Lead Pipe
noun
A lead pipe is a lead pipe. Don't hit people with this in the knees.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
水道の配管には、かつては鉛管がよく使われていました。
Lead piping was once often used in plumbing systems.