News and Events

Driven by global new energy vehicle, offshore wind and marine engineering expansion, DIN985 nylon insert self-locking nut market maintains steady 6.3% annual compound growth in 2026. NINGBO TOPBOLT METALWORKS CO.,LTD. launches upgraded intelligent cold forming and nylon pressing workshop, optimizes 304/A2-70、316/A4-80 stainless & high-grade carbon steel production, securing bulk long-term orders from European auto OEMs and Southeast Asian coastal new energy contractors, further lifting China-made anti-vibration fastener global penetration rate.

Driven by global offshore wind, shipbuilding and coastal infrastructure construction, the global marine fastener market hits USD 2.8 billion in 2026. Updated IMO and IACS industry specifications tighten corrosion and mechanical requirements for marine fasteners, further clarifying the applicable boundary between 304(A2) and 316(A4) stainless steel fasteners per ISO 3506 & ASTM A240 standards. China’s stainless fastener export achieves 18.2% year-on-year growth in Jan-Apr 2026; 316 stainless products stand out against EU CBAM policy cost pressure and become preferred materials for high-corrosion marine projects including offshore platforms and seaside engineering. This article analyzes downstream demand structure, common procurement mistakes and professional material selection advice to help global buyers reasonably configure 304 and 316 fasteners and control full-cycle project costs.

This authoritative selection guide compares the material composition, mechanical properties, corrosion resistance and application scenarios of 304 (A2) and 316 (A4) stainless steel fasteners based on ISO, DIN and ASTM international standards. It focuses on analyzing the performance differences of the two materials in marine, coastal salt spray and harsh corrosive environments, summarizes accurate selection rules and project life cycle cost analysis, and solves the common selection confusion of global engineers and procurement buyers, providing professional and reliable fastening solutions for industrial and marine engineering projects.

With the global manufacturing industry accelerating towards low-carbon, environmental protection and sustainable development, green production and eco-friendly product standards have become core assessment indicators for international suppliers. More and more overseas buyers, engineering contractors and brand manufacturers prioritize low-carbon, pollution-free and environmentally compliant fastener products in procurement projects. To adapt to the global green industrial trend and meet the high-standard environmental access requirements of Europe, North America and other mainstream markets, our factory has comprehensively upgraded its green manufacturing system in 2026, optimizing production processes, eliminating high-pollution and high-energy-consuming links, and fully realizing low-emission, high-efficiency and environmentally friendly fastener production, further enhancing the global market competitiveness of our products.

This official news from Gangtong Zheli Fastener introduces our company’s development strength, product lines, quality management and global service capabilities. With over 15 years of professional experience in the fastener industry, we are a leading manufacturer and exporter based in Ningbo, China, integrating R&D, production, quality inspection and global distribution. Our product range covers hex bolts, nuts, screws, washers, anchor bolts and customized non-standard fasteners, all compliant with ISO, DIN, ANSI and other international standards. Equipped with advanced production and testing equipment, we implement full-process quality control and have obtained ISO 9001, CE and RoHS certifications. We serve clients across more than 80 countries, supplying high-quality fasteners for construction, automotive, new energy, heavy machinery and other industries. Adhering to the principles of experience, expertise, authoritativeness and trustworthiness, we provide OEM, ODM and one-stop custo