Ningbo Xingsheng Oil Pipe Fittings Manufacture Co., Ltd.

Ningbo Xingsheng Oil Pipe Fittings Manufacture Co., Ltd. is a China-based manufacturer of carbon steel bolting and fasteners for the petroleum and energy industries. The company is a subsidiary of Ningbo Chenglong Special Steel Company, which was established in 1992 and specializes in special steel and fastener products. Located in Ningbo, Zhejiang Province, the company produces a range of threaded products including ASTM A193 B7, B7M, B16, and A320 L7, L7M, L43 thread rods and stud bolts for use in oil and gas, petrochemical, and pressure vessel applications. The company holds API 20E certification for carbon steel bolting used in high-pressure and high-temperature petroleum equipment. Products are exported internationally, with known shipments to customers including KM Fasteners LLC in the United States. As part of the Ningbo fastener manufacturing cluster in Zhejiang Province, Xingsheng benefits from the region's established supply chain for specialty steel and precision machining capabilities.