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China Suppliers Threaded Rod
QS Fastener: China Suppliers Threaded Rod
Name: China Suppliers Threaded Rod
Size: M20
Material: ASTM A193 B7M
Length: 60mm
Surface Process: Fluorocarbon Coated,Red Color
Finish: Zinc-Nickel Coated
Standard: ASME B1.13M
Application: Bolts and Nuts are Used in the Construction and Repair of Barbors, Docks and Piers
Size: M20
Material: ASTM A193 B7M
Length: 60mm
Surface Process: Fluorocarbon Coated,Red Color
Finish: Zinc-Nickel Coated
Standard: ASME B1.13M
Application: Bolts and Nuts are Used in the Construction and Repair of Barbors, Docks and Piers
Quantity
China Suppliers Threaded Rod – M20 ASTM A193 B7M with Dual Protection
For critical marine and offshore applications, China Suppliers offer the M20 Threaded Rod manufactured from high-strength alloy steel ASTM A193 B7M, fully compliant with ASME B1.13M standards. This Threaded Rod features a sophisticated dual-layer protective system: an underlying zinc-nickel alloy coating (12–15% Ni) for active rust prevention, and an outer red fluorocarbon coating (PVDF/FEVE resin) that delivers exceptional salt spray resistance. Engineered with a 6g thread accuracy, this Threaded Rod ensures a tight fit with mating nuts, effectively resisting loosening under continuous wave impact and vibration—making it a preferred choice for dock repairs, pier infrastructure, and permanent offshore steel structure connections.
For critical marine and offshore applications, China Suppliers offer the M20 Threaded Rod manufactured from high-strength alloy steel ASTM A193 B7M, fully compliant with ASME B1.13M standards. This Threaded Rod features a sophisticated dual-layer protective system: an underlying zinc-nickel alloy coating (12–15% Ni) for active rust prevention, and an outer red fluorocarbon coating (PVDF/FEVE resin) that delivers exceptional salt spray resistance. Engineered with a 6g thread accuracy, this Threaded Rod ensures a tight fit with mating nuts, effectively resisting loosening under continuous wave impact and vibration—making it a preferred choice for dock repairs, pier infrastructure, and permanent offshore steel structure connections.
Corrosion Protection That Performs
In high-salt, high-humidity environments, corrosion remains the primary failure mode for industrial fasteners. The zinc-nickel base layer on this Threaded Rod provides electrochemical sacrificial protection, withstanding over 1,000 hours in ASTM B117 salt spray tests without red rust at 8–12μm thickness—far outperforming conventional galvanization. The alkaline electroplating process minimizes hydrogen embrittlement risk, critical for high-strength grades (HRC ≥ 22). Meanwhile, the fluorocarbon topcoat acts as a robust chemical barrier, resisting strong acids, alkalis, and UV degradation, with less than 5% chalking after 20 years of outdoor exposure.
In high-salt, high-humidity environments, corrosion remains the primary failure mode for industrial fasteners. The zinc-nickel base layer on this Threaded Rod provides electrochemical sacrificial protection, withstanding over 1,000 hours in ASTM B117 salt spray tests without red rust at 8–12μm thickness—far outperforming conventional galvanization. The alkaline electroplating process minimizes hydrogen embrittlement risk, critical for high-strength grades (HRC ≥ 22). Meanwhile, the fluorocarbon topcoat acts as a robust chemical barrier, resisting strong acids, alkalis, and UV degradation, with less than 5% chalking after 20 years of outdoor exposure.
Synergistic Dual-Layer Performance
When combined, the two layers work sequentially: the fluorocarbon coating blocks moisture and chloride ions, while the zinc-nickel layer continues to protect any exposed substrate. In rigorous salt spray testing, this dual-protected Threaded Rod achieves over 3,000 hours without red rust—a 300% service life extension over standard coated products. Real-world applications include offshore wind turbine platforms and cross-sea bridges, where this Threaded Rod has demonstrated zero corrosion after a decade of service, meeting C5-grade corrosion certification requirements.
When combined, the two layers work sequentially: the fluorocarbon coating blocks moisture and chloride ions, while the zinc-nickel layer continues to protect any exposed substrate. In rigorous salt spray testing, this dual-protected Threaded Rod achieves over 3,000 hours without red rust—a 300% service life extension over standard coated products. Real-world applications include offshore wind turbine platforms and cross-sea bridges, where this Threaded Rod has demonstrated zero corrosion after a decade of service, meeting C5-grade corrosion certification requirements.
Practical Maintenance Tips
For installation, apply fluorosilicone grease to the Threaded Rod threads and avoid chloride-containing lubricants. Inspect the coating integrity every five years, with local touch-ups for any mechanical damage.
For installation, apply fluorosilicone grease to the Threaded Rod threads and avoid chloride-containing lubricants. Inspect the coating integrity every five years, with local touch-ups for any mechanical damage.
In summary, for engineers specifying fasteners in aggressive coastal or chemical environments, this M20 Threaded Rod from experienced China Suppliers delivers proven reliability, scientific corrosion engineering, and long-term cost efficiency—effectively breaking the corrosion-loosening failure cycle in bolt systems.
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