Welcome to HAILIANG
Jiangsu Hailiang Dongfang Import and Export Co., Ltd. is a professional fastener manufacturer, supplier, and exporter with over 20 years of experience. We specialize in high-quality fastener products, including a comprehensive range of bolts, nuts, screws, washers, anchors, and rivets. As an experienced fastener factory in China, we offer competitive prices, fast delivery, and strict adherence to ISO standards. Together with our Hong Kong branch, HAILIANG GROUP LIMITED, our strong global network and commitment to quality make us a trusted partner for clients worldwide.
Competitive Price
Deliver Faster
Quality Promise
Third-Party Inspection
30+
Factories
1-on-1
Service
24/7
Available
100+
Exporting Countries
Our Product Categories
Bolt
Bolts are threaded fasteners with various head types and materials, used across industries. Hailiang offers stainless & carbon steel bolts, M3–M100, with custom coatings and full traceability.
Nut
Nuts are internally threaded fasteners in various styles and materials, used with bolts across industries. Hailiang stocks M3–M100 sizes, with multiple coatings and standards, ensuring durability and corrosion resistance.
Screw
Screws securely join materials across industries, with types like machine, wood, self-tapping, and concrete. Available in steel, stainless, brass — with coatings and standards for strength, corrosion resistance, and precise fit.
Our Blog
Metric vs. Imperial Screws: Cross-Referencing Standards (ISO, DIN, ANSI) for Global Sourcing
December 10, 2025
In global manufacturing and procurement, one of the most frequent — yet avoidable — causes of delays, rework, and inventory waste is fastener mismatch due to metric-imperial confusion. Whether you’re sourcing from Asia, Europe, or North America, understanding how to cross-reference ISO, DIN, ANSI, and ASME standards is no longer optional — it’s a core
The Role of Surface Coatings in Screw Performance: Zinc, Dacromet, Geomet & More
July 23, 2024
In industrial fastening applications, surface coating is not an afterthought — it’s a critical engineering specification. The right coating enhances corrosion resistance, reduces friction during installation, prevents galvanic corrosion, and ensures long-term structural integrity under thermal, chemical, or mechanical stress. Failure to specify appropriate coatings can lead to premature failure, safety hazards, and significant lifecycle
Hex Bolt vs. Heavy Hex Bolt: How to Choose the Right One Based on Load Requirements
March 9, 2023
Why Bolt Selection Starts With Understanding the Difference Hex bolts and heavy hex bolts may look similar at a glance — both feature six-sided heads and external threading — but their structural differences significantly impact load capacity, fatigue resistance, and suitability for specific applications. Choosing the wrong type can lead to joint failure, maintenance overload,
