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Ningbo Gangtong Zheli Fasteners Co., Ltd. is a leading manufacturer based in China, specializing in high-strength fasteners and a wide range of hardware products. Established in 2001, the company has grown steadily over the years, with its factory located in the Zhenhai Chemical Industrial Area of Ningbo and its headquarters and foreign sales department situated in the Jiangdong Eastern Business Center. The factory spans approximately 15,000 square meters and has a monthly production capacity of 2,000 tons. The company is equipped with an integrated research system, efficient supply chain management, large-scale warehousing, and advanced metal fastener technology, supporting comprehensive procurement and distribution services for MRO-based metal fasteners. Annual sales exceed $15 million.
The product range includes bolts and nuts (both assembled and separate), self-tapping or drilling screws, lag screws, threaded rods or studs, washers, and more, all manufactured from carbon steel and stainless steel. These products are exported globally to North America, Europe, Australia, Russia, Southeast Asia, and the Middle East. They strictly comply with international standards such as DIN, ANSI/IFI, JIS, BS, ISO, and GB, and are widely used in applications like architectural steel structures, bridges, oil pipelines, machinery equipment, furniture, vessels, and railways.
**Product Specifications:**
- **Model No.:** DIN7337
- **Material:** Steel
- **Surface Finishing:** Plain
- **Performance Grades:** A2, A4
- **Finish Options:** Black, Plain, ZP, YZP, BZP, WZP
- **Trade Mark:** NGL
- **Certification:** ISO, GS
- **Customized:** Available
- **Size Range:** 3–6.4 mm
- **Packing Details:** Carton + Pallet
- **Transport Package:** 25 kg per carton, shipped via European pallets
- **Origin:** Ningbo, China
| DEC | Size | Finish | Grade |
|-----------|----------|----------|----------|
| DIN7337 | 3–6.4 mm | Plain | A2, A4 |
**Key Features:**
- **Property Classes:** 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, A2, A4
- **Coating Options:** Natural, ZP, Blackening, HDG, Environmental coating
- **Quality Assurance:** Competitive pricing with high-quality standards
- **Design Flexibility:** Wide variety of designs available
- **Timely Delivery:** Reliable and punctual shipping
- **Secure Packaging:** Strong and protective packaging to ensure safe delivery
As a trusted supplier in the fastener industry, Ningbo Gangtong Zheli Fasteners Co., Ltd. continues to deliver reliable, high-performance solutions tailored to global market demands.