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Our high quality Marine Inlet & Exh. Valves(Has beenrecognized and approved by MAN Diesel & Turbo) .

Our WDF marine Inlet & Exh. Valves have below features:

1. Use our patent technology -(Vacuum Fusion and Hardening Treatment) + The unique processing technology and The unique         heat treatment process, making the hardness of the alloy seal surface surpass HV600.

2. To make sure that the base metal could fuse well with overlay welding layer, eliminate defects such as pores, enclosed slag,       loose, etc; After Copying Rolling for R Place and Bottom Surface on Exhaust Valve, More compact and smooth surface               layer、Better capabilities high temperature, corrosion and anti-carbon、Longer service life.

3. After test in lab of factory and actual capacity test, all prove that the quality of valves to reach international advanced level, and     be approved by Germany MAN Diesel & Turbo and WARTSILA company successively, passed the authentication of qualified       supplier, to be a approved manufacturer by foreign authoritative manufacturers.

For low speed engine Exh. valve with our seat, we provide 3 years guarantee under normal using condition;

For medium speed engine Exh. & Intake valve with our seat we provide 12 months gurantee under normal using condition.

Wear-resisting、Anti-crack、long working life、Saving purchasing cost, Extend all two stroke diesel engine overhaul interval of more than 50%.