Ningbo Zhongli Bolt Manufacturing Co., Ltd.: Expertise in High-Strength Fasteners   

Company Profile 

Established in 2003 and based in Ningbo’s Zhenhai District, Ningbo Zhongli Bolt Manufacturing Co., Ltd. specializes in high-strength fasteners for global industrial applications. With a 10,000 m² production base, an annual capacity of 8,000–10,000 tons, and ISO 9001:2000 certification since 2007, the company combines scale with stringent quality control. Its products are distributed across China and exported to Europe, the Americas, the Middle East, Southeast Asia, and Africa. 

 Core Product Portfolio 

1. Standard Fasteners:

   - Hex Bolts: Produced to international standards, including GB5782/GB5783 (China), DIN931/DIN933 (Germany), A325/A307 (USA), and ISO4014/ISO4017. Sizes range from M8 to M48, with unlimited lengths. 

   - Structural Bolts: High-strength hex bolts for steel structures (e.g., GB1228, DIN6914, A325) and twist-shear-type bolts (GB3632). 

   - Nuts: DIN934 hex nuts. 

2. Strength Grades: 8.8, 10.9, and 12.9 grades, plus B7/B16 alloy steel bolts for extreme conditions.

 Customization Capabilities 

The company offers tailored solutions for niche demands: 

- Non-Standard Bolts: Custom geometries for automotive, machinery, and special equipment. 

- Threaded Rods: B7 rods for high-temperature/pressure applications. 

- Material Flexibility: Alloy steel, corrosion-resistant finishes, and specialty coatings upon request. 

 Production and Quality Assurance 

- Advanced Equipment: Fully automated multi-station cold heading machines, hot forging systems, and heat-treatment facilities ensure precision and efficiency. 

- Inventory Management: Large stocks of popular items (e.g., Gr.10.9/12.9 M8–M36 hex bolts) enable rapid delivery. 

- Quality Philosophy: Adherence to "quality first, credible operation" principles, backed by full-process testing equipment. 

 Global Reach and Compliance 

Products meet diverse regional standards (e.g., Australian AS/NZS, Japanese JIS) and cater to construction, automotive, and energy sectors. Key exports target the U.S., UK, Australia, and the EU. 

Ningbo Zhongli leverages 20+ years of expertise to deliver reliable, high-tensile fasteners—blending standardized excellence with bespoke innovation for global industrial challenges.

We often participate in several domestic and international exhibitions to expand our business.

1. Fastener Expo Shanghai (FES) (Jun 17–19, 2025)

    Asia’s largest fastener trade fair (70,000㎡, 1,200+ exhibitors). Highlights automotive high-tensile fasteners, robotics joints (<0.01mm precision), and EU carbon-tariff-compliant green tech. Part of the "global top 3" fastener expos. 

3. IFS China Expo (May 22–24, 2025, Shanghai)

    Focuses on aerospace-grade titanium fasteners, EV connectors, and wind-energy solutions. Features 1,000+ brands like AFT/AFMC and SPIROL, with dedicated zones for testing, heat treatment, and digital solutions. 

International Exhibitions

2. Fastener Fair Stuttgart (Mar 25–27, 2025, Germany)

    Europe’s premier event, co-listed among the "global top 3." Covers high-strength industrial fasteners, automotive innovations, and advanced production tech. Attracts global manufacturers like Wafios and Sacma. 

3. FastTec Moscow (Oct 21–23, 2025, Russia)

    Key hub for Eastern Europe, featuring construction, automotive, and aerospace high-strength fasteners. Runs concurrently with major industrial expos like NDT and PVCExpo.