Hengyang Hongling Petroleum Pipe Co., Ltd. (hereinafter referred to as Hongling Company) formerly known as Xi'an Henggang Petroleum Pipe Co., Ltd. (hereinafter referred to as Xi'an Henggang), is a joint venture between Hengyang Steel Pipe Group and Xi'an Nat, Hongyu Mechanism, etc. Founded in 2003 in Xi'an City, Shaanxi Province, the initial registered capital of 3 million yuan, settled in Hengyang in May 2006, officially changed its name to Hengyang Hongling Petroleum Pipe Co., Ltd. Now it has developed into a large-scale and full-scale oil-specific pipe processing and production enterprise at home and abroad. The company's business scope is: Production of oil pipes, casings, drill pipes, couplings, conveying pipes and other steel pipes for oil and natural gas. Sales and technology development; Concurrently engaged in high-tech development and technical services for steel and natural gas.

The company currently has a registered capital of 34.15 million yuan, fixed assets of 58.17 million yuan and total net assets of 120 million yuan. The company has 540 employees and 150 scientific and technical personnel. It has an annual processing capacity of 500, 000 tons of refined oil and casing, and a production capacity of 3 million production capacity. The product specifications range from 48.3mm to 339.7mm. It can produce J55 and N80., L80, P110, Q125, G105, S135, 13Cr steel grade various API models, various non-API specifications special buckle high-end products; Currently has eleven 48.3mm ~ 177.8mm tubing, casing production line and three 177.8 mm ~ 339.7mm casing production line; Has fifty-four CNC machine tools for coupling blanks and finished products processing. The product export ratio is 70%.