Hot Rolled Steel Pipe

Grade Summary: Black iron pipe is still used in many homes and businesses to convey natural gas or propane fuel, and is a popular choice in fire sprinkler systems due to its high heat resistance. Pipe  is used for the movement of  gas or fluid (such as water , air or oil) and therefore the ID (inside diameter) was the critical dimension. The nominal dimension provided on pipe is the ID.

Typical Applications: In commercial buildings, steel pipe is used to convey heating or cooling water to heat exchangers, air handlers, variable air volume (VAV) devices, or other HVAC equipment.

Available products: Round Pipe Only

Pipe wall thicknesses are given in “Schedules”, the most commonly used Schedules are Sch 40 and Sch 80 which . designate the wall thickness of pipe. The wall thickness on a pipe schedule changes with the size. For example: With a – 0.750″ Sch 40 pipe it has a .113″ wall thickness – However, with a 2″ Sch 40 pipe it has a .154″ wall thickness

Black Iron Pipe Details: 

Black Iron pipe is measured by taking the following:

  • The nominal inside diameter (inches)
  • The wall thickness (inches)

The Outside diameter is not provided as a common measurement as the product is designed with the movement of a volume, such as Air, Water or Oil and the flow rate is the primary concern. The inside diameter  provided is a nominal number not an exact measurement.

Pipe products are typically not used in structural applications – Round Tube is used instead.

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