Zhongyuan Special Steel Co., Ltd (ZYSCO), Stock No.002423,  located in the city of Jiyuan, Henan province, started in 1970, is the listed company with the overwhelming share hold controlled by the China South Industries Corporation. ZYSCO has been awarded National Hi-Tech enterprise, Henan Tech- Innovation enterprise and possesses Provincial Tech center enterprise, Henan special steel engineering center, National laboratory and Post doctor research base. The company focuses on the manufacturing of big size special steel forgings, drilling tools, mandrel bar , steel pipe mould , die steel and all kinds of hollow bar.

At present, there are approximate 3700 sets of equipment and the capacity of output is 250 thousand tons of melting (20 thousand tons of ESR),150 thousand tons of forging and 40 thousand tons of heat treatment capacity.

ZYSCO has produced drilling tools for 30 years and owns the full product line including melting, forging, machining, and heat treatment lines.

ZYSCO is one of the first companies that develop drill collars and integral heavy weight drill pipe at domestic and is awarded Top 50 of petroleum and petrochemical equipment industry for consecutive 5 years, the Tanyuan brand drill collar is regarded as reputed trademark and famous brand product by Petroleum and Petrochemical Association of China.

We are the sole company in China that produces the non-magnetic drill collars and non-magnetic compressive service drill pipe and our non-magnetic drilling tools are granted Hi-Tech product by provincial government, taking the 80% market in China. The non-magnetic drilling tools are awarded as nature science invention, and fill the market blank in domestic market.

The annual output of drill collars of ZYSCO up to 20000 pieces, including 2000 pieces of non-magnetic drill collars and 6000 pieces of integral heavy weight drill pipe.,1000 tons of drill pipe and 5000 tons of stabilizer blank.