Sell marine diesel piston ring

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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 specializes in marine diesel piston ring and is the designated component supplier for China National Marine Cooperation. And It is the main piston rings supplier for most of the high power diesel engine factories of China. It also can supply a wide range of piston ring , like MAN B&W, MTU, MAK, DAIHASU, PIESTICK, SULZER, YANMAR, MWM. ZSPR can be the supplier for Engine Makers (OEM) , and can design and process products according to customers requirements(drawing or sample) .

Products manufactured in our factory have a wide range of different types. These include: plain, barrel face, keystone, taper faced, torsion, under cut, coil expander, oil control and combined rings.

ZSPR also 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

The following are different types of coatings which are commonly supplied by ZSPR:
Chrome plating
phosphate coating
copper plating
tin plating
ceramic chrome plating
plasma sprayed coating

We control every production process to make sure supply the high quality to our customers. It keep being our aim to supply high quality with competitive price to our customer. If you interested in our products, pls feel free to inform us the details you. We are sincerely hope to cooperate with any company or person from any countries or regions. We assure you that any question or inquiry from you will receive our prompt attention.