Types of copper supply pipe

Plumbing · Distribution Piping In the House · printed page 265 (PDF page 266)

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Book index entries

Copper – Supply Plumbing Pipe Plumbing – Copper Supply Pipe – Types Supply Plumbing – In-house

Text in the illustration

outside diameter - .625"
TYPE M
(printed in red)
wall thickness .028"
for general plumbing (not for underground) - available in hard temper only
TYPE L
(printed in blue)
wall thickness .040"
for general plumbing and heating - available in soft or hard temper
TYPE K
(printed in green)
wall thickness .049"
for underground service (as well as plumbing, heating and gas lines) - available in soft or hard temper
1/2" copper pipe shown for comparison purposes

Generated explanation

Three open-ended sections of nominal 1/2-inch copper supply pipe compare Types M, L, and K, each with a .625-inch outside diameter. Their wall thicknesses increase from .028 inch for Type M to .040 inch for Type L and .049 inch for Type K. Identification lettering is shown in red, blue, and green respectively. The annotations identify Type M for general plumbing, not underground, in hard temper only; Type L for general plumbing and heating in soft or hard temper; and Type K for underground service as well as plumbing, heating, and gas lines in soft or hard temper.

Components

Type M copper supply pipe Type L copper supply pipe Type K copper supply pipe

Materials

copper