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Sihe Steel
Sihe Steel
| 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 |
The physical properties and chemical composition of stainless steel polishing pipes:
| Grade | Carbon, max | Manganese, max | Phosphorus, max | Sulfur, max | Silicon, max | Nickel | Chromium | Molybdenum | Titanium | Columbium + Tantalum |
|---|---|---|---|---|---|---|---|---|---|---|
| Austenitic Grades | ||||||||||
| 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 | ... |
| U.S.A. (AISI) | GERMANY (DIN 17006) | GERMANY (W.N. 17007) | FRANCE (AFNOR) | JAPAN (JIS) | ITALY (UNI) | SWEDEN (SIS) | U.K. (BSI) | E.U. (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 |
| 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 |
| 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 |
| 303 Se | - | - | Z 10 CNF 18-09 | SUS 303 Se | X 10 CrNiS 1809 | - | 303S41 | - |
| 304 | X 5 CrNi 18 10 | 1.4301 | Z 6 CN 18-09 | SUS 304 | X 5 CrNi 1810 | 23 32 | 304S15 | X 6 CrNi 18 10 |
| 304 N | - | - | - | SUS 304N1 | X 5 CrNiN 1810 | - | - | - |
| 304 H | - | - | - | SUS F 304H | X 8 CrNi 1910 | - | - | - |
| 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 |
| 305 | - | - | Z 8 CN 18-12 | SUS 305 | X 8 CrNi 1812 | 23 33 | 305S19 | 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 | - |
| 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 |
| 314 | X 15 CrNiSi 25 20 | 1.4841 | Z 12 CNS 25-20 | - | X 16 CrNiSi 2520 | - | - | X 15 CrNiSi 25 20 |
| 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 |
| 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 |
| 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 |
| 330 | X 12 NiCrSi 36 16 | 1.4864 | Z 12NCS 35-16 | SUH 330 | - | - | - | - |
| 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 |
| 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 |
| 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 | 1.4000 | Z 12 C 13 | SUS 403 | X 12 Cr 13 | 23 02 | 403S17 | X 10 Cr 13 |
| 405 | X 6 CrAl 13 | 1.4002 | Z 6 CA 13 | SUS 405 | X 6 CrAl 13 | - | 405S17 | 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 | 1.4000 | Z 10 C 13 | SUS 410 | X 12 Cr 13 | 23 02 | 410S21 | X 12 Cr 13 |
The quality of our products for the control line in the oil and gas sector is strictly assured throughout the controlled manufacturing process and verified through detailed testing. Standard verification processes include:
What sizes and shapes are available for stainless steel polishing tubes?
We supply round pipes with an outer diameter (OD) of 8mm to 219mm, square pipes ranging from 10x10mm to 150x150mm, and rectangular pipes ranging from 10x20mm to 120x180mm. The thickness options range from 0.2mm to 4.0mm.
Which standards and material grades do you support?
Our stainless steel polishing tubes and coils are manufactured to ASTM A554, JIS, and DIN standards. We support multiple material grades including Austenitic grades (like 304, 304L, 316, 316L, 309S, 310S, etc.) and Ferritic grades (like 409, 430).
What surface finishes are available for these steel pipes?
We offer various surface finishes matching different application requirements, including 180G, 320G, 400G, 500G, 600G, Satin, hairline, 2B, BA, mirror, and 8K finishes.
How is the quality of stainless steel coiled tubing guaranteed?
All coiled tubing products undergo strict quality checks including non-destructive testing, hydrostatic tests, surface finish checks, dimensional accuracy measurements, flare and coning tests, alongside mechanical and chemical property analyses.
What are the main applications of stainless steel capillary tubes?
Stainless steel capillary tubes are widely used in medical devices, industrial temperature sensors, instrumentation, micro-antennas, electronic devices, precision dispensing systems, stylus pens, and thermal/oil piping networks.
