Heavy Duty SS Duct Pipeline refers to a pipeline that is made up of stainless steel materials that are different stainless steel grades. It is most used and tubes are cost-effective. Heavy Duty SS Duct Pipeline is a category of stainless steel pipes used in the piping of various applications. These applications vary such as air, oil, water and natural gas applications. These are various grades of stainless steel used to produce Heavy Duty SS Duct Pipeline.