The pipeline is like a human intestine, and sometimes it is blocked.

Miscellaneous things in daily life, such as toilet paper, can easily get stuck in the pipe and cause blockage of the pipe. Secondly, in the long-term use, a lot of foreign matter will adhere to the inner wall of the pipe, which will make the inner diameter of the pipe smaller, leading to staged blockage.

what is the rubber metal pipe test plug? 
economy pipe test plug includes chemical resistant nitrile custom rubber gasket and corrosion resistant stainless steel hardware.

which is safe, effective solutions for rapid pipe leak testing and repairs and easy to install, time saving, labor saving, reused many times,widely use for plastic, cast iron, steel or iron pipe, good assistant for pipeline maintenance