Haihao Group recently completed the delivery of EN 10219 S355J2H square and rectangular hollow sections for a Russian customer engaged in structural and fabrication projects. The shipment covered a wide range of sizes with 6-meter fixed lengths, manufactured in accordance with EN 10219 cold-formed structural hollow section standards, ensuring consistent quality and reliable mechanical performance.

These S355J2H hollow sections, equivalent to Q355B, are widely used in steel structures, machinery frames, industrial buildings, and infrastructure applications where strength, weldability, and dimensional accuracy are critical.

S355J2H structural hollow sections ready for export

Product Scope and Specifications

The order included both square hollow sections (SHS) and rectangular hollow sections (RHS), produced mainly by high-frequency welded forming, with precise dimensional control.

Key supplied sizes include:

• Square hollow section 20×20×2 mm
• Rectangular hollow section 30×25×2 mm
• Rectangular hollow section 40×25×2 mm
• Rectangular hollow section 50×30×2 mm
• Rectangular hollow section 60×40×3 mm
• Rectangular hollow section 40×30×3 mm
• Rectangular hollow section 50×30×3 mm
• Rectangular hollow section 60×40×4 mm

Standard length: 6 meters
Material grade: EN 10219 S355J2H (Q355B equivalent)

All hollow sections were delivered with clean surfaces, uniform weld seams, and straightness suitable for direct fabrication.

Material Performance: EN 10219 S355J2H

EN 10219 S355J2H is a non-alloy structural steel designed for cold-formed hollow sections. It offers an excellent balance between strength, toughness, and weldability, making it ideal for demanding construction environments.

Typical chemical composition limits (%):

• Carbon (C): ≤ 0.22
• Silicon (Si): ≤ 0.55
• Manganese (Mn): ≤ 1.60
• Phosphorus (P): ≤ 0.030
• Sulfur (S): ≤ 0.030
• Carbon Equivalent (CEV): ≤ 0.45%

This controlled chemistry supports stable welding performance and reliable mechanical properties, even in low-temperature service conditions commonly required in Russia and Eastern Europe.

Applications in Russian Projects

The supplied EN 10219 S355J2H rectangular and square hollow sections are suitable for:

• Steel structures and building frames
• Industrial equipment and machinery supports
• Warehouses and logistics facilities
• Agricultural and energy-related steel constructions
• Fabricated components requiring precise geometry

Thanks to the consistent wall thickness and dimensional accuracy, these hollow sections reduce fabrication time and improve overall project efficiency.

Quality Control and Export Experience

Haihao Group applies strict inspection procedures throughout production, including:

• Dimensional and tolerance checks
• Weld seam visual inspection
• Chemical composition verification
• Mechanical property control

With extensive experience in exporting hollow sections to Russia and CIS markets, Haihao Group ensures compliance with international standards, secure packaging, and reliable delivery schedules.

Why Choose Haihao Group

• Proven supplier of EN 10219 S355J2H hollow sections
• Stable quality equivalent to Q355B
• Wide size range for square and rectangular tubes
• Strong experience in Russian and international projects
• Professional export packaging and documentation

Haihao Group remains committed to providing cost-effective, standards-compliant structural steel solutions for global customers.