BI Pipe S40

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• General Info

  BI Pipe S40 (Black Iron Pipe Schedule 40) is a type of Black Iron Pipe (often made of carbon steel) that has a Schedule 40 thickness, making it thicker and stronger than Schedule 20 pipes. Black Iron Pipe (BI pipe) is not galvanized, giving it a distinctive black or dark-colored finish, which is typically used for a wide range of applications, including gas, water, and oil lines, especially when corrosion resistance is not the primary concern (unlike galvanized pipes). The Schedule 40 designation indicates the pipe's wall thickness, which allows it to handle moderate pressures compared to thinner-walled pipes.

• Specification

  Wall Thickness
  The wall thickness of Schedule 40 (S40) pipes is thicker than Schedule 20 (S20) pipes, which makes it stronger and suitable for moderate-pressure applications. The wall thickness varies by Nominal Pipe Size (NPS):
  
  1-inch BI Pipe S40: Wall thickness of 0.140 inches (3.56 mm)
  2-inch BI Pipe S40: Wall thickness of 0.154 inches (3.91 mm)
  3-inch BI Pipe S40: Wall thickness of 0.216 inches (5.49 mm)
  4-inch BI Pipe S40: Wall thickness of 0.237 inches (6.02 mm)
  6-inch BI Pipe S40: Wall thickness of 0.280 inches (7.11 mm)
  8-inch BI Pipe S40: Wall thickness of 0.322 inches (8.18 mm)
  10-inch BI Pipe S40: Wall thickness of 0.365 inches (9.27 mm)