Large Machinery Precision Parts

Henan Zhongyuan Heavy Forging Co.,Ltd (HHF) is a National Hi-Tech Enterprise which concludes four plants--Forging Plant, Heat Treatment Plant, Machining Plant, Petroleum Equipment Plant, one Provincial Engineering Technology Research Center for Drilling Tools Stabilizer, one laboratory, one Municipal Technology Research and Development Center.
Oil Steam Cylinder Forging is one of our products. High quality can be guaranteed.

Quality first is our principle.
HHF has been certified by API Q1 Quality Management System.
Customers are very satisfied with our high quality. Our technologists can design the drawings as per customers' requirements.

We buy steel ingot from Baotou Iron & Steel (Group) Co. LTD, Xingcheng Special Steel and Chengde jiankong Special Steel, who produce high-quality steel ingot. We have 18 years experience and have ability to meet customers’ any needs. We provide the lowest price and the highest quality, also, we have two years guarantee period. We have a level 2 lab.

Quality first is our principle.
HHF has been certified by API Q1 Quality Management System.
Customers are very satisfied with our high quality. Our technologists can design the drawings as per customers' requirements.

Tube mould is one of the essential tools in the production line of centrifugal casting cast iron pipes at present. The commonly used material is 21CrMo10. The working environment of tube mould is very harsh.The tube die is a kind of thin tube forging. During the production of tube die, the inner hole of billet contacts with mandrel and horse bar, and the billet cools rapidly, resulting in the complicated bearing condition of billet.
Because of its long length and thin wall, tube forging parts are prone to inner hole cracks and end cracks in the forging process.The influence of predrawing amount and predrawing form on the quality of tube die forgings was proposed.The scrap rate and reject rate of tube die are greatly reduced.

We buy steel ingot from Baotou Iron & Steel (Group) Co. LTD, Xingcheng Special Steel and Chengde jiankong Special Steel, who produce high-quality steel ingot. We have 18 years experience and have ability to meet customers’ any needs. We provide the lowest price and the highest quality, also, we have two years guarantee period. We have a level 2 lab.

Material for fan shaft : 34CrNi3Mo or according to the customer's requirement
Application of fan shaft : Mainly used in large wind power equipment
Production equipment for shaft : We can do forging , heat treatment , rough machining and final machining by our own factory

Material for flange : 16MnD or according to the customer's requirement
Application of fan flange : Mainly used in large wind power equipment
Production equipment for wind power flange : We can do forging , heat treatment , rough machining and final machining by our own factory
Inspection for large wind power flange : We have professional inspector and a physical and chemical laboratory construction of National Grade 2 standards