F.A.Q.
Advice and answers from the Tuspipe Team
1 1/4 Black Iron Pipe
1 1/4 Black Iron Pipe is a seamless steel pipe used in a wide range of applications such as gas distribution, fire protection systems, industrial piping and building construction.
Specification Parameters Such As Diameter And Wall Thickness
1 1/4 inch Black Iron Pipe has a nominal diameter of 1 1/4 inches (DN32) and an actual outside diameter of 42.16 mm (in accordance with ASTM A53). the standard wall thickness is 3.56 mm for Schedule 40 and 4.85 mm for Schedule 80. Schedule 40 is approximately 4.05 kg per meter and has a pressure capacity of 150 PSI or more.
References
ASTM A53/A53M. (2022). “Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated”.
NFPA 54. (2021). “National Fuel Gas Code”.
