Nanjing International Marine Equipment & Spares Ltd. (IMS) is a professional manufacturer of inlet & exhaust valves, valve seats and valve guides for marine diesel engines., covering a product range of four & two stroke diesel engines with cylinder bore ranging from 150mm to 800MM, which are widely used in various fields such as ocean shipping, water transportation, land power station, locomotives and oil fields. The products made of high alloy steel and coated with stellite alloy can meet the demands for diesel engines with various properties for multifarious fuels.

IMS possesses more than 100 specific manufacturing facilities, including forging, heat treatment, plasma transferred arc hardfacing, numerical control machining, friction-welding and non-destructive flaw detection machines. With those equipment and methods such as Physical and chemical tests as well as measuring inspections, the quality of valve products can be guaranteed.

IMS established the quality control system to make our quality commitment to our customers in accordance with GB/T19001_2000idtISO9001: 2000 Quality Control System.

HD-"Haida", the registered trademark of IMS, is marked on all our products.

We can produce valve spindles and valve seats for below engines:
MAN B & W / SULZER / WARTSILA / SKL / PIESTICK / DEUTZ / BERGEN / DAIHATSU / YANMAR / UEC(T) / HANSHIN / AKASAKA / NIIGATA and some Russion engines.

We have maintained long-term good cooperative relations with top Chinese engine makers include:
- Guangzhou Diesel Engine Factory
- Shanxi Diesel Engine Heavy Industry Co., Ltd.
- Zibo Diesel Engine Parent Company
- Ningbo C. S. I. Power & Machinery Group Co., Ltd.
- CFAG Wuxi Diesel Engine Works

As a manufacturer of valve products we can also produce valves from your prints or samples. Applications include antique and out of production engines.