Copper tubes of type K are thick walled, much thicker than type L and M and are used for domestic water-, service and distribution-, fire protection-, solar-, fuel and oil-, HVAC-, compressed air-, oxygen-, LPG gas-, snow melting-, steam- and vacuum-systems.
For all sizes - outside diameter is 1/8 inch larger than the standard size designation.
Be careful with copper tubes and natural gas. Due to odor additives, moisture content and type of solders used the tubes may crack. Copper tubes is not allowed by code in the US for natural gas distribution.
Copper tubes of type K can be used sweat, flared and compression fittings. Available in hard and soft types.
|Actual Outside Diameter|
|Tolerance on Outside Diameter|
|1 1/4||1 3/8||1.375||0.004||0.0015||0.055||0.006||0.884|
|1 1/2||1 5/8||1.625||0.0045||0.002||0.060||0.006||1.14|
|2 1/2||2 5/8||2.625||0.005||0.002||0.080||0.008||2.48|
|3 1/2||3 5/8||3.625||0.005||0.002||0.100||0.010||4.29|
Standard copper tubes of type L are used for interior above ground plumbing - domestic water-, service and distribution-, fire protection-, solar-, fuel and oil-, HVAC-, compressed air-, LPG gas-, snow melting- and vacuum-systems.
Copper tubes of type L can be used with sweat, compression and flare fittings. Available in hard and soft types.
|Actual Outside Diameter|
|Tolerance on Outside Diameter|
|1 1/4||1 3/8||1.375||0.004||0.0015||0.042||0.004||0.681|
|1 1/2||1 5/8||1.625||0.0045||0.002||0.049||0.005||0.94|
|2 1/2||2 5/8||2.625||0.005||0.002||0.065||0.006||2.03|
|3 1/2||3 5/8||3.625||0.005||0.002||0.083||0.008||3.58|
Copper tubes of type M are used for interior domestic water-, service and distribution-, fire protection-, solar-, fuel and oil-, HVAC-, snow melting- and vacuum-systems. Wall thickness less than type K and L.
Copper tubes type M are normally used with flare fittings. Available in soft and hard types.
1) Annealed tube is suitable for use with flared or compression fittings, and with solder-type fittings, provided rounding and sizing of the tube ends is performed where needed.
2) Drawn temper tube is suitable for use with solder-type fittings. Types A and B tube, in the drawn temper, are suitable for use with certain types and sizes of compression fittings. The standard length for drawn tubes are 20 ft (6.096 m).
The B88 specification covers seamless copper water tube suitable for general plumbing, similar applications for the conveyance of fluids, and commonly used with solder, flared, or compression-type fittings. The type of copper water tube suitable for any particular application is determined by the internal or external fluid pressure, by the installation and service conditions, and by local requirements. Means of joining or bending are also factors that affect the selection of the type of tube to be used.
This specification is the imperial companion of Specification B 88M.
Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.
Standard specifications for seamless copper tube used in Air Conditioning and Refrigeration Field Services.
Dimensions of threadless copper pipes according ASTM B302.
Dimensions of copper tubes ASTM B306 Drain Waste and Vent - DWV.
Dimensions of seamless copper pipes according ASTM B42.
Standard sizes specification for seamless red brass pipes.
Dimensions of copper tubes used in medical gas systems.
Dimensions of seamless copper tubes for natural gas and liquified petroleum.
Water and gas copper tubes according ASTM B88M - type K, L and M - metric units.
ASTM International - American Society for Testing and Materials - is a scientific and technical organization that develops and publishes voluntary standards on the characteristics of material, products, systems and services.
Working pressures of metric sized copper tubes according the BS (British Standard) 2871.
Density, specific heat and thermal conductivity of copper vs. temperature
Bending copper pipe and tube temperatures.
Copper tubes corrosion resistance to different products and chemicals.
Hot water heat carrying capacities in copper tubes type L.
Water velocity in a copper tube should not exceed certain limits to avoid erosion.
Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM B88 Types K, L and M.
Heat loss from uninsulated copper pipes - dimensions ranging 1/2 - 4 inches.
Maximum space between supports aand clips for copper tubes.
Physical characteristics of copper tubes ASTM B 88 type K.
ASTM B88 seamless copper water tubes - working pressures.
Dimensions of EN 1057 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications.
Dimensions of copper tubes according EN 12449.
Dimensions of seamless, round copper tubes for air conditioning and refrigeration piping systems.
Dimensions of seamless round copper and copper alloys tubes for medical gases or vacuum.
Friction head loss (ft/100 ft) vs. water flow in steel, copper and PVC plastic pipes.
Free online design tool for designing hot water heating systems - metric units.
Online design tool for hot water heating systems.
Temperature ranges for bending nickel and nickel alloy pipes and tubes.
The size of pipes, fittings, flanges and valves are often given in inches as NPS - Nominal Pipe Size, or in metric units as DN - 'Diametre Nominal'.
Pipes and tubes are not exactly the same
Water content in steel pipes and copper tubes.
Installing cost ratios for piping materials related to carbon steel pipes.
Solder joints and their pressure ratings according ASME B16.18.
Free online tool for designing water supply systems in buildings.
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