its the thickness of the pipe wall
It is the wall thickness heavier then schedule 20 lighter then schedule 80
Schedule in pipe is relevant to NPS (National Pipe Sizes) and refers to the wall thickness of pipe. 20 is thin wall, 40 is strong and 80 is extra. (There are other sizes, these are just examples.)
Kindly adviseSCH20 are suitable for 18" exhaust pipe urgently and are there any spec to justify if suitable on SCH20 instead of SCH40 pipe?
Thicker pipe wall is required to contain higher fluid pressures. For the same fluid pressure, a thicker pipe wall is required for a larger diameter pipe than that required for a pipe of smaller diameter. A schedule of pipe sizes and wall thicknesses has been established by ASTM standards governing manufacturing of pipe. A previous description of pipe wall thicknesses as "Standard", "Extra Strong" and "Double Extra Strong" has been supplanted by a schedule of 10, 20, 30, 40 60, 80, 100, 120 and 160. Schedule 40 pipe generally compares with the previous use of "Standard". For metal pipe, Schedule 80 pipe has a thicker wall and can withstand greater pressures than a Sch 40 pipe. A point of confusion is that for PVC piping, Schedule 80 pipe has a thinner wall than Sch 40 pipe.
schedule is the thickness of the pipe and class is pressure/temperature rating of a fitting or pipe
schedule 40 is thicker than schedule 20
It is the wall thickness heavier then schedule 20 lighter then schedule 80
Schedule in pipe is relevant to NPS (National Pipe Sizes) and refers to the wall thickness of pipe. 20 is thin wall, 40 is strong and 80 is extra. (There are other sizes, these are just examples.)
Pipe schedule tell you something about the wall thickness of a pipe. Higher schedule means thicker wall. The actual thickness must be read from a pipe specification sheet, as it differs from material to material. Typical pipe sch. are Sch 20, 40, 80, 160, XS, XXS.
Kindly adviseSCH20 are suitable for 18" exhaust pipe urgently and are there any spec to justify if suitable on SCH20 instead of SCH40 pipe?
Pipe schedule tell you something about the wall thickness of a pipe. Higher schedule means thicker wall. The actual thickness must be read from a pipe specification sheet, as it differs from material to material. Typical pipe sch. are Sch 20, 40, 80, 160, XS, XXS.
What schedule 10 ,20, 40, 80, 120????
1/8 pipe schedule
pipe schedule is an American definition to define pipe thickness and how much pressure can the pipe stand, schedules are 10,20,40,80.., pipe schedule is nearly close to the eurobian definition for pipe class.
Thicker pipe wall is required to contain higher fluid pressures. For the same fluid pressure, a thicker pipe wall is required for a larger diameter pipe than that required for a pipe of smaller diameter. A schedule of pipe sizes and wall thicknesses has been established by ASTM standards governing manufacturing of pipe. A previous description of pipe wall thicknesses as "Standard", "Extra Strong" and "Double Extra Strong" has been supplanted by a schedule of 10, 20, 30, 40 60, 80, 100, 120 and 160. Schedule 40 pipe generally compares with the previous use of "Standard". For metal pipe, Schedule 80 pipe has a thicker wall and can withstand greater pressures than a Sch 40 pipe. A point of confusion is that for PVC piping, Schedule 80 pipe has a thinner wall than Sch 40 pipe.
What does the schedule have to do with the material as schedule is the wall thickness Schedule 10, 20, 40 80 and 120 (XXH) The Schedule is telling you the wall (INTERNAL) thickness 10, 20 40, 80 and 120 XXH Whether it be steel, brass, galvanized and wrought ` About the pressure capacity, it is not the same because every material such as steel, brass, galvanized or wrought has a different strenght of materials.
schedule is the thickness of the pipe and class is pressure/temperature rating of a fitting or pipe