New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

What color is ABS pipe rated at 230 psi (1590 KPa)?

1. Black

2. Blue Grey

3. White

4. Clear

The correct answer is: Blue Grey

The correct answer is blue grey for ABS (Acrylonitrile Butadiene Styrene) pipe rated at 230 psi (1590 KPa). In the context of plumbing and pipefitting, the color of ABS pipe is standardized to denote specific pressure ratings and applications. While typical ABS pipe is usually black, the designation of blue grey pipe indicates that it has been specifically manufactured and tested for higher pressure applications. This color coding helps professionals easily identify the type of pipe they are working with and ensures compliance with safety and regulatory standards. Understanding the significance of pipe colors in coding systems is essential for pipe fitters and plumbers to select appropriate materials for a given application, particularly under varying pressures and environmental conditions.