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Ningbo Gangtong Zheli Fasteners Co., Ltd is a leading Chinese manufacturer of high-strength standard fasteners. With over two decades of experience, we deliver reliable, durable, and precision-engineered bolts, nuts, washers, and more to clients worldwide.
Ningbo Gangtong Zheli Fasteners Co., Ltd is a manufacturer in China which mainly produces high-strength standard fasteners. Founded in 2001, the company has experienced rapid growth over the past two decades.
Our factory is located in the Ningbo Zhenhai Chemical Industrial Area, covering approximately 15,000 square meters, with a monthly production capacity of 2,000 tons. Our headquarters and foreign sales department are based at the Ningbo Jiangdong Eastern Business Centre.
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We specialize in manufacturing a wide range of high-strength fasteners used across construction, automotive, energy, and industrial sectors. All products meet international standards and are rigorously tested for quality.
Available in carbon steel, alloy steel, and stainless steel (SS304/SS316). Ideal for structural and heavy-duty applications.
Precision-engineered hex nuts, lock nuts, and flange nuts for secure fastening in demanding environments.
Fully threaded rods in various lengths and diameters, suitable for anchoring, suspension, and structural connections.
Flat, spring, and locking washers designed to distribute load and prevent loosening under vibration.
Fine-thread and coarse-thread machine screws for precise assembly in mechanical and electrical systems.
Corrosion-resistant bolts, nuts, and washers made from SS304 and SS316 for marine, chemical, and food industries.
J-bolts, L-bolts, and double-end rods for concrete and foundation anchoring in construction projects.
Complete bolt-nut-washer kits for pipeline flanges, pressure vessels, and industrial equipment.
We combine advanced manufacturing, strict quality control, and global logistics to deliver fasteners you can trust.
ISO-certified processes and 100% batch testing ensure every fastener meets international standards.
2,000-ton monthly capacity and strategic port access enable quick turnaround and global shipping.
We offer OEM/ODM services, custom sizes, coatings, and packaging to meet your exact needs.
Dedicated sales team available via phone, WhatsApp, and email for technical and logistics support.
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We manufacture fasteners in carbon steel, alloy steel, stainless steel (SS304, SS316), and customized materials upon request.
Yes, we provide material test certificates (MTC), inspection reports, and can comply with ISO, DIN, ANSI, and other international standards.
Absolutely. We offer OEM and ODM services, including custom dimensions, threading, coatings, and packaging.
Our MOQ varies by product but is typically flexible. Contact us for specific details based on your requirements.
We have an in-house quality lab that performs tensile testing, hardness testing, salt spray testing, and dimensional inspection on every batch.
For inquiries, quotes, or technical support, reach out to our sales team.
0086-18969835677
info@gtzl-cn.com
0086-574-86657066
Room C069 (4-1) (4-2), No.003 Building, Zhongshan East Road No.1083, Yinzhou District, Ningbo, Zhejiang, China
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