Schedule 40 stainless steel pipe (also known as Schedule 40S) is a type of stainless steel pipe in accordance with ASME/ANSI standards, which has both a fixed outer diameter and Schedule 40 wall thickness specifications. The common materials are 304 or 316. Its structure can withstand moderate pressure and is suitable for applications in gas, water, natural gas and general chemical pipelines.Schedule (SCH) indicates the wall thickness grade of the steel pipe: the larger the n...