Type K, L, M and DWV copper tubes are designated in ASTM standard sizes. Copper pipe of these types has an actual outside diameter that 1/8 inch larger than norminal size. For example, 1/4 norminal tyoe K pipe's actual O.D. is 3/8 inches (1/4+1/8). For same norminal size, type K copper pipe's wall thickness is larger than type L copper pipe, and type L copper pipe's wall thickness is thicker than type M copper pipe.

Type M Copper Pipe Applications

  • Underground Water Services -- Type M hard copper tube for straight lengths joined with fittings.
  • Water Distribution Systems -- Type M copper tube for above and below ground
  • Chilled Water Mains -- Use type M for all sizes.
  • Heating -- For radiant panel and hydronic heating and for snow melting systems, type M copper tube (straight lengths) are used. For water heating and low pressure steam, type M for all sizes are used.
  • Fire Sprinkler Systems -- Use type M hard copper pipe, where bending is required. Types K, L and M copper pipe are all accepted by NFPA.
  • Compressed Air -- Use type M copper pipe as per requried internal working pressures.
  • Low Temperature Applications

O60 Copper Tube Size List

Basic Info O.D. inches O.D. mm W.T. inches W.T. mm Weight Application & Form Standard

Norminal Size: 1

O60

Item No.: B88M29WXP

1.125in 28.580mm 0.035in 0.889mm 0.691kg/m

Plumbing Copper Tube

Copper pancake coils

ASTM B88

Norminal Size: 3/4

O60

Item No.: B88M22WXP

0.875in 22.230mm 0.032in 0.813mm 0.489kg/m

Plumbing Copper Tube

Copper pancake coils

ASTM B88

Norminal Size: 1/2

O60

Item No.: B88M16WXP

0.625in 15.880mm 0.028in 0.711mm 0.303kg/m

Plumbing Copper Tube

Copper pancake coils

ASTM B88

Norminal Size: 3/8

O60

Item No.: B88M13WXP

0.500in 12.700mm 0.025in 0.635mm 0.215kg/m

Plumbing Copper Tube

Copper pancake coils

ASTM B88

Norminal Size: 1

O60

Item No.: B88M29DP

1.125in 28.580mm 0.035in 0.889mm 0.691kg/m

Plumbing Copper Tube

LWC

ASTM B88

Norminal Size: 3/4

O60

Item No.: B88M22DP

0.875in 22.230mm 0.032in 0.813mm 0.489kg/m

Plumbing Copper Tube

LWC

ASTM B88

Norminal Size: 1/2

O60

Item No.: B88M16DP

0.625in 15.880mm 0.028in 0.711mm 0.303kg/m

Plumbing Copper Tube

LWC

ASTM B88

Norminal Size: 3/8

O60

Item No.: B88M13DP

0.500in 12.700mm 0.025in 0.635mm 0.215kg/m

Plumbing Copper Tube

LWC

ASTM B88

Norminal Size: 3/8

O60

Item No.: B88M13DP

0.500in 12.700mm 0.025in 0.635mm 0.215kg/m

Plumbing Copper Tube

LWC

ASTM B88

Norminal Size: 12

H58

Item No.: B88M308ZG

12.125in 307.980mm 0.254in 6.452mm 54.628kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 10

H58

Item No.: B88M257ZG

10.125in 257.180mm 0.212in 5.385mm 38.074kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 8

H58

Item No.: B88M206ZG

8.125in 206.380mm 0.170in 4.318mm 24.500kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 6

H58

Item No.: B88M156ZG

6.125in 155.580mm 0.122in 3.099mm 13.269kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 5

H58

Item No.: B88M130ZG

5.125in 130.180mm 0.109in 2.769mm 9.907kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 4

H58

Item No.: B88M105ZG

4.125in 104.780mm 0.095in 2.413mm 6.936kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 3 1/2

H58

Item No.: B88M92ZG

3.625in 92.080mm 0.083in 2.108mm 5.326kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 3

H58

Item No.: B88M79ZG

3.125in 79.380mm 0.072in 1.829mm 3.983kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 2 1/2

H58

Item No.: B88M67ZG

2.625in 66.680mm 0.065in 1.651mm 3.015kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 2

H58

Item No.: B88M54ZG

2.125in 53.980mm 0.058in 1.473mm 2.172kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 1 1/2

H58

Item No.: B88M41ZG

1.625in 41.280mm 0.049in 1.245mm 1.400kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 1 1/4

H58

Item No.: B88M35ZG

1.375in 34.929mm 0.042in 1.067mm 0.682kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 1

H58

Item No.: B88M29ZG

1.125in 28.580mm 0.035in 0.889mm 0.690kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 3/4

H58

Item No.: B88M22ZG

0.875in 22.230mm 0.032in 0.813mm 0.488kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 1/2

H58

Item No.: B88M16ZG

0.625in 15.880mm 0.028in 0.711mm 0.301kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88

Norminal Size: 3/8

H58

Item No.: B88M13ZG

0.500in 12.700mm 0.025in 0.635mm 0.215kg/m

Plumbing Copper Tube

Straight pipe

ASTM B88