English
Français 
Rebar Chair, also known as bar support, rebar spacer, or concrete steel chair, is a prefabricated reinforcing element used to support upper layers of rebar in double-layered slabs, beams, or foundations. Shaped like a bench or inverted 'U', the rebar chair maintains proper spacing between top and bottom rebar mats to ensure design-specified concrete cover and load distribution. Yoshine manufactures rebar chairs from plain round steel bars (HPB300) or deformed bars (HRB400), compliant with GB1499.2, BS4449, and ASTM A615 standards. They are essential in structural slabs, precast panels, pile caps, and reinforced concrete flooring systems.
Bar Diameter (mm) | Height (mm) | Chair Span (mm) | Steel Grade |
6–8 | 70–150 | 100–300 | HPB300 |
8–10 | 100–250 | 150–350 | HRB400 |
10–12 | 150–300 | 200–400 | HRB400 |
Custom | Customizable | Customizable | As Required |
Yoshine provides complete bar chair fabrication services including bending, cutting, welding (for complex supports), and labeling. We customize based on your drawings or reinforcement schedules and ensure consistent height, shape, and load-bearing strength. We also offer grouped bundling and packaging for easy on-site installation and inventory control.
• Ensures proper elevation of top-layer reinforcement.
• Factory-shaped for uniformity and stability under load.
• Available in multiple heights, spans, and configurations.
• Made from HPB300 or HRB400 with anti-rust surface treatment.
• Compliant with GB1499.2, BS4449, ASTM A615, and ISO 9001.
Yoshine manufactures rebar chairs under ISO 9001 quality control systems, ensuring precise height, support span, and structural strength. We use calibrated bending equipment and qualified materials tested for chemical and mechanical properties. Our products meet the requirements of GB1499.2 (China), BS4449 (UK), and ASTM A615 (USA), suitable for international reinforced concrete applications.
Maintains Structural Spacing
Rebar chairs ensure consistent spacing between steel layers, guaranteeing proper concrete cover and reinforcement positioning.
Reduces On-Site Labor
Factory-formed supports eliminate the need for temporary wood blocks or improvised spacers, saving time and improving accuracy.
Durable and Stable Under Load
Designed to withstand the weight of upper rebars and fresh concrete without collapsing or deforming during pouring.
Customizable to Project Needs
Can be fabricated in varying heights and spans to match slab thickness, bar layout, and support requirements.
Export-Ready with Certification
All rebar chairs come with mill certificates, quality documentation, and packaging suited for export worldwide.
Region / Standard | Equivalent Grade / Name |
China (GB1499.2) | Rebar Chair / Bar Support (HPB300 / HRB400) |
USA (ASTM A615) | Steel Chair / Bar Chair / Spacer |
UK (BS 4449) | Reinforcement Support Bar |
International Naming | Steel Rebar Chair / Concrete Chair / Bar Spacer / Iron Horse |
Rebar Chair, also known as bar support, rebar spacer, or concrete steel chair, is a prefabricated reinforcing element used to support upper layers of rebar in double-layered slabs, beams, or foundations. Shaped like a bench or inverted 'U', the rebar chair maintains proper spacing between top and bottom rebar mats to ensure design-specified concrete cover and load distribution. Yoshine manufactures rebar chairs from plain round steel bars (HPB300) or deformed bars (HRB400), compliant with GB1499.2, BS4449, and ASTM A615 standards. They are essential in structural slabs, precast panels, pile caps, and reinforced concrete flooring systems.
Used for tying rebar in reinforced concrete works
Mechanical Connector used for efficiently connect rebars in reinforced concrete structures
Jinshi Museum, No.8 Qinling Rd, Qingdao China
Copyright © 2025 Qingdao Yoshine Metal Co., Ltd. All Rights Reserved.
Powered by HiCheng
