High-Performance Hollow Sections and Tubes for Every Application

 When it comes to construction and industrial projects, choosing the right steel sections and tubes is essential for long-term durability and efficiency. At SG Nirman Mart Pvt. Ltd., we offer a complete range of black, GP, and GI hollow sections and round tubes, each engineered to meet IS standards and industry demands.


Our Product Range

  1. Black Hollow Sections

    • Square: 10mm x 10mm to 1000mm x 1000mm

    • Rectangular: 20mm x 10mm to 1200mm x 600mm

    • Thickness: 0.40mm to 25mm

    • Standard: IS 4923
       Known for their strength and versatility, these are perfect for structural frameworks, fabrication, and heavy-duty industrial applications.

  2. Pre-Galvanised (GP) Hollow Sections

    • Square: 10mm x 10mm to 150mm x 150mm

    • Rectangular: 25mm x 12mm to 145mm x 82mm

    • Thickness: 0.80mm to 2.8mm

    • Standard: IS 4923
       GP sections offer excellent corrosion resistance and a smooth finish — ideal for interior, light structural, and architectural projects.

  3. Galvanised (GI) Hollow Sections

    • Square: 20mm x 20mm to 250mm x 250mm

    • Rectangular: 10mm x 20mm to 300mm x 150mm

    • Thickness: 1.60mm to 8mm

    • Standard: IS 4923
       Designed for superior protection and strength in harsh environments like coastal or outdoor sites.

  4. Black Round Tubes & Pre-Galvanised Round Tubes

    • Size Range: 15mm to 350mm (NB Series), 21.3mm to 406.4mm (OD Series)

    • Thickness: 1mm to 25mm

    • Standard: IS 1161, IS 1239, IS 3601
       These tubes are widely used in construction, pipelines, and fabrication, ensuring high weldability and durability.

Built to Last

Each product from SG Nirman Mart meets ISO standards and undergoes strict quality checks to ensure dimensional accuracy, strength, and finish. Whether you’re sourcing GP pipes, GI hollow sections, or black tubes, you can rely on consistent quality every time.

Connect with Us

SG Nirman Mart serves customers across India with reliable supply, competitive pricing, and exceptional customer support.
 Explore our complete range of products on the official SG Nirman Mart website or send your requirements through our Enquiry Page.

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