Ningbo Zhenghai Yongding Fastener Co., Ltd.

Ningbo Zhenghai Yongding Fastener Co., Ltd. is a China-based manufacturer of high-strength fasteners and bolting products for the petroleum, chemical, and power generation industries. Located in the Zhenhai district of Ningbo, Zhejiang Province, the company specializes in the production of hex bolts, stud bolts, threaded rods, and non-standard shaped fastener parts. Primary product lines include ASTM A193 B7 threaded rods, high-strength hex bolts, and stud double-ended bolts manufactured to international standards including GB, ANSI, DIN, BS, and ISO. The company holds API 20E certification for carbon steel bolting used in petroleum and natural gas equipment. Yongding serves the oil and gas, petrochemical, pressure vessel, and industrial piping markets. Products are exported to international markets and are listed on multiple global trade platforms including Made-in-China and Gold Supplier directories. The company is registered as a general equipment manufacturer in China's industrial classification system, specializing in general parts manufacturing for the energy sector.