Jianhu Longxin Petroleum Machinery Co., Ltd.

Jianhu Longxin Petroleum Machinery Co., Ltd. (建湖龙鑫石油机械有限公司) is a Jiangsu Province private science and technology enterprise and Jiangsu Province high-tech enterprise, recognized as a Jiangsu Province specialized and innovative 'Little Giant' enterprise. Longxin is a network member unit of China Petroleum & Chemical Corporation (Sinopec), China National Petroleum Corporation (CNPC), and China National Offshore Oil Corporation (CNOOC). The company manufactures a comprehensive range of well control and production equipment. Core products include blowout preventers (annular, taper-type annular, U-type and S-type ram BOPs), conventional and two-in-one wellhead systems, HH class oil/gas Christmas trees, diverters, production wellhead devices, water injection wellhead devices, casing heads, choke and kill manifolds, throttle manifolds, mud manifolds, cementing manifolds, flat plate gate valves, mud gate valves, high-pressure plug valves, and high-pressure movable elbows. Products cover working pressures from 2,000 to 15,000 PSI. In December 2011, Longxin passed API Spec 6A, 16A, and 16C product certifications from the American Petroleum Institute. In 2021, the company passed API SPEC Q1. The company also holds ISO 9001, ISO 14001, ISO 45001 (occupational health and safety), ISO 10012 (measurement management), GB/T27922 (after-sales service management), and Green Supply Chain Evaluation System certifications. Longxin also holds the TS Special Equipment Production License and Well Control Equipment Production Qualification Certificate.