Changsha Zhengsheng Special Piston Ring Co.Ltd-ZSPR, One of the Top Manufacturers of marine diesel Piston Ring, compressors Piston Ring engineering machinery piston ring and all type of piston ring casting in China with a history of more than 60 years.It is also the earliest one in China to introduce into advanced technologies from German Goetz Company and British AE Company and has set down product quality regulations according to ISO-9001.
ZSPR can supply all type of piston ring casting, it has developed its own material series, ranging from low and medium grade to high grade with full specifications to meet different engine needs.
Cast (gray cast) iron
Alloy cast iron
Ductile cast iron
Vermicular graphite cast iron
Malleable iron, semi-malleable iron
steel ring
Metal ceramic
we can design and process products according to customers requirements.
ZSPR can supply all type of piston ring casting, it has developed its own material series, ranging from low and medium grade to high grade with full specifications to meet different engine needs.
Cast (gray cast) iron
Alloy cast iron
Ductile cast iron
Vermicular graphite cast iron
Malleable iron, semi-malleable iron
steel ring
Metal ceramic
we can design and process products according to customers requirements.
Main Products
piston ring,marine parts,locomotive parts,piston ring casting