Metric Carbon Steel Hydraulic Tube Sizes and Maximum Working Pressures

Tube OD (mm)	Wall Thickness (mm)	Tube ID (mm)	Weight (kg/m)	Static Pressure (BAR)	Dynamic Pressure (BAR)
04	0.5	1	0.047	313	274
04	1	2	0.075	522	502
06	1	4	0.123	389	374
06	1.5	3	0.166	549	528
06	2	2	0.197	692	665
08	1	6	0.222	333	289
08	1.5	5	0.240	431	441
08	2	4	0.296	549	528
08	2.5	3	0.339	658	632
10	1	8	0.222	282	249
10	1.5	7	0.314	373	358
10	2	6	0.395	478	460
10	2.5	5	0.462	576	553
10	3	4	0.518	666	641
12	1	10	0.271	235	210
12	1.5	9	0.388	353	305
12	2	8	0.493	409	393
12	2.5	7	0.586	495	476
12	3	6	0.666	576	553
12	3.5	5	0.734	651	627
14	1.5	11	0.462	302	265
14	2	10	0.592	403	343
14	2.5	9	0.709	434	417
14	3	8	0.814	507	487
14	3.5	7	0.906	576	553
15	1.5	12	0.499	282	249
15	2	11	0.641	376	323
15	2.5	10	0.771	409	393
15	3	9	0.888	478	460
16	1	14	0.370	176	161
16	1.5	13	0.536	264	234
16	2	12	0.691	353	305
16	2.5	11	0.837	386	372
16	3	10	0.962	452	435
18	1	16	0.419	157	143
18	1.5	15	0.610	235	210
18	2	14	0.789	313	274
18	2.5	13	0.956	392	335
18	3	12	1.111	409	393
18	4	10	1.381	522	502
20	2	16	0.888	282	249
20	2.5	15	1.079	353	305
20	3	14	1.258	373	358
20	3.5	13	1.424	426	410
20	4	12	1.578	478	460
22	1.5	19	0.758	192	174
22	2	18	0.986	256	228
22	2.5	17	1.202	320	280
22	3	16	1.406	385	329
22	4	14	1.766	441	424
22	5	12	2.367	532	512
25	2	21	1.134	226	202
25	2.5	20	1.387	282	249
25	3	19	1.628	338	294
25	4	17	2.072	394	379
25	4.5	16	2.275	437	420
25	5	15	2.466	478	460
28	2	24	1.282	201	182
28	2.5	23	1.572	252	224
28	3	22	1.850	302	265
28	4	20	2.368	403	343
28	5	18	2.836	434	417
30	2	26	1.381	168	171
30	2.5	25	1.695	235	210
30	3	24	1.998	282	249
30	4	22	2.565	376	323
30	5	20	3.083	409	393
32	3	26	2.146	265	235
32	4	24	2.762	353	305
32	5	22	3.329	387	372
35	2	31	2.189	161	147
35	2.5	30	2.004	201	182
35	3	29	2.367	242	216
35	4	27	3.058	322	281
38	3	32	2.589	223	200
38	4	30	3.354	297	261
38	5	28	4.069	371	319
42	3	36	2.885	201	182
42	4	34	3.749	269	238

* ST 37.4 = Carbon Steel