Hangchi Longitudinal Seismic Bracing is used to withstand and limit displacements generated in the longitudinal direction of a system. It effectively distributes and transfers loads under external forces, enhancing overall structural stability. The product features a clear load-bearing logic and rapid response, providing reliable restraint while allowing necessary displacement under normal operating conditions.

Product Composition
Longitudinal seismic bracing includes:
● Anchoring components: Expansion bolt assemblies for connection to the building structure
● Reinforcement hangers: C-channel steel using cold-formed technology
● Seismic connection components: Hinged connection devices with locking function
● Seismic bracing: Adjustable angle galvanized steel pipe assemblies (installation angle range 30°-45°)
Product Performance and Advantages
- Material Guarantee: Longitudinal seismic bracing uses high-quality Q235B carbon steel;
- Surface Treatment: Main material is hot-dip galvanized to a thickness of 65μm or higher;
- Testing and Certification: ISO9001-2015 quality system certification, national seismic bracing testing certification, 180-minute fire resistance test certification, etc.;
- Comprehensive detailed design drawings and on-site technical guidance services;
- Industrialized customized products, simple and easy-to-use design, ensuring safety.
Application Areas
Piping Systems
Ensures the safety of fire protection, water supply and drainage (≥DN65), and gas pipelines.
Duct Systems
Protects rectangular (≥0.38㎡) and circular (≥0.7m diameter) air conditioning and smoke exhaust ducts.
Electrical Systems
Secures cable trays (cross-section ≥300mm² or weight ≥150N/m) and busbars.
Heavy Equipment
Supports air conditioning units, water pumps, etc., weighing ≥1.8kN.
Why Choose Us
Product Compliance Certainty: We provide complete support systems with national-level type inspection reports, ensuring compliance with mainstream domestic and international seismic codes.
Technical Collaboration Certainty: We provide calculation-based seismic design technical support and can leverage the local supply chain for stable product supply and rapid customization.
Delivery Service Certainty: We have extensive experience in international trade, providing professional export packaging, customs clearance documents, and full logistics support to ensure timely and safe delivery of products.

FAQ
Q: When is installation mandatory?
A: According to the national mandatory standard GB 50981, seismic design and installation are mandatory for specific specifications of fire protection pipes, ducts (such as rectangular ≥0.38㎡), cable trays (such as weight ≥150N/m), and heavy equipment (≥1.8kN), as specified by the design unit in the drawings.
Q: How to determine the specifications and quantity of supports?
A: This must be determined by a professional engineer based on seismic intensity, equipment weight, and layout of the project location. Standard drawings or experience cannot be directly applied.
Q: Is it the same as a regular support?
A: Completely different. Regular supports bear weight, while seismic supports are specifically designed to resist horizontal seismic forces. The two have different functions and cannot be substituted for each other; they must be used together in the system.
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