Haihao Group has successfully completed the delivery of hot-dip galvanized threaded rods and heavy hex nuts for a customer in Côte d’Ivoire, supporting the construction of a large-scale industrial pipeline system. The supplied fasteners comply with ASTM A193 Grade B7 and ASTM A194 Grade 2H standards, ensuring high tensile strength, excellent corrosion resistance, and long service life in demanding environments.

ASTM A193 B7 hot-dip galvanized threaded rods ready for export to Côte d’Ivoire
Product Details
1. Threaded Rods (Hot-Dip Galvanized)
- Material: ASTM A193 Grade B7
- Size Range: 1/2″ to 1-3/8″
- Length: 1 meter each
- Surface Finish: Hot-dip galvanized
Each threaded rod is precision manufactured from high-strength alloy steel and then hot-dip galvanized to enhance resistance to moisture, salt, and chemical exposure. The ASTM A193 B7 standard ensures exceptional performance under high pressure and high temperature conditions, making them ideal for pipeline, flange, and structural bolting.
2. Heavy Hex Nuts (Hot-Dip Galvanized)
- Material: ASTM A194 Grade 2H
- Sizes: Matching threaded rods from 1/2″ to 1-3/8″
- Finish: Hot-dip galvanized
The A194 2H heavy hex nuts are designed for secure and durable connections, particularly in industrial bolting assemblies. The hot-dip galvanizing process provides enhanced surface protection, ensuring consistent torque performance and preventing rust during long-term exposure.
Manufacturing and Quality Control
All fasteners were produced in compliance with international standards and passed rigorous quality inspections, including:
- Dimensional and thread accuracy testing
- Zinc coating thickness and adhesion testing
- Tensile strength verification
- Visual and mechanical inspection before shipment
Haihao Group’s ISO 9001-certified production system guarantees that each product meets or exceeds customer specifications. The company also provides custom marking, packaging, and export documentation to ensure smooth delivery to overseas destinations.
Application and Advantages
The hot-dip galvanized threaded rods and nuts supplied to Côte d’Ivoire will be used in pipeline flanged joints and support structures exposed to outdoor and coastal environments. The combination of ASTM A193 B7 steel and A194 2H nuts offers:
- Superior mechanical strength under pressure
- Corrosion resistance for humid and marine conditions
- Long-lasting stability and safety in bolted joints
- Compatibility with a wide range of industrial flange systems
This delivery further reinforces Haihao Group’s reputation as a trusted global supplier of high-quality pipeline fasteners and fittings.
About Haihao Group
Haihao Group is a leading manufacturer and supplier of flanges, fittings, gaskets, and fasteners for pipeline systems. With decades of experience serving customers across Asia, Africa, the Middle East, and Europe, Haihao provides comprehensive one-stop pipeline solutions, combining precision manufacturing, quality assurance, and global logistics support.
Whether for oil & gas, petrochemical, or infrastructure projects, Haihao Group is dedicated to delivering reliable products that meet international standards and project-specific requirements.

