Metric Hydraulic Tube Sizes and Maximum Working Pressures

Tube OD (mm)	Wall Thickness (mm)	Tube ID (mm)	Weight (kg/m) ST 37.4 \| 1.4571	ST 37.4 Static (BAR)	ST 37.4 Dynamic (BAR)	Stainless 1.4571 Static (BAR)
04	0.5	1	0.047 \| 0.048	313	274	326
04	1	2	0.075 \| 0.076	522	502	544
06	1	4	0.123 \| 0.125	389	374	406
06	1.5	3	0.166 \| 0.169	549	528	572
06	2	2	0.197 \| 0.200	692	665	721
08	1	6	0.222 \| 0.225	333	289	347
08	1.5	5	0.240 \| 0.244	431	441	449
08	2	4	0.296 \| 0.301	549	528	572
08	2.5	3	0.339 \| 0.344	658	632	686
10	1	8	0.222 \| 0.225	282	249	294
10	1.5	7	0.314 \| 0.319	373	358	389
10	2	6	0.395 \| 0.401	478	460	489
10	2.5	5	0.462 \| 0.469	576	553	601
10	3	4	0.518 \| 0.526	666	641	694
12	1	10	0.271 \| 0.275	235	210	245
12	1.5	9	0.388 \| 0.394	353	305	368
12	2	8	0.493 \| 0.500	409	393	426
12	2.5	7	0.586 \| 0.595	495	476	516
12	3	6	0.666 \| 0.676	576	553	601
12	3.5	5	0.734 \| 0.745	651	627	679
14	1.5	11	0.462 \| 0.469	302	265	315
14	2	10	0.592 \| 0.601	403	343	420
14	2.5	9	0.709 \| 0.720	434	417	452
14	3	8	0.814 \| 0.826	507	487	529
14	3.5	7	0.906 \| 0.920	576	553	601
15	1.5	12	0.499 \| 0.507	282	249	294
15	2	11	0.641 \| 0.651	376	323	392
15	2.5	10	0.771 \| 0.782	409	393	426
15	3	9	0.888 \| 0.902	478	460	498
16	1	14	0.370 \| 0.373	176	161	183
16	1.5	13	0.536 \| 0.544	264	234	275
16	2	12	0.691 \| 0.702	353	305	368
16	2.5	11	0.837 \| 0.845	386	372	402
16	3	10	0.962 \| 0.977	452	435	471
18	1	16	0.419 \| 0.423	157	143	163
18	1.5	15	0.610 \| 0.619	235	210	245
18	2	14	0.789 \| 0.801	313	274	326
18	2.5	13	0.956 \| 0.971	392	335	409
18	3	12	1.111 \| 1.128	409	393	426
18	4	10	1.381 \| 1.401	522	502	544
20	2	16	0.888 \| 0.902	282	249	294
20	2.5	15	1.079 \| 1.095	353	305	368
20	3	14	1.258 \| 1.277	373	358	389
20	3.5	13	1.424 \| 1.446	426	410	444
20	4	12	1.578 \| 1.602	478	460	498
22	1.5	19	0.758 \| 0.764	192	174	200
22	2	18	0.986 \| 1.001	256	228	267
22	2.5	17	1.202 \| 1.220	320	280	334
22	3	16	1.406 \| 1.427	385	329	401
22	4	14	1.766 \| 1.802	441	424	459
22	5	12	2.367 \| 2.402	532	512	555
25	2	21	1.134 \| 1.151	226	202	236
25	2.5	20	1.387 \| 1.408	282	249	294
25	3	19	1.628 \| 1.653	338	294	352
25	4	17	2.072 \| 2.104	394	379	411
25	4.5	16	2.275 \| 2.310	437	420	456
25	5	15	2.466 \| 2.490	478	460	498
28	2	24	1.282 \| 1.301	201	182	210
28	2.5	23	1.572 \| 1.596	252	224	263
28	3	22	1.850 \| 1.878	302	265	315
28	4	20	2.368 \| 2.403	403	343	420
28	5	18	2.836 \| 2.878	434	417	452
30	2	26	1.381 \| 1.402	168	171	175
30	2.5	25	1.695 \| 1.721	235	210	245
30	3	24	1.998 \| 2.028	282	249	294
30	4	22	2.565 \| 2.604	376	323	392
30	5	20	3.083 \| 3.110	409	393	426
32	3	26	2.146 \| 2.177	265	235	275
32	4	24	2.762 \| 2.803	353	305	368
32	5	22	3.329 \| 3.378	387	372	403
35	2	31	2.189 \| 2.222	161	147	168
35	2.5	30	2.004 \| 2.034	201	182	210
35	3	29	2.367 \| 2.403	242	216	252
35	4	27	3.058 \| 3.104	322	281	336
38	3	32	2.589 \| 2.628	223	200	232
38	4	30	3.354 \| 3.405	297	261	310
38	5	28	4.069 \| 4.131	371	319	387
42	3	36	2.885 \| 2.929	201	182	210
42	4	34	3.749 \| 3.806	269	238	280

* ST 37.4 = Carbon Steel, Stainless 1.4571 = Stainless Steel

Stainless Steel Chart

Carbon Steel Chart

Steel Tube Inventory

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