Products Name
Stainless steel capillary tube
Grade
201, 304, 304L, 316, 316L, 904L, 310s, 2205, 2507, 625, 825
Size Range
OD: 0.25 - 28mm
Thickness
0.08 - 1.5mm
Surface Finish
Bright and soft Annealed
Style & Form
Straight or coiled
Length
600 - 3500M/coil without welded joint
Guarantee & Inspection
Chemical composition & physical properties, Eddy Current Test, Hydro Test
Advantage
We are a manufacturer. Lowest Price and Good Quantity
Primary Applications & Usage
- Dynamic instrument signal tubes
- Automatic instrument wire protection tubes (specifically 304 stainless steel capillary tubing)
- Precision optical ruler lines, industrial sensors, and electronic equipment line protection tubes
- Electrical circuit safety protection and thermal instrument capillary protection
- Inner support of hollow core high voltage cables
304 Stainless Steel Capillary Tube Size Specifications
| Stainless Steel capillary tubing (304 Grade & others) |
| Available Grades: 316L, 304, 304L, 2205, 904L, 2507, 625, 825 (MOQ: 500kgs) |
| 0.25*0.08 |
1.4*0.4 |
2.3*0.2 |
3.2*0.25 |
4.5*0.7 |
6*0.45 |
8*0.3 |
11*0.5 |
0.8*0.2 |
10*1 |
| 0.3*0.1 |
1.5*0.1 |
2.3*0.25 |
3.2*0.3 |
4.5*0.75 |
6*0.5 |
8*0.4 |
11*1 |
0.85*0.175 |
12*0.5 |
| 0.4*0.1 |
1.5*0.125 |
2.3*0.3 |
3.2*0.35 |
4.5*0.8 |
6*0.6 |
8*0.45 |
11*1.5 |
1.1*0.2 |
12*1 |
| 0.5*0.1 |
1.5*0.15 |
2.4*0.15 |
3.2*0.4 |
4.5*0.9 |
6*0.7 |
8*0.5 |
11*2 |
1.1*0.3 |
12*1.5 |
| 0.5*0.125 |
1.5*0.2 |
2.4*0.2 |
3.2*0.5 |
4.5*1 |
6*0.8 |
8*0.6 |
11.1*0.4 |
1.2*0.135 |
12*2.0 |
| 0.5*0.15 |
1.5*0.25 |
2.4*0.25 |
3.2*0.6 |
4.7*0.2 |
6*0.9 |
8*0.7 |
12*0.2 |
1.6*0.25 |
12.8*1.6 |
| 0.6*0.1 |
1.5*0.3 |
2.4*0.3 |
3.2*0.8 |
4.7*0.25 |
6*1.0 |
8*0.8 |
12*0.25 |
1.9*0.1 |
14*0.5 |
| 0.6*0.125 |
1.5*0.35 |
2.4*0.4 |
3.4*0.5 |
4.7*0.3 |
6*1.2 |
8*0.9 |
12*0.3 |
2*0.3 |
14*1.5 |
| 0.6*0.15 |
1.5*0.4 |
2.4*0.5 |
3.5*0.15 |
4.8*0.125 |
6*1.25 |
8*1 |
12*0.4 |
2*0.4 |
14*2.0 |
| 0.63*0.15 |
1.5*0.45 |
2.4*0.6 |
3.5*0.2 |
4.8*0.2 |
6*1.5 |
8*1.2 |
12*0.5 |
2*0.5 |
15*0.5 |
| 0.7*0.1 |
1.5*0.5 |
2.4*0.7 |
3.5*0.25 |
4.8*0.25 |
6*2 |
8*1.5 |
12*1 |
2*0.6 |
15*1.5 |
| 0.7*0.125 |
1.6*0.1 |
2.4*0.75 |
3.5*0.3 |
4.8*0.3 |
6.35*0.3 |
8*2 |
12.3*0.4 |
2.5*0.25 |
15*2 |
| 0.7*0.15 |
1.6*0.125 |
2.4*0.8 |
3.5*0.4 |
4.8*0.5 |
6.35*0.5 |
8*2.5 |
12.7*0.3 |
2.5*0.3 |
16*0.5 |
| 0.7*0.2 |
1.6*0.15 |
2.5*0.1 |
3.5*0.5 |
5*0.1 |
6.35*0.7 |
8.5*0.2 |
13*0.5 |
2.5*0.5 |
16*1.0 |
| 0.8*0.1 |
1.6*0.2 |
2.5*0.15 |
3.5*0.55 |
5*0.15 |
6.35*1.0 |
8.5*0.25 |
13*1 |
3*0.5 |
16*1.5 |
| 0.8*0.125 |
1.6*0.25 |
2.5*0.2 |
3.5*0.7 |
5*0.2 |
6.4*0.225 |
8.5*0.3 |
13*1.5 |
3*0.8 |
16*2.0 |
| 0.8*0.15 |
1.6*0.3 |
2.5*0.25 |
3.5*0.8 |
5*0.25 |
6.5*0.2 |
8.5*0.4 |
13*2 |
3*1 |
17*1.5 |
| 0.8*0.2 |
1.6*0.35 |
2.5*0.3 |
3.5*1.0 |
5*0.3 |
6.5*0.25 |
8.5*0.5 |
13.5*0.5 |
4*0.3 |
17*2.0 |
| 0.8*0.25 |
1.6*0.4 |
2.5*0.35 |
3.5*1.15 |
5*0.35 |
6.5*0.3 |
8.5*1.0 |
14*0.25 |
4*0.5 |
18*1.5 |
| 0.9*0.1 |
1.65*0.3 |
2.5*0.4 |
3.6*0.15 |
5*0.4 |
6.5*0.4 |
8.5*1.3 |
14*0.3 |
4*1 |
18*2.0 |
| 0.9*0.15 |
1.7*0.1 |
2.5*0.45 |
3.7*0.15 |
5*0.45 |
6.5*0.5 |
8.5*1.5 |
14*0.5 |
4.8*0.15 |
19*1.5 |
| 0.9*0.2 |
1.7*0.15 |
2.5*0.5 |
3.7*0.2 |
5*0.5 |
6.5*0.6 |
8.9*1.4 |
14*1 |
5*0.5 |
19*2.0 |
| 0.9*0.25 |
1.7*0.2 |
2.5*0.6 |
3.7*0.5 |
5*0.6 |
6.5*0.7 |
9*0.2 |
14.2*0.2 |
5*1 |
20*1.0 |
| 1.0*0.1 |
1.7*0.25 |
2.5*0.65 |
3.8*0.2 |
5*0.7 |
6.5*0.8 |
9*0.25 |
15*0.3 |
5.5*1.75 |
20*1.5 |
| 1.0*0.125 |
1.7*0.3 |
2.5*0.7 |
3.8*0.25 |
5*0.75 |
6.5*0.9 |
9*0.3 |
15*0.5 |
6*0.15 |
20*2.0 |
| 1.0*0.15 |
1.8*0.1 |
2.5*0.85 |
3.8*0.3 |
5*0.8 |
6.5*1 |
9*0.4 |
15*1 |
6*0.25 |
20*2.5 |
| 1.0*0.2 |
1.8*0.15 |
2.6*0.15 |
3.9*0.2 |
5*0.9 |
6.5*1.3 |
9*0.5 |
16*0.5 |
6*0.3 |
21*1.0 |
| 1.0*0.25 |
1.8*0.2 |
2.6*0.2 |
4*0.1 |
5*1.0 |
6.7*0.5 |
9*0.6 |
16*1 |
6*0.5 |
22*1.5 |
| 1.0*0.3 |
1.8*0.25 |
2.6*0.3 |
4*0.15 |
5*1.2 |
6.8*0.15 |
9*0.7 |
17*0.5 |
6*0.85 |
25*1.5 |
| 1.0*0.35 |
1.8*0.3 |
2.6*0.5 |
4*0.2 |
5*1.5 |
7*0.15 |
9*0.8 |
17*1 |
6*1 |
28.6*1.5 |
| 1.1*0.1 |
1.8*0.35 |
2.65*0.15 |
4*0.25 |
5.2*0.2 |
7*0.2 |
9*0.9 |
18*0.5 |
7*0.3 |
|
| 1.1*0.12 |
1.8*0.4 |
2.7*0.15 |
4*0.3 |
5.2*0.3 |
7*0.25 |
9*1 |
18*1.0 |
7*0.5 |
|
| 1.1*0.125 |
1.9*0.1 |
2.7*0.2 |
4*0.35 |
5.2*0.45 |
7*0.3 |
9*1.5 |
19*0.5 |
7*1.0 |
|
| 1.1*0.15 |
1.9*0.15 |
2.7*0.3 |
4*0.4 |
5.2*0.5 |
7*0.35 |
9*2 |
19*1.0 |
8*0.5 |
|
| 1.1*0.2 |
1.9*0.2 |
2.8*0.15 |
4*0.45 |
5.4*0.2 |
7*0.4 |
9.5*0.25 |
20*0.5 |
8*1 |
|
| 1.1*0.25 |
1.9*0.25 |
2.8*0.2 |
4*0.5 |
5.45*0.275 |
7*0.45 |
9.5*0.3 |
21*0.5 |
9*0.5 |
|
| 1.2*0.1 |
2*0.1 |
2.8*0.25 |
4*0.6 |
5.5*0.15 |
7*0.5 |
9.5*0.5 |
|
9*1 |
|
| 1.2*0.12 |
2*0.125 |
2.8*0.3 |
4*0.7 |
5.5*0.2 |
7*0.6 |
9.5*0.7 |
|
10*0.5 |
|
| 1.2*0.125 |
2*0.15 |
2.8*0.5 |
4*0.75 |
5.5*0.25 |
7*0.7 |
9.5*1 |
|
10*1 |
|
| 1.2*0.15 |
2*0.2 |
2.8*0.7 |
4*0.8 |
5.5*0.3 |
7*0.8 |
9.5*1.5 |
|
|
|
| 1.2*0.2 |
2*0.25 |
2.9*0.3 |
4*0.9 |
5.5*0.4 |
7*0.9 |
10*0.2 |
|
|
|
| 1.2*0.25 |
2*0.3 |
3*0.1 |
4*1.0 |
5.5*0.5 |
7*1.0 |
10*0.25 |
|
|
|
| 1.2*0.3 |
2*0.35 |
3*0.15 |
4*1.25 |
5.5*0.6 |
7*1.2 |
10*0.3 |
|
|
|
| 1.2*0.4 |
2*0.4 |
3*0.2 |
4*1.5 |
5.5*0.7 |
7*1.5 |
10*0.4 |
|
|
|
| 1.3*0.1 |
2*0.45 |
3*0.25 |
4.2*0.2 |
5.5*0.75 |
7*2 |
10*0.5 |
|
|
|
| 1.3*0.12 |
2*0.5 |
3*0.3 |
4.2*0.25 |
5.5*0.8 |
7.5*0.2 |
10*0.6 |
|
|
|
| 1.3*0.125 |
2*0.6 |
3*0.35 |
4.2*0.3 |
5.5*1 |
7.5*0.25 |
10*0.7 |
|
|
|
| 1.3*0.135 |
2*0.7 |
3*0.4 |
4.2*0.4 |
5.6*0.85 |
7.5*0.3 |
10*0.8 |
|
|
|
| 1.3*0.15 |
2.1*0.15 |
3*0.5 |
4.2*0.5 |
5.7*0.2 |
7.5*0.4 |
10*0.9 |
|
|
|
| 1.3*0.175 |
2.1*0.2 |
3*0.6 |
4.3*0.9 |
5.7*0.3 |
7.5*0.5 |
10*1.0 |
|
|
|
| 1.3*0.2 |
2.1*0.25 |
3*0.7 |
4.4*0.45 |
5.8*0.15 |
7.5*0.6 |
10*1.5 |
|
|
|
| 1.3*0.25 |
2.1*0.65 |
3*0.75 |
4.4*0.5 |
5.8*0.2 |
7.5*0.7 |
10*2 |
|
|
|
| 1.3*0.3 |
2.2*0.15 |
3*0.8 |
4.5*0.15 |
5.8*0.5 |
7.5*0.8 |
10*2.5 |
|
|
|
| 1.4*0.1 |
2.2*0.2 |
3*0.9 |
4.5*0.2 |
5.8*0.7 |
7.5*0.9 |
10.3*0.2 |
|
|
|
| 1.4*0.15 |
2.2*0.25 |
3*1.0 |
4.5*0.25 |
6*0.15 |
7.5*1.0 |
10.8*0.2 |
|
|
soft bright |
| 1.4*0.2 |
2.2*0.3 |
3*1.1 |
4.5*0.3 |
6*0.2 |
7.8*0.5 |
11*0.2 |
|
|
1.5*0.15 |
| 1.4*0.25 |
2.2*0.5 |
3*1.2 |
4.5*0.4 |
6*0.25 |
8*0.15 |
11*0.25 |
|
|
2*0.5 |
| 1.4*0.3 |
2.3*0.125 |
3.2*0.15 |
4.5*0.5 |
6*0.3 |
8*0.2 |
11*0.3 |
|
|
2.5*0.5 |
| 1.4*0.35 |
2.3*0.15 |
3.2*0.2 |
4.5*0.6 |
6*0.4 |
8*0.25 |
11*0.4 |
|
|
5*0.5 |
Manufacturing Facilities & Standards
Products Display
Stainless Steel Grades & Materials
American Standard Material:
TP304, TP304L, TP304H, TP321, TP321H, TP316L, TP316SS, TP316Ti, TP347, TP347H, TP317L, TP309S, TP310S, 904L
Russian Standard Material:
08X18H10, 03X18H11, 10X17H13M2T, 03X17H13M2, 12X18H10T, 08X18H10T, 08X18H12B
German Standard Material:
1.4301, 1.4306, 1.4541, 1.4404, 1.4571, 1.4550
Japanese Standard Material:
SUS304, SUS304L, SUS321, SUS316L, SUS316Ti, SUS347, SUS800, SUS840
Double-Grade Material:
304/304L, 316/316L, 321/321H, 347/347H
Super Duplex Steel:
2205, 2304, S31803, S32750
Nickel Alloys & Others:
Inconel 600, Inconel 601, Inconel 625, Inconel 725, Incoloy 800, Incoloy 800H, Incoloy 800HT, Incoloy 825, Incoloy 901, Incoloy 925, Incoloy 926, etc.
SS316L Capillary Tubing Specifications and Pressure Rating
Stainless Steel Capillary Tubing Chemical Composition
| Grades |
UNS |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Ti |
Nb |
N |
| TP304 |
S30400 |
0.08 |
2 |
0.045 |
0.03 |
1 |
18.0-20.0 |
8.0-11.0 |
|
|
|
|
| TP304L |
S30403 |
0.035 |
2 |
0.045 |
0.03 |
1 |
18.0-20.0 |
8.0-13.0 |
|
|
|
|
| TP316 |
S31600 |
0.08 |
2 |
0.045 |
0.03 |
1 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
|
|
|
| TP316L |
S31603 |
0.035 |
2 |
0.045 |
0.03 |
1 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
|
|
|
Stainless Steel Capillary Tubing Mechanical Properties
| Material |
Heat Treatment |
Temp Min. °F(°C) |
Tensile Strength Ksi (MPa), Min. |
Yield Strength Ksi (MPa), Min. |
Elongation %, Min |
| TP304 |
Solution |
1900 (1040) |
75 (515) |
30 (205) |
35 |
| TP304L |
Solution |
1900 (1040) |
70 (485) |
25 (170) |
35 |
| TP316 |
Solution |
1900 (1040) |
75 (515) |
30 (205) |
35 |
| TP316L |
Solution |
1900 (1040) |
70 (485) |
25 (170) |
35 |
Stainless Steel Capillary Tubing Equivalent Grades
| Grade |
UNS No |
DIN/Werkstoff |
| Stainless Steel Capillary Tube 304 |
S30400 |
1.4301 |
| Stainless Steel Capillary Tube 304L |
S30403 |
1.4306 |
| Stainless Steel Capillary Tube 316 |
S31600 |
1.4436 |
| Stainless Steel Capillary Tube 316L |
S31603 |
1.4404 |
Frequently Asked Questions (FAQ)
What steel grades are available for your stainless steel capillary tubes?
We produce and supply capillary tubes in a wide variety of grades, including standard options like 201, 304, 304L, 316, and 316L. We also manufacture in advanced materials like 904L, 310s, duplex steels (2205, 2507), and nickel alloys such as Inconel 625 and Incoloy 825.
What sizes and thicknesses of capillary tubing do you offer?
Our capillary tubes are available in outer diameters (OD) ranging from 0.25mm to 28mm, with wall thicknesses spanning from 0.08mm to 1.5mm. Custom size combinations can be accommodated according to project specifications.
What are the primary applications of stainless steel capillary tubes?
They are widely used in dynamic instrument signal lines, automatic instrument wire protection, precision optical ruler lines, industrial sensors, electronic equipment wire casing, circuit safety systems, thermal instrument capillary protection, and inner supports for hollow core high-voltage cables.
In what forms and lengths can the capillary tubing be delivered?
We supply tubes in either straight or coiled styles. Coiled tubes are available in continuous lengths ranging from 600 to 3500 meters per coil without any welded joints, ensuring optimal pressure integrity and signal flow.
What quality checks and testing do the capillary tubes undergo?
To guarantee the highest performance standards, all capillary tubing undergoes verification for chemical composition and physical properties, along with Eddy Current Testing and Hydrostatic Testing.
Sihe Steel
