GI Decking Sheet built for load, span & durability

Roll-formed decking sheets in 50mm, 60mm, 75mm & 80mm permanent shuttering and reinforcement for composite floors.

Clear Span
50MM
Clear Span
60MM
Clear Span
75MM
Clear Span
80MM
Profiles: 50 / 75 / 60 / 80 mm
Less concrete, lighter, faster floors
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Steel Decking Sheets for Composite Floor Systems.

Alfa PEB Limited offers 50, 60, 75 and 80 mm profile-depth decking sheets for composite floor systems in industrial buildings, warehouses, mezzanines and commercial projects. These profiled steel sheets serve as permanent formwork during concrete placement and, where designed for composite action, work with the cured concrete as part of the finished floor. Steel decking supports efficient installation and reduces the need for conventional removable shuttering. The appropriate profile depth, steel thickness and support arrangement are selected based on beam spacing, slab depth and project loads, with temporary propping provided where required by the structural design.

Permanent Formwork for Concrete Floors 50 / 60 / 75 / 80 mm Profile Options Suitable for Mezzanines and Multi-Storey Floors Selection Based on Project Specifications
Pre-Engineered Buildings by Alfa PEB Limited

Why Choose Alfa PEB for Decking Sheets?

Alfa PEB Limited offers 50, 60, 75 and 80 mm profile-depth decking sheets for mezzanine floors, industrial platforms, commercial buildings and PEB projects. Our steel decking solutions provide permanent formwork for concrete slabs, with profile selection based on your floor layout, support spacing and structural requirements.

Multiple Profile Options

Choose from 50, 60, 75 and 80 mm profile depths to suit the beam layout, slab design and loading requirements of your project.

Efficient Floor Design

Profiled decking can help optimise concrete volume and floor weight when incorporated into a suitably engineered composite slab system.

Permanent Formwork

Decking sheets remain beneath the concrete after casting, reducing removable shuttering. Temporary propping is provided where the design requires it.

Faster Floor Preparation

Roll-formed sheets can be positioned and fixed over supporting beams, helping teams prepare floors for reinforcement and concrete placement.

Project-Based Selection

Deck profile and steel thickness are matched to approved specifications, accounting for support spacing, concrete depth and construction loads.

Experience Since 1992

Work with Alfa PEB Limited, bringing experience in steel building solutions and an understanding of industrial and commercial construction requirements.

Technical Specifications

GI Decking Sheet standard specification

Specification Dimension
Profile Depth 50 mm
Pitch 230 mm
Overall Width 931 mm
Covered Width 910 mm
Thickness Options 0.8 mm to 1.2 mm
Type Galvanized Steel
Yield Strength 240 MPa – 350 MPa
Length Up to 12000 mm
50mm Decking Sheet Specifications
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Specification Dimension
Profile Type Re-entrant Composite Metal Deck
Deck Depth 60 mm
Overall Depth ~72 mm (including re-entrant)
Effective Cover Width 666 mm
Pitch ~333 mm
Thickness 0.8 to 1.2 mm
Steel Grade S350 / S450
Coating Galvanized Z120 / Z275
Length As per requirement
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Specification Dimension
Profile Depth 75 mm
Pitch 305 mm
Overall Width 922 mm
Covered Width 915 mm
Thickness 0.80 mm to 1.2 mm
Type Galvanized Steel
Yield Strength 240 MPa – 350 MPa
Length Up to 12000 mm
Clear Span
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Specification Dimension
Profile Depth 80 mm (92 mm overall with re-entrant)
Effective Cover Width 600 mm
Available Thickness 0.9 mm to 1.2 mm
Steel Grade S350 / S450
Coating Options Galvanized Z120 / Z275
Application Type Composite Floor Deck
Clear Span
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Applications.

High-Rise Buildings

50 mm decking sheets support composite slab construction in high-rise buildings, helping improve floor strength, speed, and structural efficiency.

Multi-Storey Industrial Buildings

Ideal for multi-level industrial structures where strong floor support, faster installation, and reliable load distribution are required.

Commercial Buildings & Multiplexes

Suitable for commercial floors, multiplexes, and large building projects that need durable steel floor decking systems.

Office Buildings

Used in office building floor systems to support faster slab construction and efficient use of structural steel.

Supermarkets & Malls

Provides strong and stable floor decking support for retail buildings, malls, supermarkets, and high-traffic commercial spaces.

Power Plant Buildings

Suitable for power plant structures and service floors where heavy-duty steel decking and reliable slab support are required.

Mezzanine Floors

Perfect for mezzanine floor construction in warehouses, factories, and industrial buildings to create additional usable floor space.

Industrial Warehouses

Used in warehouse flooring systems, storage areas, and industrial platforms requiring strength, durability, and fast installation.

FAQ's

A GI decking sheet is a galvanized steel sheet roll-formed into a trapezoidal profile, used in composite floor slabs. It acts first as permanent formwork for the wet concrete, then as tensile reinforcement that works with the cured slab.

Alfa supplies four trapezoidal profiles 50 mm, 75 mm, 60 mm and 80 mm so you can match the profile depth to your span and load.

The number is the profile (rib) depth. A deeper rib gives greater stiffness and longer clear spans. 50 mm suits short spans and thinner slabs; 75 mm handles longer clear spans; 60 mm gives unpropped spans over 3.5 m with efficient cover; and 80 mm offers the longest spans with the fewest secondary beams.

Decking sheets are available in 0.8, 0.9, 1.0 and 1.2 mm base metal thickness depending on profile. The right gauge depends on your span, load and profile depth.

The 60mm profile enables unpropped spans in excess of 3.5 m, and the deeper 80mm profile spans even further reducing secondary beams and temporary props. Exact spans depend on slab depth, gauge, steel grade and fire rating.

Composite slabs built on these decking profiles can achieve fire ratings of up to 4 hours, depending on slab depth, reinforcement and design.

GSM is the zinc coating mass on the steel, available up to 275 GSM. Higher GSM gives greater corrosion protection.

Alfa uses high-tensile hot-dip galvanized coil in structural grades (typically S350, and S450 for 80mm), conforming to structural grade standards.

Profile and thickness follow from span, load, slab depth and support conditions. Longer spans and heavier loads call for a deeper profile and heavier gauge. Share your span and load and our team will confirm the specification.

Price depends on profile (50/75/60/80), thickness, coating (GSM), steel grade, length and quantity, and moves with steel coil rates. Send your requirement for a current, itemised quotation.

Alfa manufactures and supplies GI decking sheets across India from multiple plants. Request a quote through the form on this page and our sales team will handle pricing and delivery.

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