Zhejiang High-Intensity Fastener Co., Ltd., originally known as Zhejiang Gaoqiangdu Fasteners Plant that was founded in 1987, integrates the R&D, production, testing and sale of professional high-strength fasteners. The company is the member unit of National Technical Committee of Fasteners, member unit of China State Technical Committee for Standardization of Pipe Fittings, CSCBPV Pressure Pipe Security Branch and member unit of National Branch Technical Committee of Marine Pipe for Standardization.

 "High-strength" brand fasteners and high-temperature pre-tensioned disc springs and other related related components are widely used in petroleum, chemical, marine, nuclear industry, large-scale machinery supporting, aerospace, military and other large-scale national projects.

The company has strong technical strength, complete and excellent equipment, and thoughtful after-sales service. It has passed ISO9001:2015 quality management system certification,  ISO14001:2015 environmental management system certification, ISO45001:2018 occupational health and safety management system certification, ISO50001-2011 energy management system certification, ISO/IEC 27001:2013 information security system certification, EU CE certification, China Classification Society factory accreditation certificate, intelligent manufacturing management system certification, ISO10012-2003 measurement management system certification, and after-sales service certification. The company has CNAS certified laboratories and provincial-level R&D centers, and is a key high-tech enterprise in the National Torch Plan. The Trademark Committee has recognized it as a well-known trademark in China, a Zhejiang famous brand product, and a Zhejiang Province industrial and commercial enterprise credit AAA level "contract abiding and credit worthy" unit.

The company covers an area of 90712 square meters, with a factory area of over 60000 square meters and a registered capital of 120 million yuan. It has more than 400 sets of various production and testing equipment, producing national standard (GB), American standard (ANSI), German standard (DIN), European standard (EN), French nuclear power standard (RCCM-2007), Japanese standard (JIS), international standard (ISO) industry standards (SH, HG, JB, GD, GJB) M12-M160, 1/2-6 "high-strength bolts, nuts, bolts (screws) and non-standard special fasteners, German standard DIN2093, American standard 693F, 20813, enterprise standard GQDH632-A disc springs, military large flat snail coil springs. Series products. The company has independently developed high-temperature pre tightening disc spring bolt live pressure pre tightening technology, high-strength nuclear industry specific series fasteners, low-temperature and corrosion-resistant series fasteners for petrochemical industry, high-strength and corrosion-resistant series fasteners for ship machinery, and high-strength fasteners for aerospace machinery. In 2010, it obtained an invention patent for "Production Method of Special Fasteners", in 2012, it obtained an invention patent for "Production Process of Nuclear Power Bolts", in 2019, it obtained an invention patent for "A Method of Spring Rolling", in 2020, it obtained an invention patent for "Fastener Cleaning and Drying Integrated Device", in July 2022, it obtained an invention patent for "A High Strength Steel Manufacturing Hexagonal Nut and Its Processing Process", and in August 2022, it obtained an invention patent for "A Method of Spring Rolling". Fasteners for Nuclear Power Plants ", Obtained invention patents for "a disc spring tempering anti deformation molding device" in March 2023, "a rolling production device and processing technology for 30CrNi3 bolts in a shaft system" in November 2023, "a solid-state lubrication maintenance process for thin nuts in a shaft system" in April 2024, and "a bolt group with protective function for nuclear power" in February 2025. So far, a total of 50 utility model patents have been obtained.

In the tenet of “Scientific Management, Famous Products”, it has been well received by customers for fine products and services. Welcome to visit us.