Which standard is the specification for welded and seamless wrought steel pipe?

• A. ANSI B36.10M
• B. AWS A5.8
• C. ASME A17.1
• D. ASME B16.3

Answer: (A)

This question focuses on which standard defines the dimensions and physical characteristics of welded and seamless wrought steel pipe used in piping systems. The standard that sets these size designations, outside diameter, wall thickness (or schedule), and standard lengths is ANSI B36.10M. This means it provides the universal reference for how steel pipe is measured and specified, ensuring components from different manufacturers will fit together in a system.

The other standards don’t cover pipe dimensions. AWS A5.8 relates to filler metals and welding consumables, not the pipe itself. ASME A17.1 is the Elevator and Escalator Code, not piping. ASME B16.3 covers threaded fittings, which is important for assemblies, but it doesn’t define the pipe’s own dimensions.