GI Strip Manufacturer in Kolkata: Premium Quality GI Flats & Strips

Superior Quality GI Strips

Our GI Strips are manufactured from top-grade galvanized steel, ensuring strength and rust resistance that outlasts competitors' products. Every GI strip we produce undergoes rigorous quality testing to meet industry standards.

Best GI Strip Prices in Kolkata

As a direct GI strip manufacturer in Kolkata, we offer wholesale pricing for bulk customers and special rates for contractors and repeat customers. Our pricing structure ensures you get premium GI strips at competitive market rates.

Immediate Availability

Done with "2-week delivery schedules"? We have ready stock in Kolkata to fulfill urgent demands without fanfare.

Custom Sizes Available

Want a particular size? We provide customized GI strip fabrication according to your project specifications.

Standard GI Strips

Standard GI strips are the most commonly used profiles in construction and industrial applications. Key features include:

• Dimensions: Common sizes include 20x3mm, 25x3mm, and 40x5mm with thicknesses ranging from 2mm to 6mm
• Applications: Used in general construction, earthing systems, cable trays, and industrial structures
• Advantages: Excellent conductivity, corrosion resistance, and versatility

These standard strips form the backbone of many electrical and structural applications across Kolkata's construction industry.

Lightweight GI Strips

Lightweight GI strips offer reduced weight without compromising structural integrity. Features include:

• Dimensions: Typically 15x2mm, 20x2mm with thinner profiles
• Applications: Ideal for light-duty applications, decorative elements, and non-load-bearing structures
• Advantages: Easier handling, reduced material cost, and flexibility

These lightweight options are particularly popular in residential projects and smaller installations across Kolkata.

Custom GI Strip Solutions

Beyond standard offerings, Kolkata's GI strip manufacturers provide customized solutions including:

• Perforated GI Strips: Featuring pre-drilled holes for easier assembly in applications like cable trays, shelving, and modular structures
• Cut-to-Length GI Strips: Precision-cut strips according to client specifications, reducing on-site cutting and wastage
• Pre-Fabricated Assemblies: Ready-to-install strip assemblies for specific applications, saving time and labor costs
• Heavy-Duty GI Strips: Reinforced strips for high-load applications in industrial structures and heavy machinery supports

These customized solutions demonstrate the versatility and adaptability of Kolkata's GI strip manufacturing capabilities.

Raw Material Preparation

The manufacturing process begins with the selection of high-quality mild steel, typically in the form of hot-rolled coils or sheets. These materials undergo thorough inspection for chemical composition, surface quality, and dimensional accuracy before proceeding to the next stage.

Strip Forming

The steel is then processed through one of two primary methods:

• Hot Rolling: For larger strips, the steel is heated to approximately 1200°C and passed through a series of rollers that gradually form the flat profile. This process ensures uniform material properties and excellent structural integrity.
• Cold Forming: For smaller strips, the steel is cut and shaped at room temperature using precision machinery. This method provides excellent dimensional accuracy and surface finish.

After forming, the strips are cut to standard lengths, typically 6 meters, though custom lengths are available upon request.

Hot-Dip Galvanizing Process

The distinctive feature of GI strips is the galvanization process, which involves:

1. Surface Preparation: The strips undergo thorough cleaning through degreasing, acid pickling, and fluxing to remove all contaminants and prepare the surface for zinc adhesion.
2. Hot-Dip Galvanizing: The prepared strips are immersed in a bath of molten zinc at approximately 450°C. During this process, the zinc metallurgically bonds with the steel, forming a series of zinc-iron alloy layers topped with a layer of pure zinc.
3. Cooling and Passivation: After galvanizing, the strips are cooled and often treated with a passivation solution to prevent the formation of white rust during storage.

This galvanizing process provides a protective zinc coating typically ranging from 45 to 85 microns in thickness, depending on the steel thickness and application requirements.

Sizes & Specifications

Where to Buy GI Strips in Kolkata?

Easy. Contact Usha Metals or drop by our warehouse in Howrah. We deliver throughout Kolkata, including areas such as Howrah, Barasat, Salt Lake, Behala, and New Town.