Wind Power Industry

• Material Selection: Manufactured from Grade 10.9 / 12.9 high-strength alloy structural steel and weathering steel, with quenched and tempered heat treatment and enhanced weathering processing. Tensile strength ≥ 1040MPa, yield strength ≥ 940MPa, with excellent impact toughness. These bolts withstand high-frequency wind-induced vibration, startup-shutdown impact, and eliminate risks of fracture, deformation, and loosening. They adapt to long-term cyclic loading of wind turbines and ensure reliable fastening performance.
• Core Advantages: Featuring high strength, superior toughness, fatigue resistance, and impact resistance, these bolts are ideal for critical load-bearing parts such as nacelle bases, tower connections, and hub main shafts. They sustain long-term cyclic wind loads, meet strict anti-vibration requirements, and maintain stability without loosening or breakage during extended operation, effectively reducing maintenance frequency and improving equipment reliability.
• Common Specifications: High-strength hex bolts, anti-vibration flange bolts, large-diameter tower bolts, and blade connection bolts. Custom sizes, thread pitches, and lengths are available in accordance with OEM standards (GB, ISO, DIN, and wind power-specific specifications). Customized products adapt to various load conditions, balancing easy installation and fastening stability for diverse wind power applications.

• Material Selection: Designed to pair with high-strength anti-vibration bolts, these nuts are made of Grade 8 / 10 weather-resistant alloy steel and 316L stainless steel, with strength precisely matched to bolts. They deliver outstanding weatherability, preventing thread stripping, cracking, and seizing caused by uneven stress and environmental corrosion, even in harsh outdoor and offshore environments with high salt, high humidity, and extreme temperature fluctuations.
• Core Advantages: Certified for both weather resistance and anti-vibration performance, with integrated multi-level locking structures (high-strength nylon insert, serrated anti-slip design, enlarged anti-slip flange). They effectively resist high-frequency wind vibration and provide excellent outdoor corrosion protection, avoiding loosening and rust seizing during operation. Nuts and bolts form a coordinated, high-performance fastening system.
• Common Specifications: Hex anti-vibration lock nuts, flange anti-vibration nuts, tower lock nuts, and self-locking weather-resistant nuts. They accurately match various wind power-specific bolts and adapt to different assembly spaces and load requirements in nacelles, towers, foundations, and other key components.

To address long-term exposure to outdoor elements (high temperature, cold, rain, salt spray, sandstorms) and severe offshore high-salt, high-humidity environments, we apply multi-layer weather-resistant coatings to ensure long-term performance without rust, seizing, or failure, supporting stable and durable operation:

• Premium Weather Resistance: Dacromet / Geomet + sealing coating. Salt spray resistance exceeds 1500 hours, with no risk of hydrogen embrittlement and operating temperature range from -40℃ to 120℃. Suitable for offshore wind farms and high-corrosion onshore areas, delivering superior salt spray, moisture, and sandstorm resistance to extend service life.
• Standard Weather Resistance: Hot-dip galvanizing + passivation. Salt spray resistance reaches 800–1200 hours, with excellent temperature and sand resistance at a controlled cost. Ideal for mountain and plain onshore wind applications, resisting temperature changes and sand erosion.
• Special Weather Resistance: Stainless steel passivation + Teflon coating. Combines weatherability, high-temperature resistance, and anti-blocking performance. Suitable for internal nacelle components and blade connections, withstanding high operating temperatures and preventing rust seizing.

Products pass specialized anti-vibration testing to withstand high-frequency wind vibration, startup-shock impact, and cyclic loading. The bolt-nut locking system eliminates loosening and fracture risks, supporting long-term stable operation and reducing failure rates.

Custom multi-layer weather-resistant solutions tailored for onshore and offshore wind conditions provide exceptional salt spray, temperature, and sand resistance. Products remain corrosion-free outdoors, prolonging service life and lowering maintenance costs.

Fully compatible with all onshore and offshore wind turbine models. Customizable per OEM drawings and standards to fit core components. Compliant with GB, DIN, ANSI, and international norms, supporting global wind power procurement.

Full-process quality control covering raw material inspection, dimensional accuracy, mechanical performance, weather resistance, and anti-vibration testing. Third-party reports from SGS, BV are available. Products meet ISO/TS 16949 and wind power industry specifications with full quality traceability.

Engineered for convenient on-site installation and later disassembly. Precision threads and user-friendly locking structures reduce installation and maintenance time, improving efficiency and cutting labor costs.