Regarding pipe schdule,we are using sch 10 and sch 40 steel pipes,I want to know about sch pipes,why we using this type of sch pipes

regarding pipe schdule,we are using sch 10 and sch 40 steel pipes,i want to know about sch pipes,why we using this type of sch pipes

Pipe schedules are a measure of pipe wall thickness. These requirements exist due to specific factors within certain applicable systems. Predominately, where pressures are higher, the schedule #, or actual wall thickness, is greater, to withstand the internal pressure of whatever liquid or gas is passing through. Schedule 10 wall thickness is thinner than Schedule 40 wall thickness.

In my area we use schedule #20 for light applications but we use schedule#40 for our drainage and house plumbing and sewers. Great explanation by musthafa. Regards, Tom