what is pipe, pipe size, pipe length, pipe thickness
Pipe :
- A straight pressure tight cylinder hollow, used in piping system
- Different types of pipes are used in different design condition , considering technician and commercial parameters.
- Pipes are mainly classified as below
Pipe Size :
- Pipe size is mentioned as nominal pipe size (NPS) , also mentioned as diameter nominal (DN) and Nominal bore (NB)
- NPS is in-between of outer and inner diameter of pipe
- For NPS 14″ and above NPS is same as outer diameter
- ID will changed with changed in pipe Schedule number.
Read this .. pipe and pipe classification in detail
Pipe Length :
Pipes are available in following lengths
- Single Random : 4.8 Meter to 6.7 Meter with 5% of length 3.7 to 4.8 m
- Double Random : Minimum average of 10.7 Meter and a minimum length of 4.8 Meter with 5% 4.8 Meter to 10.7 Meter.
- Fixed length as per purchase order.
Pipe Thickness :
- Thickness are expressed in Schedule number
- (5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160)
- Also in STD, extra strong – XS, Double extra , Strong -XXS.
- Higher the schedule higher the thickness.
Pipe Schedule :
- A schedule number is an approximate value of the equation = 1000 P/S
- P is the service pressure in (psi)
- S is the allowable stress in (psi)
- The outside diameter of each pipe size is standardized. therefore, inside diameter depends on the schedule number of pipe.
- ASME B36.10 provides standard dimension requirements for welded and seamless wrought iron pipes.
- Thickness is expressed in Schedule number (5S, 10S, 40S, 80S).
- Schedule number with S suffix is as per ASME B36.19 and primarily intended to use with stainless steel pipe.
- B36.10 cover standard dimension of pipe in the range of 1/8″ to 80″
- B36.19 cover standard dimension of pipe in the range of 1/8″ to 30″
Pipe End :
- Pipe can be plain end.
- Beveled end.
- Threaded end.
- Special end such as spigot, O-Ring etc.
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