UL Standards free download UL 1713-2017 pdf download – Pressure Pipe and Couplings, Glass Fiber- Reinforced, for Underground Fire Service UL 1713-2017 pdf download - Pressure Pipe and Couplings, Glass Fiber- Reinforced, for Underground Fire Service. 11 Leakage Test for Joints 11.1 Pipe joints having maximum clearances and joints having minimum clearances between the pipe spigot and... 02-10 Download Now