Stainless steel capillary and semi-finished needle tubes are essential components in various industries due to their unique properties and applications. These tubes are characterized by their small diameter and precise manufacturing, making them suitable for a range of uses including medical devices, fluid delivery systems, and laboratory equipment.
Stainless steel, known for its resistance to corrosion and durability, ensures that these tubes maintain their integrity in demanding environments. The capillary tubes are typically used for applications requiring fine fluid control, while semi-finished needle tubes serve as versatile components in further manufacturing processes.
Both types of tubes can be customized in terms of length, diameter, and wall thickness to meet specific requirements. Their precision manufacturing allows for high performance in tasks that demand accuracy, such as in injections or fluid analysis. Overall, both stainless steel capillary and semi-finished needle tubes are vital in delivering reliability and efficiency across multiple sectors.
Medical Tubes
Tubes for a wide range of medical applications
Yuhong's program of medical tubes covers stainless steel tubing for cardiovascular and diagnostic applications, dental and surgical instruments as well as medical tubes for reconstruction, trauma and spinal use. Our in-house production of medical tubes allows for tailor-made sizes in small batches.
Medical tube materials (other grades can be offered on request)
Tolerance of SS Needle Tube
Gauge No. | OD, in. | OD Tolerance, in.(±) | Nominal Wall, in. | Wall Tolerance, in. (±) |
6 | 0.203 | 0.001 | 0.015 | 0.001 |
7 | 0.180 | 0.001 | 0.015 | 0.001 |
8 | 0.165 | 0.001 | 0.015 | 0.001 |
9 | 0.148 | 0.001 | 0.015 | 0.001 |
10 | 0.134 | 0.001 | 0.014 | 0.001 |
11 | 0.120 | 0.001 | 0.013 | 0.001 |
12 | 0.109 | 0.001 | 0.012 | 0.001 |
13 | 0.095 | 0.001 | 0.012 | 0.001 |
14 | 0.083 | 0.001 | 0.010 | 0.001 |
15 | 0.072 | 0.0005 | 0.009 | 0.0005 |
16 | 0.065 | 0.0005 | 0.009 | 0.0005 |
17 | 0.059 | 0.0005 | 0.009 | 0.0005 |
18 | 0.050 | 0.0005 | 0.0085 | 0.0005 |
19 | 0.0425 | 0.0005 | 0.00775 | 0.0005 |
20 | 0.0355 | +0.0005/-0.000 | 0.00625 | +0.000/-0.0005 |
21 | 0.032 | +0.0005/-0.000 | 0.00625 | +0.000/-0.0005 |
22 | 0.028 | +0.0005/-0.000 | 0.00625 | +0.000/-0.0005 |
23 | 0.025 | +0.0005/-0.000 | 0.00625 | +0.000/-0.0005 |
24 | 0.022 | +0.0005/-0.000 | 0.00525 | +0.000/-0.0005 |
25 | 0.020 | +0.0005/-0.000 | 0.00525 | +0.000/-0.0005 |
26 | 0.018 | +0.0005/-0.000 | 0.00425 | +0.000/-0.0005 |
27 | 0.016 | +0.0005/-0.000 | 0.00425 | +0.000/-0.0005 |
28 | 0.014 | +0.0005/-0.000 | 0.0035 | 0.00025 |
29 | 0.013 | +0.0005/-0.000 | 0.003 | 0.00025 |
30 | 0.012 | +0.0005/-0.000 | 0.003 | 0.00025 |
31 | 0.010 | +0.0005/-0.000 | 0.0025 | 0.00025 |
32 | 0.009 | +0.0005/-0.000 | 0.0025 | 0.00025 |
33 | 0.008 | +0.0005/-0.000 | 0.002 | 0.00025 |
Chemical Composition of SS Needle Tube
Grade | UNS | C | Mn | P | S | Si | Cr | Ni |
TP304 | S30400 | 0.08 max. | 2.00 max. | 0.040 max. | 0.030 max. | 0.75 max. | 18.0-20.0 | 8.0-11.0 |
Tensile Requirements of SS Needle Tube
Grade | Tensile strength, ksi (MPa) |
TP304 | 150-200(1030-1370) |