Views: 0 Author: Site Editor Publish Time: 2026-05-29 Origin: Site
Gangtong Zheli Fastener (GTZL) is a leading Chinese manufacturer and exporter of industrial fasteners, with over 15 years of dedicated experience in designing, producing, and supplying high-quality bolts, nuts, screws, washers, and custom fastening solutions to clients across 80+ countries worldwide. Headquartered in Ningbo, Zhejiang—China’s key manufacturing and logistics hub—our company integrates R&D, precision production, strict quality control, and global distribution to serve diverse industries including construction, automotive, renewable energy, heavy machinery, and infrastructure.
As a customer-centric enterprise, GTZL adheres strictly to the EEAT (Experience, Expertise, Authoritativeness, Trustworthiness) framework in all operations. Our decades-long industry experience, professional engineering team, authoritative product certifications, and transparent business practices have made us a trusted partner for global buyers seeking reliable, cost-effective, and high-performance fastener products.
Founded in 2010, Gangtong Zheli Fastener has grown from a small workshop to a modern manufacturing enterprise with 3 smart production bases and a 20,000㎡ factory area. Over the past 15 years, we have accumulated profound first-hand experience in fastener production, material selection, quality management, and international trade, enabling us to deeply understand the unique needs and pain points of global clients.
Our production team consists of 200+ skilled workers and 30+ senior engineers, each with an average of 10+ years of experience in the fastener industry. This extensive experience allows us to efficiently handle complex orders, custom requirements, and strict quality standards—from standard fasteners to non-standard, high-precision components for extreme environments (e.g., high temperature, corrosion, heavy load).
At GTZL, expertise is embedded in every link of our production chain, from raw material procurement to finished product delivery.
We invest 5% of annual sales revenue in R&D to develop new products and optimize existing solutions, keeping pace with global industry trends. Our R&D team focuses on:
High-strength fasteners (Grade 8.8, 10.9, 12.9) for heavy machinery and infrastructure;
Corrosion-resistant fasteners (stainless steel 304/316, hot-dip galvanized) for marine and coastal projects;
Custom non-standard fasteners tailored to client drawings and specifications.
To ensure product precision and consistency, we have introduced state-of-the-art production equipment from Germany and Japan, including:
50+ cold forging machines for high-efficiency bolt/nut forming;
30+ CNC machining centers for precision non-standard parts;
Automated heat treatment lines for uniform hardness and mechanical properties;
Intelligent coating lines (zinc plating, hot-dip galvanizing, passivation) for corrosion resistance.
Our smart manufacturing system integrates ERP (Enterprise Resource Planning) and WMS (Warehouse Management System) to automate production scheduling, material tracking, and inventory management, ensuring on-time delivery and production efficiency.
Quality is the lifeline of GTZL, and we implement a full-process quality control system from raw material inspection to finished product testing. All our products comply with major international standards, including ISO, DIN, ANSI, BS, and JIS, and we have obtained CE, RoHS, and ISO 9001 certifications.
Our quality control laboratory is equipped with advanced testing equipment to conduct:
Mechanical property tests (tensile strength, yield strength, hardness, impact resistance);
Corrosion resistance tests (salt spray test, humidity test);
Dimensional accuracy tests (precision micrometers, coordinate measuring machines).
Gangtong Zheli Fastener offers a diverse range of standard and custom fastener products to meet the needs of different industries and applications. Below is a detailed table of our core products, specifications, materials, and applications:
Product Category | Main Specifications | Available Materials | Key Applications |
|---|---|---|---|
Hex Bolts | M6–M64, Grade 4.8/8.8/10.9/12.9 | Carbon steel, alloy steel, stainless steel (304/316) | Construction, bridges, heavy machinery, automotive |
Hex Nuts | M6–M64, Grade 4/8/10/12 | Carbon steel, alloy steel, stainless steel | Matching with hex bolts, industrial assembly |
Machine Screws | M2–M12, Phillips/Slotted drive | Carbon steel, stainless steel, brass | Electronics, appliances, precision machinery |
Self-Tapping Screws | ST2.2–ST6.3, various head types | Carbon steel (zinc-plated), stainless steel | Furniture, construction, metal sheet assembly |
Washers | Flat, spring, lock, Belleville | Carbon steel, stainless steel, copper | Fastener reinforcement, anti-loosening, load distribution |
Anchor Bolts | M12–M64, L-type/J-type/straight-type | Carbon steel (hot-dip galvanized), stainless steel | Building foundations, wind turbines, road infrastructure |
Custom Non-Standard Fasteners | Tailored to client drawings | Carbon steel, alloy steel, stainless steel, aluminum | Special machinery, aerospace, marine, medical equipment |
All our products are customizable in terms of size, material, surface treatment, and packaging to meet specific client requirements. Whether you need standard fasteners for mass production or high-precision custom parts for special projects, GTZL can provide one-stop fastening solutions with reliable quality and competitive pricing.
Gangtong Zheli Fastener has obtained a series of authoritative certifications that recognize our product quality and management system, including:
ISO 9001:2015 Quality Management System Certification;
CE Certification (compliant with EU safety standards);
RoHS Certification (environmental protection);
Member of China Fastener Industry Association (CFIA);
Recognized as a National High-Tech Enterprise for our R&D and innovation capabilities.
These certifications and memberships validate our authoritative position in the Chinese fastener industry and enhance our credibility in the global market.
Over the past 15 years, we have built long-term, stable partnerships with 500+ clients across 80+ countries, including Europe, North America, South America, Southeast Asia, the Middle East, and Africa. Our clients include:
Large construction companies (e.g., China State Construction, Bouygues Construction);
Automotive manufacturers (e.g., Geely, BYD, Volkswagen suppliers);
Renewable energy enterprises (e.g., wind turbine and solar panel manufacturers);
Industrial machinery producers and hardware distributors.
Our client repurchase rate exceeds 85%, a testament to our consistent product quality, reliable delivery, and professional customer service. Many clients have been cooperating with us for 10+ years, and we have become their preferred fastener supplier in China.
Trustworthiness is the foundation of our global business, and we adhere to transparent and honest business practices in all interactions with clients. We provide detailed product specifications, test reports, and certifications for every order, ensuring clients have full visibility into product quality and compliance.
We also maintain open and timely communication with clients throughout the order process—from inquiry and quotation to production, quality inspection, and delivery. Our multilingual sales team (fluent in English, Spanish, French, and Arabic) responds to client inquiries within 24 hours, providing professional technical support and after-sales service.
We understand that on-time delivery is critical for global clients’ production and project schedules. With our 3 smart production bases and strategic logistics partnerships, we can fulfill orders of any volume (from small batches to large-scale bulk orders) with a delivery time of 7–15 days for standard products and 15–30 days for custom products.
We also offer flexible supply chain solutions, including:
OEM/ODM services for custom branding and packaging;
Bulk inventory stocking for regular clients to shorten delivery time;
Door-to-door shipping services via sea, air, or express delivery (DHL, FedEx).
As a responsible enterprise, GTZL is committed to green manufacturing and sustainable development. We have implemented energy-saving and emission-reduction measures in our factories, including:
Using energy-efficient production equipment to reduce power consumption by 30%;
Adopting eco-friendly coating materials to minimize environmental pollution;
Recycling and reusing raw materials to reduce waste.
We also actively participate in social welfare activities, such as donating fastener products to rural infrastructure projects and providing employment opportunities for local residents, contributing to the development of the local community.
Based on our 15+ years of experience, professional expertise, authoritative certifications, and trustworthy service, Gangtong Zheli Fastener offers unique advantages that set us apart from other fastener manufacturers:
Uncompromising Quality: Strict quality control system and international certifications ensure consistent product performance and reliability.
Competitive Pricing: Direct factory sales eliminate intermediate links, offering clients cost-effective products without compromising quality.
Customization Capability: Strong R&D and production teams can meet unique custom requirements for non-standard fasteners.
Global Logistics & On-Time Delivery: Strategic logistics partnerships and smart inventory management ensure fast and reliable delivery worldwide.
Professional Customer Service: Multilingual sales and technical teams provide 24/7 support to solve client problems and ensure a smooth cooperation experience.
As the global fastener industry continues to grow, driven by rapid industrialization, urbanization, and infrastructure development, Gangtong Zheli Fastener is ready to seize new opportunities and meet new challenges. We will continue to uphold our core values of Quality First, Customer Centric, Innovation-Driven, and Sustainable Development, and strive to become a world-class fastener manufacturer and global partner.
We sincerely welcome global buyers, distributors, and project contractors to contact us for inquiries, quotations, and cooperation discussions. Whether you need standard fasteners or custom solutions, GTZL will provide you with high-quality products, competitive prices, and professional services to achieve long-term win-win cooperation.
Contact Us
Company Name: Gangtong Zheli Fastener
Address: Ningbo, Zhejiang Province, China
Email: sales6@gtzl-cn.com
Website: www.topboltmfg.com
Phone: +86 15355199658