HELI PETROLEUM MACHINERY CO., LTD(the predecessor of the company was Juneng Special Steel Co.,Ltd), the company is established in 2006, is known as a professional petroleum pipe manufacturer in China. It has become one of the largest and most diverse industries in the domestic petroleum pipe industry. The product can cover all threads within the API standard range, and the company is also engaged in the research and development, production, sales, and service of special threads.