NOMINAL TUBE DIMENSION CHART (BWG)

Selecting Tube Gauge / Thickness and OD values below calculates Nominal Tube ID. (bottom right corner of results)

Please reference our Pop-A-Plug Size Chart for tube plug sizes.

Tube Gauge / Thickness:

Outside Diameter (O.D.):

TABLE TO DETERMINE NOMINAL TUBE ID’S - BIRMINGHAM WIRE GAUGE (BWG)
Wall thickness		Tube OD (in/mm)
BWG	Decimal in/mm	^3/8	^1/2	^5/8	^3/4	^7/8	1	1 ^1/8	1 ^1/4	1 ^3/8	1 ^1/2	1 ^5/8	1 ^3/4	2	2 ^1/2
BWG	Decimal in/mm	9.53	12.70	15.88	19.05	22.23	25.40	28.58	31.75	34.93	38.10	41.28	44.45	50.80	63.50