16 дюймов фрезерованный 8 1/2

Haojiang Drilling Service Co., Ltd (referred to as HJD BITS) formerly known as Shanghai First Petroleum Machinery Factory, was established in 1956 and was the first enterprise in China to produce tricone bits. In 1993, it jointly established Baosheng Drilling Machinery Co., Ltd. with Hongkong Baoli International Group Corp. Limited. In 1999, Baosheng Drilling Machinery Co., Ltd. was acquired by Kingdream Public Limited Company a leading domestic manufacturer of tricone bits. In 2004, at the request of Kingdream Public Limited Company, Shanghai Haojiang Drilling Machinery Parts Co., Ltd. was established and became an important cooperative manufacturer of Kingdream Public Limited Company with its stable and reliable product quality. In 2014, the manufacturing base was built in Kunshan, Suzhou, and Kunshan Haojiang Drilling Tools Co., Ltd. was established. With the continuous development of the company, Kunshan Haojiang Drilling Tools Co., Ltd. and Sinotai Petroleum Equipment Co., Ltd jointly established Haojiang Drilling Service Co., Ltd.

HJD BITS is mainly engaged in the research, development, production, and sales of various series of oil Roller Cone Bits and mining drill bits, with product specifications covering 3 7/8"-26". Besides being used in the domestic market, HJD BITS' products also sell well in Japan, Southeast Asia and North America, receiving high praise and favor from domestic and foreign customers. With flexible market adaptation mechanism, HJD BITS can provide stable quality and reliable oil products to domestic and foreign customers in a timely manner, while also providing excellent pre-sales and after-sales services. HJD BITS has built a flexible production line of drill bits mainly with CNC machining center, established a perfect quality assurance system, established a comprehensive quality assurance system, and passed ISO9001 and API 7-1 certifications.

HJD BITS adheres to the corporate philosophy of "integrity, professionalism, responsibility, and innovation", insists on showcasing quality with leading design, promoting quality with advanced technology, ensuring quality with perfect management, continuously expanding domestic and international markets. HJD BITS will continuously strive to provide the best solutions for the oil drilling industry. Choose HJD BITS, choose the excellent fusion of quality and craftsmanship. Made in China, trusted by the Global.