Ningbo Gangtong Zheli Fasteners: Over 20 Years of Professional Manufacturing, Empowering Global Fastener Supply Chain

1. Company Development & Factory Scale 

Founded in 2001, Ningbo Gangtong Zheli Fasteners has been deeply engaged in the fastener industry for more than 20 years, integrating R&D, production, inspection and export into one integrated industrial base.

Core Scale Advantages 

Modern standard factory covering 15,000 square meters

Complete automated production lines for forging, threading, heat treatment and surface treatment

Monthly stable production capacity up to 2,000 tons

Independent inspection laboratory with full set of testing equipment

Mature warehousing and logistics system to support bulk orders and spot supply

After years of steady development, the company has completed standardized workshop upgrading, digital production management and full-process quality control, realizing large-scale production while maintaining stable product consistency.

2. Complete Product System & Standard Coverage 

GTZL Fasteners focuses on global standard fasteners, covering mainstream international standards such as DIN, ISO, EN, ASTM, ANSI. The product line covers full categories to realize one-stop purchasing for global customers.

Main Product Range 

Hex bolts: DIN 931, DIN 933, DIN 6914 high-strength structural bolts

Nuts: DIN 934, DIN 6915 heavy hex nuts, lock nuts

Washers: DIN 125, DIN 127, DIN 6916, ASTM F436 hardened washers

Threaded rods: DIN 975 full thread studs in carbon steel and stainless steel

Custom non-standard fasteners and special shaped parts

Product Grade & Material Table

3. Strict Quality Control & Certification System 

In the global fastener market, stable quality and standard compliance are the core competitiveness of suppliers. GTZL Fasteners implements full-process quality management from raw material incoming inspection to finished product delivery.

Quality Control Highlights 

Raw material component analysis and batch sampling inspection

Online monitoring of heat treatment to ensure mechanical properties

Dimensional full inspection and thread precision testing

Hardness, tensile strength and load resistance mechanical test

All products comply with ISO 898, DIN and EN industrial standards

Standardized production and rigorous testing make products fully adapt to European, American, Australian and Middle East engineering project acceptance standards.

4. Global Market Layout & Service Advantages 

Adhering to the international market strategy, the company has established long-term stable cooperative relations with distributors, engineering contractors and manufacturing factories in many countries.

Global Service Strength 

Export to Europe, North America, Australia, Middle East, Southeast Asia and other regions

Support OEM & ODM customization, special drawings and non-standard sizes

Professional foreign trade team with 24-hour inquiry response

Flexible MOQ: both small batch trial orders and large bulk orders are acceptable

Stable delivery cycle and professional export document support

5. Future Development Layout 

Facing the changing global supply chain and growing demand for high-end fasteners, GTZL Fasteners will continue to invest in intelligent production upgrading, green environmental protection production and new material R&D. Keep optimizing product structure, expand high-strength and corrosion-resistant product series, and provide more professional, efficient and cost-effective one-stop fastening solutions for global customers.

Conclusion 

With 20 years of manufacturing accumulation, complete product system, strict quality control and global market service capability, Ningbo Gangtong Zheli Fasteners has become a reliable Chinese fastener manufacturing and export brand. In the future, the company will continue to uphold quality-oriented and customer-centric philosophy, continuously empower global engineering construction, machinery manufacturing and infrastructure projects, and consolidate its position in the global fastener supply chain.