What is BWG, AWG Gauge etc ?

What is BWG Gauge ?

Wire gauge, the specification of the cross-sectional size of the wire. There are many types of wire gauge, such as Birmingham wire gauge (BWG), Standard wire gauge (SWG), American wire gauge (AWG) etc.

What is AWG Gauge ?

AWG is the abbreviation of American wire gauge. It is a standard for distinguishing wire diameters, also known as Brown & Sharpe wire gauge.

Why We Should Know AWG, BWG

AWG, BWG are used to determine the wall thickness of heat exchanger tube. So if your job is related to tubes, you need to know what is the tube gauge.

The Representation of Wire Gauge in Description of Stainless Steel Tubing

For example, the description is Stainless Steel Tubing, ASTM A213 TP316/316L 1″ BWG 14.
After checking the belowing table, we will know the tube dimension is o.d 25.4mm x 2.11mm .
If you have any questions or doubt, please don’t hesitate to contact us.

Comparison Table of Commonly Used Tube Gauge Numbers and Diameters (inches, mm)

Gauge No.	SWG		BWG		BG		AWG
	SWG		BWG		BG		AWG
	Inch	mm	Inch	mm	Inch	mm	Inch	mm
4/0	0.4	10.16	0.454	11.532	0.5416	13.757	0.46	11.684
3/0	0.372	9.449	0.425	10.795	0.5	12.7	0.4096	10.404
2/0	0.348	8.839	0.38	9.652	0.4452	11.308	0.3648	9.266
0	0.324	8.23	0.34	8.636	0.3964	10.069	0.3249	8.252
1	0.3	7.62	0.3	7.62	0.3532	8.971	0.2893	7.348
2	0.276	7.01	0.284	7.214	0.3147	7.993	0.2576	6.544
3	0.252	6.401	0.259	6.579	0.2804	7.122	0.2294	5.827
4	0.232	5.893	0.238	6.045	0.2509	6.35	0.2043	5.189
5	0.212	5.385	0.22	5.588	0.2225	5.652	0.1819	4.621
6	0.192	4.877	0.203	5.156	0.1981	5.032	0.162	4.115
7	0.176	4.47	0.18	4.572	0.1764	4.481	0.1443	3.665
8	0.16	4.064	0.165	4.191	0.157	3.988	0.1285	3.264
9	0.144	3.658	0.148	3.759	0.1398	3.551	0.1144	2.906
10	0.128	3.251	0.134	3.404	0.125	3.175	0.1019	2.583
11	0.116	2.946	0.12	3.048	0.1113	2.827	0.0907	2.305
12	0.104	2.642	0.109	2.769	0.0991	2.517	0.0808	2.053
13	0.092	2.337	0.095	2.413	0.0882	2.24	0.072	1.828
14	0.08	2.032	0.083	2.108	0.0785	1.994	0.0641	1.628
15	0.072	1.829	0.072	1.829	0.0699	1.775	0.0571	1.45
16	0.064	1.626	0.065	1.651	0.0625	1.588	508	1.291
17	0.056	1.422	0.058	1.473	0.0556	1.412	0.0453	1.15
18	0.048	1.219	0.049	1.245	0.0495	1.257	0.0403	1.024
19	0.04	1.016	0.042	1.067	0.044	1.118	0.0359	0.912
20	0.036	0.914	0.035	0.889	0.0392	0.996	0.032	0.812
21	0.032	0.813	0.032	0.813	0.0349	0.887	0.0285	0.723
22	0.028	0.711	0.028	0.711	0.03125	0.794	0.02535	0.644
23	0.024	0.61	0.025	0.635	0.02782	0.707	0.02257	0.573
24	0.022	0.559	0.022	0.559	0.02476	0.629	0.0201	0.511
25	0.02	0.508	0.02	0.508	0.02204	0.56	0.0179	0.455
26	0.018	0.457	0.018	0.457	0.01961	0.498	0.01594	0.405
27	0.0164	0.417	0.016	0.406	0.01745	0.443	0.0142	0.361
28	0.0148	0.376	0.014	0.356	0.01563	0.397	0.01264	0.321
29	0.0136	0.345	0.013	0.33	0.0139	0.353	0.01126	0.286
30	0.0124	0.315	0.012	0.305	0.0123	0.312	0.01003	0.255
31	0.0116	0.295	0.01	0.254	0.011	0.279	0.00893	0.227
32	0.0108	0.274	0.009	0.229	0.0098	0.249	0.00795	0.202

What is BWG, AWG Gauge

What is BWG, AWG Gauge etc ?