Line Pipe Schedule 60 Dimension, Weight and Thickness Chart

Oilfield Chart - Line Pipe Schedule 60 Dimension, Weight and Thickness Chart

Pipes used in the drilling of gas and oil wells are meant for carrying fluid under certain kinds of pressure from internal or external factors, sometimes both. To withstand fluid pressure and for the pipes to carry out their functions efficiently, they must be made sufficiently stronger.  

The strength of pipes depends mainly on wall thickness. The necessity to use pipes that can sustain pressurized fluid led to the development of standard pipe sizes.

Decades ago, line pipe sizes were limited to three standards: Extra-Strong (XS), Standard Weight (STD), and Double Extra Strong (XXS). With modernization, there was a need to develop other standards to meet the changing requirements dictated by the industry.

Pipe Schedule

Pipe schedule basically describes a pipe’s thickness and is identified by the abbreviation SCH. Under the standard API 5L and ANSI/ASME B36.10 M, the most common schedules consist of the following: 5, 10, 20, 30, 40, 60, 80, 100, 120, 140 and 160. The most popular of the line pipe schedules is 40 while 5, 60, 100, 120 and 140 are seldom used.

Line Pipe Comparative Sizes, Schedules and Wall Thickness

Pipe size is normally the Nominal Pipe Size (NPS), so for a 6-inch pipe, 6 inches is its nominal size. For NPS 14 and above, the outside diameter (OD) will be the same as the NPS.

The OD for all pipe sizes is fixed. When the schedule or wall thickness varies, this has an implication on the inside diameter (ID). An increase in the schedule number increases the wall thickness but inversely reduces the actual bore. This makes the ID almost equal to the pipe’s nominal size.

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Line Pipe Schedule 60 Dimension, Weight and Thickness Chart

Nom. Size (in)OD (in)OD (mm)Wall Thkns (in)Wall Thkns (mm)Wgt (lb/ft)Wgt (kg/m)
wdt_IDNom. Size (in)OD (in)OD (mm)Wall Thkns (in)Wall Thkns (mm)Wgt (lb/ft)Wgt (kg/m)

The Line Pipe Schedule 60 Dimension, Weight and Thickness Chart shown above includes dimensional measurements in inches and millimeters. Weight is expressed in either pounds per foot or kilogram per meter.

The schedule number is determined using the following equation:

Schedule Number = (1,000) (P/S), where:

– indicates the internal working pressure in pounds per inch, and
S – indicates the allowable stress in pounds per inch

Line Pipe Schedule 60 Dimension, Weight and Thickness Chart Abbreviations:

  • mm – millimeter
  • lb/ft – pounds per feet
  • kg/m – kilogram per meter

Line Pipe Standard Specifications

The manufacture of line pipe follows the most common specifications developed by organizations responsible for standardizations:

  • The API Spec 5L, for line pipe specification
  • ASME/ANSI B36.10M, for welded and seamless wrought steel pipe
  • ASME/ANSI B36.19, for stainless steel pipes

API stands for the American Petroleum Institute while ASME stands for the American Society of Mechanical Engineers and ANSI refers to the American National Standards Institute.

Go here if you are looking for the Line Pipe Schedule 80 Dimension, Weight and Thickness Chart.