Welded and Seamless Steel Pipe Schedule Weight Chart

Oilfield Chart - Welded and Seamless Steel Pipe Schedule Weight ChartThe Welded and Seamless Steel Pipe Schedule Weight Chart provides an overview of the two main pipes used in the oil and gas industry. The table also provides specific information on how efficient the pipe is. Details include the accurate gallon capacity per linear foot. It also supplies data on pipe schedule or wall thickness.

Welded and Seamless Steel Pipe Schedule Weight Discussion

The line pipe manufacturing industry produces two types of pipe: welded steel pipe and seamless steel pipe. They have significant differences in terms of production cost and steel grade.

Welded steel pipe is used widely in automobiles, boilers, furniture, scaffolding, and other industries. This steel pipe is a tubular material that is made from flat plates, known as skelp that is formed to prepare for welding. To ensure high-quality standards, a radiological or ultrasonic inspection is performed together with a pressure test.

Listed below are the benefits of using welded steel pipe:

  • It is cost effective compared to seamless pipe
  • Its wall thickness is consistent
  • It is possible to inspect the internal surface before manufacturing

Meanwhile, seamless line pipe is made from a cylindrical bar heated to a high temperature before piercing it to make a hole through the cylinder. The roller sizes are used to create the pipe’s wall thickness and correct diameter. The process creates small diameter pipe ranging from 0.5 to 24 inches.

Here are some benefits of using seamless line pipe:

  • Pressure ratings are increased
  • It has increased strength under heavy load
  • It has uniform shape

Increased pressure rating is the seamless line pipe’s best benefit, as it has increased ability to resist heavy loads. While it is a bit expensive, lighter and thinner sizes can be an option to reduce the expenses.
 

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Welded and Seamless Steel Pipe Schedule Weight Chart

NPSODWall ThknsID (in)Wgt (ppf)Std to XXHY
wdt_IDNPSODWall ThknsID (in)Wgt (ppf)Std to XXHY
11/20.840.1090.6220.85STD
20.1470.5461.09XHY
30.1880.4641.31
40.2940.2521.72XXHY
53/41.050.1130.8241.13STD
60.1540.7421.48XHY
70.2190.6121.95
80.3080.4342.44XXHY
911.3150.1331.0491.68STD
100.1790.9572.17XHY
 

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Welded and Seamless Steel Pipe Schedule Weight Chart - Dimensions and weights section modulus and gallons capacity per linear foot

NPSODSCHSection ModulusGallon Cpty Per Linear Foot
wdt_IDNPSODSCHSection ModulusGallon Cpty Per Linear Foot
11/20.84400.04070.0158
2800.04780.0122
31600.05280.0088
40.05770.0026
53/41.05400.07050.0277
6800.08530.0225
71600.10060.0153
80.11030.0077
911.315400.13280.0449
10800.16060.0374

Terms Used:

Nominal pipe size is an international standard used to determine the diameter of a certain pipe.

Pipe schedule defines a pipe’s wall thickness. Examples include SCH:  5, 10, 20, 30, 40, 60, 80, 100, 120, 140, and 160.

O.D = Outside diameter

I.D = Inside diameter wall = Wall thickness lbs/ft = lbs/ft

STD = Standard weight.

Welded and Seamless Steel Pipe Schedule Weight Chart Abbreviations:

  • O.D. – Outer Diameter
  • I.D. – Inner Diameter
  • STD – Standard
  • SCH – Schedule
  • XHY – Extra Heavy
  • XXHY – Double Extra Heavy
  • NPS – Nominal Pipe Size

Pipe Size Formula:

  • O.D X 25.4 = mm
  • I.D x 25.4 = mm Wall x 25.4 = mm
  • Lbs./ft. x 1.488 = kg/meter

Go here if you are looking for the Line Pipe Dimensions and Schedule in Millimeters Chart (API 5L).