As a top-tier manufacturer of high-strength fasteners in China, Ningbo Zhongjing Electric Technology Co., Ltd. Boasts high-standard quality certification systems and product production processes. Its core product, the Torsional Shear Type High Strength Bolt, is R&D-manufactured specifically to meet the stringent technical requirements of large-scale key projects worldwide. Covering a comprehensive range of international standard systems, the product features precise and complete specifications, authoritative and reliable quality certifications, and outstanding mechanical properties. It has become the preferred fastener in core engineering fields such as power, construction, bridges, and transportation, gaining widespread trust and recognition from top global enterprises.

This Torsional Shear Type High Strength Bolt is compatible with multiple mainstream international standards, with a well-improved specification system. It can accurately adapt to diverse engineering scenarios and achieve seamless alignment with global construction standards:

Executive Standards: Fully compliant with core standards of various countries, including GB/T 3632 (China), ASTM F3125 (USA), EN14399 (Europe), and ISO 898 (International Standard). It can be directly applied to various engineering projects at home and abroad.

Dimensions: Metric specifications cover M16-M30; Non-standard size products can be customized according to the special design requirements of complex projects, fully meeting personalized adaptation needs.

Strength: Core grades include 10.9S, 10.9, and 150 ksi (per ASTM A490 and ASTM F2280 standards). It integrates high tensile strength, excellent shear resistance, and stable load-bearing capacity, capable of coping with various extreme working conditions with ease.

Coatings: Three high-performance coating solutions are available-Black Oxide, Phosphating Coating, and Dacromet Coating. Phosphating Coating optimizes torque transmission performance and paint adhesion, while Dacromet Coating offers superior corrosion resistance, suitable for humid, coastal, and harsh industrial environments. All coatings strictly adhere to international anti-corrosion standards, effectively extending the product's service life.