Square Hollow Section

Made through controlled, product-relevant stages.

Mild Steel ERW Square Hollow Sections are high-strength steel tubes manufactured using the Electric Resistance Welding (ERW) process. Designed for durability, precision, and excellent load-bearing capacity, these hollow sections offer superior structural stability and a smooth surface finish. They are widely used in construction and industrial applications due to their strength, versatility, and cost-effectiveness.

1. 07
   Slitting

   The levelled steel coils are processed through high-precision slitting machines where they are cut longitudinally into specific widths according to the required pipe and tube dimensions. The slitting process is carried out with strict dimensional tolerances to ensure uniform strip width and edge quality. Accurate slitting contributes significantly to proper tube formation, welding consistency, and overall product quality in subsequent manufacturing stages.

2. 08
   Tube Mill

   In the tube mill section, slit steel strips are gradually formed into round, square, or rectangular tubular shapes using advanced forming rolls and automated machinery. The open edges of the formed sections are welded continuously using the Electric Resistance Welding (ERW) process, which produces strong, uniform, and reliable weld joints. The tube mill operation is carefully controlled to maintain dimensional accuracy, structural integrity, smooth weld finish, and superior mechanical performance of the finished pipes and tubes.

3. 09
   Hydro Testing

   After tube formation, the manufactured pipes undergo hydrostatic pressure testing to verify their strength, leak-proof performance, and pressure-bearing capability. During this process, the tubes are filled with water under controlled high pressure to detect any leakage, weakness, or manufacturing defects. Hydro testing ensures compliance with industrial safety standards and guarantees reliable product performance under operating conditions.

4. 16
   Finishing & Packaging

   The finished pipes and tubes are carefully bundled, packed, labeled, and secured using suitable packaging methods to prevent physical damage, moisture exposure, and handling defects during storage and transportation. Proper packaging ensures safe delivery, efficient inventory management, and product protection throughout the supply chain until final dispatch to customers.