According to the ansi/asme pipe code, a shed 10, nb25 can be described as: (a) a thick wall stainless steel pipe with nominal bore size 25mm in diameter that can be operated with either high pressures or low pressures. (b) a thin walled plain carbon steel pipe with an od of 25mm that can only be used for low pressure applications. (c) a thin wall stainless steel pipe with nominal bore size 25mm in diameter that can be operated with low pressures only. (d) a thin walled plain carbon steel pipe with nominal bore of 25mm that can only be used for low pressure applications.