VALICALC · TECHNICAL REFERENCE

Copper Tube Size Chart: K & L

Compare selected Type K and L copper tube OD, wall and calculated bore in metric or inches. Keep historical dimensions separate from current product ratings.

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Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.

SELECTED REFERENCE

0.5 in Type K

Calculated nominal bore
13.386 mm
Nominal / average OD
15.875 mm
Source wall thickness
1.245 mm
All fields & cell provenance
Product family
Type K
Nominal inch designation
0.5
Calculated bore area
140.727 mm²

v1.3.0 · verified 2026-10-07

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Review the selected values and units in the calculator before applying them.

Use calculated bore →Use bore in Pump TDH →Use bore in Hazen-Williams →

0.5 in Type K13.386 mmBack to answer ↑

Explore the verified data

6 matching rows · 6 in this subset

Copper Tube Size Chart: K & L, metric display
Product / tube designationCalculated nominal boreNominal / average ODSource wall thicknessActions
0.5 in Type K13.386 mm15.875 mm1.245 mm
0.5 in Type L13.843 mm15.875 mm1.016 mm
0.75 in Type K18.923 mm22.225 mm1.651 mm
0.75 in Type L19.939 mm22.225 mm1.143 mm
1 in Type K25.273 mm28.575 mm1.651 mm
1 in Type L26.035 mm28.575 mm1.27 mm

0.5 in Type K

Calculated nominal bore
13.386 mm
Nominal / average OD
15.875 mm
Source wall thickness
1.245 mm
More dimensions
Product family
Type K
Nominal inch designation
0.5
Calculated bore area
140.727 mm²

0.5 in Type L

Calculated nominal bore
13.843 mm
Nominal / average OD
15.875 mm
Source wall thickness
1.016 mm
More dimensions
Product family
Type L
Nominal inch designation
0.5
Calculated bore area
150.505 mm²

0.75 in Type K

Calculated nominal bore
18.923 mm
Nominal / average OD
22.225 mm
Source wall thickness
1.651 mm
More dimensions
Product family
Type K
Nominal inch designation
0.75
Calculated bore area
281.235 mm²

0.75 in Type L

Calculated nominal bore
19.939 mm
Nominal / average OD
22.225 mm
Source wall thickness
1.143 mm
More dimensions
Product family
Type L
Nominal inch designation
0.75
Calculated bore area
312.246 mm²

1 in Type K

Calculated nominal bore
25.273 mm
Nominal / average OD
28.575 mm
Source wall thickness
1.651 mm
More dimensions
Product family
Type K
Nominal inch designation
1
Calculated bore area
501.653 mm²

1 in Type L

Calculated nominal bore
26.035 mm
Nominal / average OD
28.575 mm
Source wall thickness
1.27 mm
More dimensions
Product family
Type L
Nominal inch designation
1
Calculated bore area
532.36 mm²

How to use this data

Retain the stated nominal size, OD and Type K/L wall. Convert inches by 25.4, derive ID=OD−2wall and circular bore area. Nominal size does not equal OD or ID.

    CHECK THE METHOD

    Worked example

    Nominal 1/2 in Type L: OD 0.625 in and wall 0.040 in give nominal ID 0.545 in = 13.843 mm; Type K at the same size has thicker wall.

    Common lookup questions

    What should I confirm before using this lookup?

    Historical dimensions are an identification aid, not current product certification or a permitted-use/code determination. Verify the actual tube designation, wall and supplier drawing.

    TRACEABLE DATA

    Sources, scope & verification

    Dataset v1.3.0
    Last verified:

    Six selected nominal dimensional examples from the historical government-published K/L table. Type M, ACR and pressure ratings are outside this verified subset.

    Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.

    Selected historical copper K/L nominal dimensions ↗

    Type B · Oregon OSHA / US OSHA · Table H-24; published dimensional subset, checked 2026-10-07

    Selected government-published facts and dimensional derivations; no paid-standard table reproduced.

    Full provenance & artifact record
    Source checked
    2026-10-07
    Use basis
    public-domain
    Artifact SHA-256
    No retained source artifact hash; see the stated source and verification record.

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