Zhong Yuan Special Steel Co.,Ltd. was founded in 1970, finish construction and start producing in 1984. It turned into a incorporated company in 2007 and get listed in stock market in 2010.

Our company is authorized by China’s national Statistics Department as a listed big-sized enterprise, it’s the only scaled company in China which can intergrate melting----forging----heattreating----machining----productfinishing process as an integrated  chain. Our company has got the authorization of API,Certification of National Industrial Military Production,ABS,CCS,etc.

Our company has got the honor of "Henan Province High-Tech Enterprise" "Henan Province Technoligy Reserch Leading Company" "National energy-saving Company" "National Good Stuff Relationship Enterprise" "National Leading 50 Company in Petroleum Equipment Manufacturing". In 2012 our company is honored as national employee leading enterprise and get the third Henan Province’s "Outstanding Contribution Prize In Industrial Field" "Province Governor’s Quality Prize".

Our Company has SX-65 1400T Radial Forging Machine; RF-70 1800T Radial Forging Machine sourced from GFM company Austria, 5000T Press Machine sourced from MEER German and other advanced equipments.

As a national level-one technical inspection station, our company has an international leading inspectional technology. Our company has introduced equipments such aselectronic scanner microscope, Wide field of metallographic microscope, photoelectric direct reading spectrometer, High frequency infrared carbon sulfur analyzer and ultrasonic fault detector, magnetic defect inspector, Automatic digital impact test machine,etc. By these equipments we can have a precise test on steel’s chemical composition; mechanical property; metallurgical structure and physical property. Our company’s technical inspection station has got approval from Chinese National Accreditation Society(CNAS) and  Accreditation Committee of science technology and industry for national defense(DILAC).

Our company has two series of product, industrial special equipment and large-scale special steel forgings. Our Industrial special equipment mainly include oil field drilling tool, mandrel bar, casting pipe mould, etc. Among them big-sized oil field drilling tool has occupied the Chinese market share of 80%, the production capacity of drill collar is the second ranked in China, no-magnetic drill collar mainly supplied to  Chinese National Petroleum Corp and Sino Petroleum Corp, we are the biggest supplier of these two large Group Company. Our product export in bunch to Middle East and Southeast Asia and we are the main supplier of American SCHLUMBERGER; Our mandrel bar product have filled the blank of domestic market and we are the biggest mandrel bar producing company in Asia, the Product performance has reached the international advanced level. We are the main supplier of Anshan Steel Corp, Inner Mongolia Baotou Steel Company, Hengyang Valin Group and other famous Chinese group company. Exporting in bunch to Europe; USA; Asia Pacific; Casting Pipe Mould product is the best quality and longest use time product in China. We are the supplier of Xinxing Ductile Iron Pipes Co., India Steel Group and export to Egypt; Japon,etc; Large-scale special steel forging product mainly include metallurgic mill roll,wind turbine main shaft, big-sized die steel, etc. Which is widely applied to metallurgy, petrochemical engineering, shipbuilding industry, construction machinery,etc. Our company keeps a good cooperative relationship with Baosteel Changzhou roll company, Vestas Wind System A/S, Shanghai electric and Nordex AG.

Our brand “Tan Yuan" oil field drill collar is honored as “Famous Brand Of Henan Province",  "High Quality Product Of Henan Province" "; ZYSO brand metallurgy product is honored as international famous brand of Henan province, ZYSO mandrel bar is honored as “High Quality Product Of Henan Province".

According to “exceeding and leading,transforming and upstating" the core exploring requirement,Zhongyuan Special Steel Co., Ltd. Will forge our company to a “invisible champion" of no-magnetic drill tools,high quality mould steel,etc. We’ll develop to a manufacture company of key component for advanced equipment manufacturing and to a domestic-leading,international-level,feature-out high quality special steel manufacturing enterprise.

Products & Service

Drill Pipes

Drill Collars

Drill collar number
NC23-31	NC50-67
NC26-35	NC50-70
NC31-41	NC50-70
NC35-47	NC50-72
NC38-50	NC56-77
NC44-60	NC56-80
NC44-60	6 5/8REG
NC44-62	NC61-90
NC46-62	7 5/8REG
NC46-65	NC70-97
NC46-65	NC70-100
NC46-67	8 5/8REG

Non-magnetic Drill Collars

Drill String Cross-over Sub

Spiral Drill Collars

Integral Heavy Weight Drill Pipe

Type I (single length 9300mm)	Type II (single length 13500mm)
ZH-JZ66-6 5/8FH-I	ZH-JZ50-NC50-II
ZH-JZ55-5 1/2FH-I	ZH-JZ45-NC46-II
ZH-JZ50-NC50-I<, o:p>
ZH-JZ45-NC46-I
ZH-JZ35-NC38-I
ZH-JZ29-NC31-I

Kelly

Pipe Mould

Wind Turbine Shaft

Die Steel/Tool Steel

Mandrel Bars

Rolling mill roll

High Pressure Boiler Tube

Forgings

Corrugated roll