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.

Winland Plumbing Tubing (Type K)

The copper tube specifications refer to ASTM B88 type K, used for water supply system. The datas include copper tube outside diameter, temper, wall thickness, and etc. of both imperial and metric units.

For plumbing copper tubing, people used to classify the tubes by wall thickness. There are type K, type L, type M and type DWV copper tubes. Type K tubes have thickest thickness than type M L tube.

The size of wall thickness effects copper tube's mechanical strength, working pressure. The thickest wall makes type K copper tubes the most durable & reliable type.

Normally tubes of this type are applied for underground watersupply system's main pipeline, hotwater pipline, sprinkler systems of commercial plumbing projects.

Winland's copper tubes are manufacturered with pure copper (C12200, 99.9% cu plus 0.015~0.040% p), outside diameter of the tubes are the same, it means they could use with same size copper fittings for soldering and connection.

Dimensions listed below are for rigid temper, aslo known as hard temper (H58) copper tube, supply in straight length form (5.8 meters or as request). If you need customized dimensions or annealed temper products, please feel free to email us.

Type K Plumbing Copper Tube Size Chart (ASTM B88)

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Straight Rigid Tubes
Nominal Tube SizeActual Outside DiameterActual Wall ThicknessTheoretical WeightActual Outside DiameterActual Wall ThicknessTheoretical WeightTube Temper
1/4 inch3/8 inch0.035 inch0.145 lb/ft9.53 mm0.889 mm0.216 kg/mH58
3/8 inch1/2 inch0.049 inch0.269 lb/ft12.70 mm1.245 mm0.400 kg/mH58
1/2 inch5/8 inch0.049 inch0.344 lb/ft15.88 mm1.245 mm0.512 kg/mH58
5/8 inch3/4 inch0.049 inch0.418 lb/ft19.05 mm1.245 mm0.622 kg/mH58
3/4 inch7/8 inch0.065 inch0.641 lb/ft22.23 mm1.651 mm0.954 kg/mH58
1 inch1-1/8 inch0.065 inch0.839 lb/ft28.58 mm1.651 mm1.248 kg/mH58
1-1/4 inch1-3/8 inch0.065 inch1.037 lb/ft34.93 mm1.651 mm1.543 kg/mH58
1-1/2 inch1-5/8 inch0.072 inch1.361 lb/ft41.28 mm1.829 mm2.026kg/mH58
2 inch2-1/8 inch0.083 inch2.063 lb/ft53.98 mm2.108 mm3.070 kg/mH58
2-1/2 inch2-5/8 inch0.095 inch2.926 lb/ft66.68 mm2.413 mm4.355 kg/mH58
3 inch3-1/8 inch0.109 inch4.003 lb/ft79.38 mm2.769 mm5.957 kg/mH58
3-1/2 inch3-5/8 inch0.120 inch5.120 lb/ft92.08 mm3.048 mm7.620 kg/mH58
4 inch4-1/8 inch0.134 inch6.511 lb/ft104.78 mm3.404 mm9.690 kg/mH58
5 inch5-1/8 inch0.160 inch9.671 lb/ft130.18 mm4.064 mm14.392 kg/mH58
6 inch6-1/8 inch0.192 inch13.868 lb/ft155.58 mm4.877 mm20.638 kg/mH58
8 inch8-1/8 inch0.271 inch25.909 lb/ft206.38 mm6.883 mm38.558 kg/mH58
10 inch10-1/8 inch0.338 inch40.269 lb/ft257.18 mm8.585 mm59.928 kg/mH58
12 inch12-1/8 inch0.405 inch57.783 lb/ft307.98 mm10.289 mm85.991 kg/mH58

K Product List

Part NumberOutside DiameterWall ThicknessTheoretcial Weight
15.88mm1.25mm0.51kg/m
22.23mm1.65mm0.95kg/m
Part#: B88K16DP | ASTM B88 | LWC | K |O60 | Plumbing Copper Tube
15.88mm1.25mm0.51kg/m
28.58mm1.65mm1.25kg/m
Part#: B88K19DP | ASTM B88 | LWC | K |O60 | Plumbing Copper Tube
19.05mm1.25mm0.62kg/m
Part#: B88K22DP | ASTM B88 | LWC | K |O60 | Plumbing Copper Tube
22.23mm1.65mm0.95kg/m
Part#: B88K29DP | ASTM B88 | LWC | K |O60 | Plumbing Copper Tube
28.58mm1.65mm1.25kg/m
9.53mm0.89mm0.22kg/m
12.70mm1.25mm0.40kg/m
Part#: B88K308ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
307.98mm10.29mm85.99kg/m
Part#: B88K257ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
257.18mm8.59mm59.93kg/m
Part#: B88K206ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
206.38mm6.88mm38.56kg/m
Part#: B88K156ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
155.58mm4.88mm20.64kg/m
Part#: B88K130ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
130.18mm4.06mm14392.00kg/m
Part#: B88K105ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
104.78mm3.40mm9.69kg/m
Part#: B88K92ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
92.08mm3.05mm7.62kg/m
Part#: B88K79ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
79.38mm2.77mm5.96kg/m
Part#: B88K67ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
66.68mm2.41mm4.36kg/m
Part#: B88K54ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
53.98mm2.11mm3.07kg/m
Part#: B88K41ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
41.28mm1.83mm2.03kg/m
Part#: B88K35ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
34.93mm1.65mm1.54kg/m
Part#: B88K29ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
28.58mm1.65mm1.25kg/m
Part#: B88K22ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
22.23mm1.65mm0.95kg/m
Part#: B88K19ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
19.05mm1.25mm0.62kg/m
Part#: B88K16ZG | ASTM B88 | Straight pipe | K |H58 | Plumbing Copper Tube
15.88mm1.25mm0.51kg/m

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