incremental Launching, Precast Segmental, Balanced Cantilevers
Strand Specification:12.7 mm & 15.2 mm High-Tensile Low-Relaxation PC Strands
Anchor Components:Machined Forged Steel Anchor Heads & Hardened 3-Piece Wedges
Corrugated Ducts:Galvanized Steel & HDPE Corrugated Grout Enclosures
Efficiency:> 95% Ultimate Tensile Strength in Bench Testing
Structural Bearings (Spherical, Pot & Elastomeric)
Bridge Bearings BS 5400 (Part 9) / BS EN ISO 9001

Structural Bearings (Spherical, Pot & Elastomeric)

Full range replacement bearings (mechanical, spherical, pot, elastomeric, lifting & guide) designed to BS 5400 and ISO 9001 exceeding standards.

Technical Specifications
Bearing Types:Spherical, Pot, Elastomeric Laminated, Lifting & Guide Bearings
Design Code:Engineered to BS 5400 Exceeding BS EN ISO 9001 Standards
Vertical Load:500 kN to Exceeding 35,000 kN Capacity
Sliding Interface:Virgin PTFE Dimpled Surfaces with Stainless Steel Mate
Replacement Feature:Incorporates Modifications for Rapid Jacking Replacement
W-Beam Highway Guardrail Safety Barriers
Highway Safety AASHTO M180 / EN 1317

W-Beam Highway Guardrail Safety Barriers

Most common longitudinal roadside safety barrier with distinctive corrugated 'W' shaped steel rails redirecting errant vehicles away from hazards.

Technical Specifications
Rail Profile:Distinctive Corrugated W-Beam High-Tensile Steel Rail
Barrier Classification:Semi-Rigid Longitudinal Roadside Highway Safety System
Function:Safely Redirects Errant Vehicles Away from Roadside Hazards
Protective Coating:Heavy Hot-Dip Galvanized per ASTM A123 / ISO 1461
Hardware:Breakaway Cable Terminals (BCT), Spacers, & Grade 8.8 Fasteners
Road Signboards with Structural Trusses
Highway Safety ASTM D4956 / Highway Traffic Codes

Road Signboards with Structural Trusses

Critical traffic control devices composed of durable aluminum/steel sign face and structural gantry supports with retro-reflective sheeting.

Technical Specifications
Sign Face Material:Structural Aluminum Sheet (2mm to 3mm) or Heavy Steel Plate
Reflective Sheeting:High-Intensity Retro-Reflective Sheeting per ASTM D4956
Visibility:High Night Visibility Reflecting Headlights Back to Drivers
Gantry Structure:Galvanized Overhead Steel Truss Gantries and Cantilever Poles
Weather Resistance:Resistant to UV Degradation, Severe Winds, and Heavy Monsoons
Bridge Deck Handrails for Pedestrian Safety
Highway Safety AASHTO Pedestrian Railing / BS 6779

Bridge Deck Handrails for Pedestrian Safety

Safety barrier installed along bridge deck edges protecting pedestrians, cyclists, and maintenance personnel from falls.

Technical Specifications
Purpose:Pedestrian, Cyclist, and Maintenance Personnel Safety Barrier
Installation:Anchored Along Bridge Deck Edges, Kerbs, and Parapets
Design Integrity:Engineered to Withstand Specified Horizontal Pedestrian Loads
Material:Hot-Dip Galvanized Steel / Architectural Stainless Steel / Coated MS
Fabrication:Modular Bolted or Welded Panels with Corrosion Protection
MS Clamps for Bridge Sewerage & Drainage Lines
Bridge Drainage Structural Steel Standards / ISO 1461

MS Clamps for Bridge Sewerage & Drainage Lines

Mild Steel clamps (>= 3mm thick, galvanized) anchoring PVC drainage runoff pipes to bridge superstructures under dynamic traffic vibration.

Technical Specifications
Material Grade:Mild Steel (MS) Galvanized or Painted for Corrosion Defense
Plate Thickness:Not Less than 3 mm for Structural Heavy Clamps
Application:Securing Bridge Deck Drainage & Sewerage Runoff PVC Pipes
Vibration Resistance:Mechanically Grips Pipe Resisting Traffic Dynamic Vibration
Load Transfer:Transfers Pipe Dead Weight & Hydraulic Surge to Bridge Superstructure