Pipes made of stainless steel and utilized in the marine sector are designed for harsh ocean environments .Salt water, strong winds, and humidity are great corrosion and break resistant issues. As a result, these pipes are usually used in the construction of ships, offshore platforms, and coastal infrastructure. The strength of these pipes enables some mechanical works under the ocean to be easier. Some special grades of stainless steels are often used in order to enhance their ability to pitting and crevice corrosion so that they can provide reliable long term service with low maintenance costs