Hengyang Jinhua High-pressure Vessel Co., Ltd. was established in March 2008. It is a newly registered subsidiary of Hengyang Jinhua Technology Co., Ltd., with a total investment of 6,543.8+5 billion yuan. It will build three high-standard and modern production lines with an annual output of 500,000 high-pressure gas cylinders. The first phase project-the production line with an annual output of 6,543,800+500,000 high-pressure gas cylinders is expected to be officially put into production at the end of 2008. The commissioning of this project has filled the blank of the high-pressure gas cylinder project in Central and South China. The project mainly produces series products of various specifications, such as φ 232, φ 325, φ 356, φ 2 19 automobile natural gas cylinders and high-pressure oxygen cylinders, which are widely used in automobile, medical, chemical, mechanical, fire-fighting and other fields. The sales target is export and domestic sales. While aiming at overseas markets, we also pay attention to the development of domestic markets.

Hengyang Hongcheng High-pressure Gas Cylinder Tube Manufacturing Co., Ltd. is a professional high-pressure gas cylinder tube manufacturer jointly invested by Shanghai Pucheng Metal Material Co., Ltd. and Henggang Group. The production plant10.2 million square meters, and the production line is the most advanced hydraulic automation production line in China. The products are made of seamless steel pipes in Henggang, with an annual output of 30,000 tons of high-pressure gas cylinders. Materials: 27SiMn, 37Mn, 30CrMo, 35CrMo, 34CrMo4, etc. Specification: Ф 60 ~ 406 ㎜. Wall thickness: 3 ~ 30 ㎜, the maximum tensile capacity of hydraulic fine drawing machine is 600 tons, and it has advanced testing equipment and scientific research institutions. The company constantly promotes scientific and technological progress and innovation, and is committed to the research and development of new products, which can meet the needs of high-precision natural gas tanks, liquefied gas tanks, fire tanks, military and national defense pipes, high-voltage power station pipes, hydraulic prop pipes and large-diameter thin-walled pipes.

Hengyang Hongda Special Steel Pipe Co., Ltd. is a manufacturer &; Oslash seamless steel pipe manufacturer with specifications above 356 mm has four sets of thermal expansion pipe production devices, and the supporting equipment includes: hydraulic straightener, six-channel ultrasonic flaw detector, high-speed band saw, 1000 ton hydraulic testing machine and other equipment. China is the only manufacturer that cooperates with Valin Steel Pipe Co., Ltd. to produce super-large diameter seamless steel pipes. HTC plans to build six production lines of thermal expansion tubes on the existing basis to meet the market demand. The company has an existing workshop area of 20,000 square meters, and its main products are: fluid pipes, pipeline pipes, coupling pipes, structural pipes, surface casings, gas cylinder pipes and high-pressure boiler tubes. The main specifications are&; Oslash is 355mm ~ & ampOslash720mm, with a wall thickness of 6mm~40mm and a length of 6 m ~ 14 m. The products are mainly exported to Europe, America, Southeast Asia, the Middle East, Australia and Africa.

Hengyang Jinhong Petroleum Drilling Tool Co., Ltd. was established on June 28th, 2007. A joint venture jointly invested by Hengyang Hong Xin Industrial Co., Ltd. (formerly a subsidiary of Henggang Group), Xi Annette Petroleum Technology Co., Ltd. and Shaanxi Leifeng Machinery Manufacturing Co., Ltd. specializes in producing and selling a series of oil drilling tools such as oil drill pipes and drill collars.

Hengyang Hongling Petroleum Pipeline Co., Ltd. was established in June 2003 with a registered capital of180,000 yuan. It is mainly engaged in the production, sales and technical development of steel pipes for oil and gas, such as tubing, casing, drill pipe, coupling and conveying pipe. High-tech development and technical service of steel pipes for oil and gas. After more than five years' development, the company has become one of the professional manufacturers of petroleum pipes with large scale and complete varieties in China. The company has nearly 300 employees and assets of 70 million yuan, producing all API series tubing and casing with specifications ranging from φ 48.3 mm to φ 339.7 mm, and developing and producing various oil well pipes with metal seals and special joints. The annual processing capacity of oil casing is 200,000 tons, and the coupling production capacity is 6,543.8+0,000. In 2009, he entered the park and invested 200 million yuan in the first phase. After the project is completed, the annual sales revenue can exceed 300 million yuan, and the annual profit and tax can exceed 50 million yuan.