Product Name: HRB400E Grade Hot Rolled Ribbed Seismic Rebar

Overview

HRB400E is a hot-rolled ribbed steel bar produced according to the Chinese standard (GB/T 1499.2), where the "E" denotes its seismic (earthquake-resistant) properties. It is the most widely used high-strength seismic rebar in the Chinese market. Through micro-alloying and controlled rolling/cooling technologies, it achieves high strength while maintaining superior ductility, a high yield-to-tensile ratio, and good weldability, making it the preferred choice for constructing earthquake-resistant buildings.

Technical Specifications

Key Advantages

Superior Seismic Safety

High Yield/Tensile Ratio (≥1.25): Ensures a long plastic deformation phase from initial yielding to final fracture, preventing sudden brittle collapse during an earthquake and providing crucial time for evacuation.

High Elongation (≥9.0%): Capable of absorbing and dissipating more energy under dynamic loads like earthquakes.

Optimal Balance of Strength & Economy

The 400MPa yield strength allows for effective reduction of steel consumption in structural design, saving 10%-15% compared to lower-grade rebars (e.g., HRB335), offering significant cost efficiency.

Excellent Fabrication Properties

Optimized composition and process ensure good weldability and bendability, meeting the complex requirements of construction sites.

Compliance with Primary Standards

Fully compliant with China's mandatory national standard, making it the approved and preferred material for various civil, industrial, and public buildings, especially in seismic zones.

Typical Applications

Building Structures: Main load-bearing components like beams, slabs, columns, and walls.

Infrastructure Projects: Bridges, tunnels, highways, and railways.

Seismic-resistant Constructions: Lifeline projects with higher seismic requirements, such as schools, hospitals, and emergency command centers.

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