Chapter 13

• 25.4 mm Minimum depth to be filled with molten pig lead.
• 3.2 mm Extension of the finished joint below the rim of the hub.
• Schedule 80 Minimum wall thickness of threaded plastic pipe.
• 19 mm Minimum thickness of exposed wiped surface on each side of a wiped joint, and at least as thick as the material being joined.
• 0.002 Maximum lead content allowable for solders and fluxes (0.2%) in potable water piping.