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City, Country – Date – Gangtong Zheli Fasteners, a professional manufacturer and global exporter of industrial fasteners, announces the full upgrade of its surface treatment technology and production lines. This technical iteration focuses on enhancing anti-corrosion performance, surface uniformity and environmental compliance of bolts, nuts, screws, washers and other fastening parts. With upgraded craftsmanship and standardized operation, the company further elevates product quality, complies with international industry norms, and reinforces its Experience, Expertise, Authoritativeness and Trustworthiness (EEAT) in the global fastener sector.

Washers are very important. They have the functions of sealing and leak-proofing, preventing loosening and shock absorption, and protecting contact surfaces. They need to be selected accurately and are the "safety guards" of mechanical connections.

Choosing the right screw for your project is crucial to ensure the integrity and longevity of your work. There are various types of screws available, each designed for a specific application.

In March 2026, the management and production teams of Ningbo Gangtong Zheli Fasteners Co., Ltd. held a special quality improvement meeting at its 15,000 sqm factory in Zhenhai Chemical Industrial Zone, Ningbo, China. The event was launched to further enhance product stability and meet growing global demand for high‑strength structural fasteners. During the meeting, the team reviewed production processes, heat treatment controls, and inspection procedures, and finalized a new round of technical upgrades for heavy hex bolts, ASTM A563 nuts, and threaded rods. Led by senior engineers and production supervisors, the company will strengthen raw material testing and batch tracking to ensure full compliance with ASTM, ISO, DIN, and ANSI standards. This initiative aims to support stable delivery for overseas customers in North America, Europe, and the Middle East while strengthening the company’s reputation as a reliable China fastener supplier.

From the name, high-strength bolts can usually withstand greater loads than ordinary bolts of the same specification.

Zinc Plated Hex Flange Bolt High Strength Hexagon Flange Bolt adopts an integrated structure of hex head and flange surface, removing extra flat washers during installation.