Can I order custom sizes and lengths?

We can often use a range of services to alter existing products to meet your specifications. Please contact us to discuss your specific requirements.

What is the difference between thin-wall and standard tubes?

Thin-wall tubes have a reduced wall thickness, making them ideal for applications needing precision and flexibility.

Are your products ISO-certified?

Yes, Coopers Needle Works is ISO 9001 certified, ensuring high-quality and consistent standards across all products.

Can I request a sample before placing a large order?

Yes, we offer samples to help ensure that the product meets your needs.

Precision Stainless Steel Tubing & Hypodermic Tube Stockists

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Coopers Needle Works (CNW) is a leading UK supplier of precision stainless steel tubing and medical-grade hypodermic tubes. Our extensive inventory spans diameters from 0.2mm to 20.0mm, available in high-performance 316 and 304 stainless steel grades.

While our standard supply is in one-meter lengths, we specialize in a precision cut-to-length service. Our standard cutting tolerance is +/-0.25mm, though our engineering team can achieve even tighter tolerances to meet your bespoke specifications and micro-bore requirements.

Standard Size Stainless Tubing

Gauge	OD mm	ID mm	Wall mm	OD″	ID″	Wall″
36 Gauge	0.203	0.101	0.051	0.008	0.004	0.002
34 Gauge	0.229	0.127	0.051	0.009	0.005	0.002
33 Gauge	0.254	0.152	0.051	0.01	0.006	0.002
31 Gauge	0.279	0.102	0.089	0.011	0.004	0.004
30 Gauge	0.305	0.152	0.077	0.012	0.006	0.003
29 Gauge	0.33	0.178	0.076	0.013	0.007	0.003
27 Gauge*	0.406	0.203	0.102	0.016	0.008	0.004
26 Gauge*	0.457	0.254	0.102	0.018	0.01	0.004
25 Gauge*	0.51	0.254	0.128	0.02	0.01	0.005
24 Gauge*	0.56	0.305	0.128	0.022	0.012	0.005
23 Gauge*	0.64	0.33	0.153	0.025	0.013	0.006
22 Gauge*	0.71	0.406	0.152	0.028	0.016	0.006
21 Gauge*	0.81	0.51	0.15	0.032	0.02	0.006
20 Gauge*	0.89	0.584	0.153	0.035	0.023	0.006
19 Gauge*	1.1	0.685	0.208	0.043	0.027	0.008
18 Gauge*	1.24	0.85	0.195	0.049	0.033	0.008
17 Gauge*	1.47	1.1	0.185	0.058	0.043	0.008
16 Gauge*	1.65	1.2	0.225	0.065	0.047	0.009
15 Gauge*	1.82	1.35	0.235	0.072	0.053	0.01
14 Gauge*	2.05	1.55	0.25	0.081	0.061	0.01
13 Gauge*	2.34	1.77	0.285	0.092	0.07	0.011
12 Gauge*	2.65	2	0.325	0.104	0.079	0.013
12 Gauge Special	2.65	2.1	0.275	0.104	0.083	0.011
11 Gauge*	2.95	2.3	0.325	0.116	0.091	0.013
10 Gauge*	3.3	2.5	0.4	0.129	0.098	0.016
9 Gauge	3.69	2.87	0.41	0.145	0.113	0.016
8 Gauge	4.04	3.28	0.38	0.159	0.129	0.015
7 Gauge	4.45	3.69	0.38	0.175	0.145	0.015
6 Gauge	4.98	4.07	0.455	0.196	0.16	0.018
5 Gauge	5.46	4.55	0.455	0.215	0.179	0.018
4 Gauge	6	5.08	0.46	0.236	0.2	0.018

*denotes also available in coil

View full product list PDF

Thin Wall Stainless Steel Tubing

GAUGE	OD mm	ID mm	Wall mm	OD″	ID″	Wall″
30 Gauge T/W	0.305	0.19	0.058	0.012	0.007	0.003
26 Gauge T/W	0.457	0.305	0.076	0.018	0.012	0.003
25 Gauge T/W	0.51	0.305	0.103	0.02	0.012	0.004
24 Gauge T/W	0.56	0.381	0.09	0.022	0.015	0.004
23 Gauge T/W	0.635	0.406	0.115	0.025	0.016	0.005
22 Gauge T/W	0.71	0.51	0.1	0.028	0.02	0.004
21 Gauge T/W	0.81	0.635	0.088	0.032	0.025	0.004
20 Gauge T/W	0.89	0.66	0.115	0.035	0.026	0.005
19 Gauge T/W	1.067	0.81	0.129	0.042	0.032	0.005
18 Gauge T/W	1.24	0.91	0.165	0.049	0.036	0.007
17 Gauge T/W	1.47	1.14	0.165	0.058	0.045	0.007
16 Gauge T/W	1.65	1.39	0.13	0.065	0.055	0.005

Permissible dimension variations: WHD and WBA OD/ID tolerances 0.02"

See full product list as PDF

Metric Size Stainless Steel Tubing

OD mm	ID mm	Wall mm	OD″	ID″	Wall″
2	1	0.5	0.079	0.039	0.02
2	1.5	0.25	0.079	0.059	0.01
2.5	1.5	0.5	0.099	0.059	0.02
3	2.4	0.3	0.118	0.095	0.012
4	2	1	0.157	0.079	0.039
4.5	3.5	0.5	0.177	0.137	0.02
5	2	1.5	0.197	0.079	0.059
5	3	1	0.197	0.118	0.04
5	3.5	0.75	0.197	0.137	0.03
5	4	0.5	0.197	0.157	0.02
5	4.5	0.25	0.197	0.177	0.01
6	2	2	0.236	0.079	0.08

View our full product list as a PDF

Fractional Size Stainless Steel Tubing

Fractional Size	OD mm	ID mm	Wall mm	OD″	ID″	Wall″
¼″ x16gauge	6.35	3.1	1.625	0.25	0.122	0.064
¼″ x14gauge	6.35	2.28	2.035	0.25	0.0898	0.08
5/16″ x25gauge	7.94	6.93	0.505	0.3125	0.2728	0.02
5/16″ x24gauge	7.94	6.83	0.555	0.3125	0.2689	0.022
5/16″ x22gauge	7.94	6.53	0.705	0.3125	0.2571	0.028
5/16″ x21gauge	7.94	6.32	0.81	0.3125	0.2488	0.032
5/16″ x20gauge	7.94	6.12	0.91	0.3125	0.2409	0.036
5/16″ x18gauge	7.94	5.51	1.215	0.3125	0.2169	0.048
5/16″ x16gauge	7.94	4.68	1.63	0.3125	0.1843	0.064
3/8″ x25gauge	9.53	8.51	0.51	0.375	0.335	0.02
3/8″ x22gauge	9.53	8.11	0.71	0.375	0.3193	0.028
3/8″ x20gauge	9.53	7.7	0.915	0.375	0.3031	0.036

View our full product list as a PDF

Special Size Stainless Steel Tubing

OD mm	ID mm	Wall mm	OD″	ID″	Wall″
0.635	0.36/0.38	0.138/0.128	0.025	0.0145	0.005
0.76	0.46	0.15	0.03	0.018	0.006
0.81	0.31	0.25	0.032	0.012	101
0.89	0.7	0.095	0.035	0.0276	0.004
0.89/0.90	0.71/0.73	0.090/0.085	0.035	0.028	0.004
0.9	0.43	0.235	0.035	0.017	0.009
0.96/0.99	0.73/0.75	0.115/0.120	0.038	0.029	0.005
1.02	0.81	0.105	0.04	0.0319	0.004
1.1	0.635	0.233	0.043	0.025	0.009
1.0/1.1	0.73/0.75	0.135/0.175	0.041	0.029	0.006
1.1	0.9	0.1	0.043	0.0354	0.004
1.18/1.16	0.71/0.73	0.235/0.215	0.046	0.028	0.009

Permissible dimension variations: outside diameter +/-0.005″ +/-0.13mm. Wall thickness +/- 15%

At Coopers Needle Works, we bridge the gap between industrial and medical grade tubing requirements. Our inventory features high-tolerance heavy wall industrial tubing for structural applications alongside precision hypodermic tubing and ultra-thin wall (UTW) variants for micro-fluidic and surgical use. All products are available in 304 and 316 grades, ensuring the highest standards of corrosion resistance and durability for global manufacturing.