Stainless steel pipe is one of the more standardized materials in the building and engineering industries. Stainless Steel Seamless Pipes is a hollow steel bar, a large number of pipes used for conveying fluids, such as oil, gas, water, gas, steam, heat exchanger, mechanical machine.
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📋 Specifications
Standard:
ASTM A-312, ASTM A-269, ASTM A-632, ASTM A-213, DIN 17458, DIN17456, JIS G3463, JIS G3459, JIS G3448
Material Grade:
201 / 202 / 304 / 316
Outer Diameter:
0.1mm - 8mm
Thickness:
0.05mm - 2.1mm
Length:
2440mm, 3050mm, 5800mm, 6000mm, 6100mm or as customer request
Tolerance:
a) Outer Diameter: +/- 0.2mm
b) Thickness: +/- 10% OR as customer request
c) Length: +/- 10mm
Surface:
Satin / Hairline: 180#, 320#
Polish:
400#, 600#, 800# or Mirror surface
Application:
Processed into railings, handrails, doors and Windows
Packing:
Plastic bag / woven packing (please send details packing if you have other requirements)
⚗️ Chemical Composition for 316 Stainless Steel Precision Pipe
| 316 Stainless Steel Capillary Tube |
| Grade |
UNS |
C |
Cr |
Ni |
Mo |
Others |
| max. |
| TP 316L |
S31600 / S31603 |
0.03 |
17.5 |
13 |
2.1 |
0.1 |
| Mechanical properties |
|
| Grade |
Yield strength, psi (MPa) |
Tensile strength, psi (MPa) |
Elongation % |
| TP 316L |
32,000 (220) |
75,000 (515) |
35 |
| Corrosion properties |
| Grade |
UNS |
PRE1) |
CPT2) F (oC) |
Max H2S3) psi |
CO24) |
| TP 316L |
S31600 / S31603 |
24 |
95 (35) |
No limit |
+ |
💡 General Application
Hydraulic pneumatic components
Textile chemical fiber machinery
Medical and chemical
Food hygiene
Instrumentation
Boilers & pressure vessels
Mechanical and electronic industries
📏 Tube Size Reference Table
| Square Steel Tube (mm) |
Rectangular Steel Tube (mm) |
Round Steel Tube (mm) |
| 10×10×0.6~3.0 | 10×20×0.6~3.0 | 6x0.6~1.0 |
| 15×15×0.6~3.0 | 20×30×0.6~3.0 | 12x0.6~1.5 |
| 20×20×0.6~3.0 | 20×40×0.6~3.0 | 13x0.6~1.5 |
| 25×25×0.6~3.0 | 25×50×0.6~3.5 | 16x0.6~2.0 |
| 30×30×0.6~3.5 | 30×50×0.6~3.5 | 19x0.6~3.0 |
| 40×40×0.6~3.5 | 40×60×0.6~3.5 | 20x0.6~3.0 |
| 50×50×0.6~3.5 | 40×80×0.6~3.5 | 22x0.6~3.0 |
| 60×60×0.6~3.5 | 60×80×1.0~6.0 | 25x0.6~3.0 |
| 70×70×0.6~3.5 | 50×100×1.0~6.0 | 27x0.6~3.0 |
| 75×75×0.6~3.5 | 60×120×1.0~6.0 | 32x0.6~3.0 |
| 80×80×1.0~6.0 | 80×120×2.0~8.0 | 40x0.6~3.5 |
| 100×100×2.0~8.0 | 80×160×2.0~8.0 | 38x0.6~3.0 |
| 120×120×2.0~8.0 | 100×150×2.0~8.0 | 48x0.6~3.5 |
| 150×150×2.0~8.0 | 100×200×2.0~8.0 | 60x0.6~3.5 |
| 200×200×4.0~16.0 | 150×250×4.0~12.0 | 76x0.6~3.5 |
| 250×250×4.0~16.0 | 200×300×4.0~16.0 | 89x1.0~6.0 |
| 300×300×4.0~16.0 | 300×400×4.0~16.0 | 104x1.0~6.0 |
| 400×400×4.0~16.0 | 300×500×4.0~16.0 | 114x1.0~6.0 |
📈 Physical Properties of Stainless Steel Polishing Pipe
| Grade |
Composition, % |
| Carbon, max |
Manganese, max |
Phosphorus, max |
Sulfur, max |
Silicon, max |
Nickel |
Chromium |
Molybdenum |
Titanium |
Columbium + Tantalum |
| Austenitic |
| 301 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 6.0–8.0 | 16.0–18.0 | ... | ... | ... |
| 302 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–10.0 | 17.0–19.0 | ... | ... | ... |
| 304 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–11.0 | 18.0–20.0 | ... | ... | ... |
| 304L | 0.035A | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–13.0 | 18.0–20.0 | ... | ... | ... |
| 305 | 0.12 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–13.0 | 17.0–19.0 | ... | ... | ... |
| 309S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0–15.0 | 22.0–24.0 | ... | ... | . . . |
| 309S-Cb | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0–15.0 | 22.0–24.0 | ... | ... | B |
| 310S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 19.0–22.0 | 24.0–26.0 | ... | ... | ... |
| 316 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–14.0 | 16.0–18.0 | 2.0–3.0 | ... | ... |
| 316L | 0.035A | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–15.0 | 16.0–18.0 | 2.0–3.0 | ... | ... |
| 317 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 11.0–14.0 | 18.0–20.0 | 3.0–4.0 | ... | ... |
| 321 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0–13.0 | 17.0–20.0 | ... | C | ... |
| 330 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 33.0–36.0 | 14.0–16.0 | ... | ... | ... |
| 347 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0–13.0 | 17.0–20.0 | ... | ... | B |
| 429 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 14.0–16.0 | ... | ... | ... |
| 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 16.0–18.0 | ... | ... | ... |
| 430-Ti | 0.10 | 1.00 | 0.040 | 0.030 | 1.00 | 0.075 max | 16.0–19.5 | ... | 5 × C min, 0.75 max | ... |
🌐 Stainless Steel Coiled Tubing / Coiled Tubes Material Grade Cross Reference
| U.S.A. |
GERMANY |
GERMANY |
FRANCE |
JAPAN |
ITALY |
SWEDEN |
U.K. |
E.U. |
SPAIN |
RUSSIA |
| AISI |
DIN 17006 |
W.N. 17007 |
AFNOR |
JIS |
UNI |
SIS |
BSI |
EURONORM |
|
|
| 201 | | | | SUS 201 | | | | | | |
| 301 | X 12 CrNi 17 7 | 1.4310 | Z 12 CN 17-07 | SUS 301 | X 12 CrNi 1707 | 23 31 | 301S21 | X 12 CrNi 17 7 | X 12 CrNi 17-07 | |
| 302 | X 5 CrNi 18 7 | 1.4319 | Z 10 CN 18-09 | SUS 302 | X 10 CrNi 1809 | 23 31 | 302S25 | X 10 CrNi 18 9 | X 10 CrNi 18-09 | 12KH18N9 |
| 303 | X 10 CrNiS 18 9 | 1.4305 | Z 10 CNF 18-09 | SUS 303 | X 10 CrNiS 1809 | 23 46 | 303S21 | X 10 CrNiS 18 9 | X 10 CrNiS 18-09 | |
| 303 Se | | | Z 10 CNF 18-09 | SUS 303 Se | X 10 CrNiS 1809 | | 303S41 | | X 10 CrNiS 18-09 | 12KH18N10E |
| 304 | X 5 CrNi 18 10 / 18 12 | 1.4301 / 1.4303 | Z 6 CN 18-09 | SUS 304 | X 5 CrNi 1810 | 23 32 | 304S15 / 16 | X 6 CrNi 18 10 | X 6 CrNi 19-10 | 08KH18N10 / 06KH18N11 |
| 304 N | | | | SUS 304N1 | X 5 CrNiN 1810 | | | | | |
| 304 H | | | | SUS F 304H | X 8 CrNi 1910 | | | | X 6 CrNi 19-10 | |
| 304 L | X 2 CrNi 18 11 | 1.4306 | Z 2 CN 18-10 | SUS 304L | X 2 CrNi 1911 | 23 52 | 304S11 | X 3 CrNi 18 10 | X 2 CrNi 19-10 | 03KH18N11 |
| 305 | | | Z 8 CN 18-12 | SUS 305 | X 8 CrNi 1812 | 23 33 | 305S19 | X 8 CrNi 18 12 | X 8 CrNi 18-12 | |
| 309 | X 15 CrNiS 20 12 | 1.4828 | Z 15 CN 24-13 | SUH 309 | X 16 CrNi 2314 | | 309S24 | X 15 CrNi 23 13 | | |
| 309 S | | | | SUS 309S | X 6 CrNi 2314 | | | X 6 CrNi 22 13 | | |
| 310 | X 12 CrNi 25 21 | 1.4845 | | SUH 310 | X 22 CrNi 2520 | | 310S24 | | | 20KH23N18 |
| 310 S | X 12 CrNi 25 20 | 1.4842 | Z 12 CN 25-20 | SUS 310S | X 5 CrNi 2520 | 23 61 | | X 6 CrNi 25 20 | | 10KH23N18 |
| 314 | X 15 CrNiSi 25 20 | 1.4841 | Z 12 CNS 25-20 | | X 16 CrNiSi 2520 | | | X 15 CrNiSi 25 20 | | 20KH25N20S2 |
| 316 | X 5 CrNiMo 17 12 2 | 1.4401 | Z 6 CND 17-11 | SUS 316 | X 5 CrNiMo 1712 | 23 47 | 316S31 | X 6 CrNiMo 17 12 2 | X 6 CrNiMo 17-12-03 | |
| 316 L | X 2 CrNiMo 17 13 2 | 1.4404 | Z 2 CND 17-12 | SUS 316L | X 2 CrNiMo 1712 | 23 48 | 316S11 | X 3 CrNiMo 17 12 2 | X 2 CrNiMo 17-12-03 | 03KH17N14M2 |
| 317 | | | | SUS 317 | X 5 CrNiMo 1815 | 23 66 | 317S16 | | | |
| 317 L | X 2 CrNiMo 18 16 4 | 1.4438 | Z 2 CND 19-15 | SUS 317L | X 2 CrNiMo 1815 | 23 67 | 317S12 | X 3 CrNiMo 18 16 4 | | |
| 321 | X 6 CrNiTi 18 10 | 1.4541 | Z 6 CNT 18-10 | SUS 321 | X 6 CrNiTi 1811 | 23 37 | 321S31 | X 6 CrNiTi 18 10 | X 6 CrNiTi 18-11 | 08KH18N10T |
| 347 | X 6 CrNiNb 18 10 | 1.4550 | Z 6 CNNb 18-10 | SUS 347 | X 6 CrNiNb 1811 | 23 38 | 347S31 | X 6 CrNiNb 18 10 | X 6 CrNiNb 18-11 | 08KH18N12B |
| 904L | | 1.4939 | Z 12 CNDV 12-02 | | | | | | | |
| UNS31803 | X 2 CrNiMoN 22 5 | 1.4462 | | | | | | | | |
| UNS32760 | X 3 CrNiMoN 25 7 | 1.4501 | Z 3 CND 25-06Az | | | | | | | |
| 403 | X 6 Cr 13 / X 10 / X 15 | 1.4000 / 06 / 24 | Z 12 C 13 | SUS 403 | X 12 Cr 13 | 23 02 | 403S17 | X 10 Cr 13 / 12 | X 6 Cr 13 | 12Kh13 |
| 405 | X 6 CrAl 13 | 1.4002 | Z 6 CA 13 | SUS 405 | X 6 CrAl 13 | | 405S17 | X 6 CrAl 13 | X 6 CrAl 13 | |
| 409 | X 6 CrTi 12 | 1.4512 | Z 6 CT 12 | SUH 409 | X 6 CrTi 12 | | 409S19 | X 5 CrTi 12 | | |
| 410 | X 6 Cr 13 / X 10 / X 15 | 1.4000 / 06 / 24 | Z 10 C 13 / 12 | SUS 410 | X 12 Cr 13 | 23 02 | 410S21 | X 12 Cr 13 | X 12 Cr 13 | 12Kh13 |
🏭 Factory
⭐ Quality Advantage
The quality of our products for the control line in oil and gas sector is assured not just during the controlled manufacturing process but also by way of finished product testing. Typical tests include:
1 Non-destructive tests
2 Hydrostatic tests
3 Surface finish controls
4 Dimensional accuracy measurements
5 Flare and coning tests
6 Mechanical and chemical property testing
⚙️ Application Capillary Tube
Medical device industry
Temperature-guided industrial temperature control, sensors used pipe, tube thermometer
Pens care industry core tube
Micro-tube antenna, various types of small precision stainless steel antenna
Various electronic small-diameter stainless steel capillary
Jewelry needle punch
Watches & picture frames
Car antenna tube, bar antennas using tubes, antenna tube
Laser engraving equipment to use stainless steel tube
Fishing gear, accessories
Diet with stainless steel capillary
All types of mobile phone stylus / computer stylus
Heating pipe industry, oil industry
Printers, silent box needle
Double-melt stainless steel tube used in window-coupled
Various industrial small diameter precision stainless steel tubes
Precision dispensing with stainless steel needles
Microphone, headphones and microphone stainless steel tube
❓ Frequently Asked Questions (FAQ)
Q: What standards do your stainless steel precision pipes conform to?
A: Our stainless steel precision pipes comply with several international standards, including ASTM A-312, ASTM A-269, ASTM A-632, ASTM A-213, DIN 17458, DIN 17456, JIS G3463, JIS G3459, and JIS G3448.
Q: What dimensions and tolerances can be achieved for precision tubes?
A: We offer outer diameters from 0.1mm up to 8mm and wall thicknesses from 0.05mm to 2.1mm. The standard OD tolerance is +/- 0.2mm, thickness tolerance is +/- 10%, and length tolerance is +/- 10mm. Custom requirements are also supported.
Q: What are the primary applications of stainless steel capillary tubes?
A: Capillary tubes are widely used in medical devices, industrial temperature sensors, instrumentation, micro-tube antennas, stylus devices, precision dispensing equipment, electronics, and various heat exchanger systems.
Q: How is the quality of the control line in the oil and gas sector guaranteed?
A: Quality is assured through rigorous manufacturing process monitoring and final product testing, including non-destructive testing, hydrostatic testing, surface finish controls, dimensional accuracy measurements, and flare/coning tests.
Q: What surface finishes are available for the polished stainless steel pipes?
A: We provide Satin or Hairline finishes (180#, 320#) as well as polished finishes (400#, 600#, 800#) up to mirror-like surfaces.
Q: What materials are typical for these precision seamless tubes?
A: The common material grades used include 201, 202, 304, and 316/316L, which provide exceptional structural strength and corrosion resistance.
Sihe Steel
