Sihe Steel
Stainless steel capillary and stainless steel small tubes are widely used in medical treatment, fiber-optic, pen making, electronic welding products, light cable joints, food, vintage, dairy, drinks, pharmacy, and biochemistry. Different lengths can be provided according to specific requests.
Key Feature: Capillary tubes with a maximum bore of 0.0158 in. are available in a wide range of stainless steels. These capillary tubes are characterized by tight tolerances, and the inside surface of the tubes is free from oil, grease, and other particles. This ensures an optimized and even flow of liquids and gases from the sensor to the measuring instrument.
Stainless steel coiled tubing is available in a range of different product forms depending on customer requirements. We manufacture welded and seamless tube products. The standard grades include 304, 304L, 316L (UNS S31603), Duplex 2205 (UNS S32205 & S31803), Super Duplex 2507 (UNS S32750), Incoloy 825 (UNS N08825), Inconel 625 (UNS N06625). Other grades of stainless steel in duplex, superduplex, and nickel alloy are available on request.
Diameter from 3mm (0.118’’) to 25.4mm (1.00’’) OD. Wall thickness from 0.5mm (0.020’’) to 3mm (0.118’’). Tubing can be supplied in the annealed or cold worked stainless steel control line pipe condition.
| Thickness | 0.1-2.0mm |
| Diameter | 0.3-20mm (tolerance: ±0.01mm) |
| Stainless Grade | 201, 202, 304, 304L, 316L, 317L, 321, 310s, 254mso, 904L, 2205, 625, etc. |
| Surface Finish | Inside and outside are both bright annealing, cleaning, and seamless, no leaks. |
| Standard | ASTM A269-2002, JIS G4305, GB/T 12770-2002, GB/T12771-2002 |
| Length | 200-1500m per coil, or as customer required |
| Stock size | 6*1mm, 8*0.5mm, 8*0.6mm, 8*0.8mm, 8*0.9mm, 8*1mm, 9.5*1mm, 10*1mm, etc. |
| Certificate | ISO & BV |
| Packing way | Woven bags, plastic bags, etc. |
| Application range | Widely used in the food industry, beverage equipment, beer machines, heat exchangers, milk/water supply systems, medical equipment, solar energy, aviation, aerospace, communications, oil, and other industries. |
| Note | OEM / ODM / Buyer Label accepted. |
| ITEM | Grade | Size (MM) | Pressure (Mpa) | Length (M) |
|---|---|---|---|---|
| 1 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/8″×0.025″ | 3200 | 500-35000 |
| 2 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/8″×0.035″ | 3200 | 500-35000 |
| 3 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/4″×0.035″ | 2000 | 500-35000 |
| 4 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/4″×0.049″ | 2000 | 500-35000 |
| 5 | 316L, 304L, 304 alloy 625 825 2205 2507 | 3/8″×0.035″ | 1500 | 500-35000 |
| 6 | 316L, 304L, 304 alloy 625 825 2205 2507 | 3/8″×0.049″ | 1500 | 500-35000 |
| 7 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/2″×0.049″ | 1000 | 500-35000 |
| 8 | 316L, 304L, 304 alloy 625 825 2205 2507 | 1/2″×0.065″ | 1000 | 500-35000 |
| 9 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ3mm×0.7mm | 3200 | 500-35000 |
| 10 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ3mm×0.9mm | 3200 | 500-35000 |
| 11 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ4mm×0.9mm | 3000 | 500-35000 |
| 12 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ4mm×1.1mm | 3000 | 500-35000 |
| 13 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ6mm×0.9mm | 2000 | 500-35000 |
| 14 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ6mm×1.1mm | 2000 | 500-35000 |
| 15 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ8mm×1mm | 1800 | 500-35000 |
| 16 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ8mm×1.2mm | 1800 | 500-35000 |
| 17 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×1mm | 1500 | 500-35000 |
| 18 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×1.2mm | 1500 | 500-35000 |
| 19 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ10mm×2mm | 500 | 500-35000 |
| 20 | 316L, 304L, 304 alloy 625 825 2205 2507 | φ12mm×1.5mm | 500 | 500-35000 |
Selection of the appropriate material for any given control or chemical injection line is subject to the prevailing operational and site conditions. In order to assist in the selection, the following tables provide internal pressure ratings and the adjustment factors for a range of common grades and sizes of seamless and laser welded stainless tubing.
Please refer to grade and product form adjustment factors below.
| Outside diameter, in. | Wall thickness, in. | Working pressure, psi (MPa) | Burst pressure, psi (MPa) | Collapse pressure, psi (MPa) |
|---|---|---|---|---|
| 1/4 | 0.035 | 6,600 (46) | 22,470 (155) | 6,600 (46) |
| 1/4 | 0.049 | 9,260 (64) | 27,400 (189) | 8,710 (60) |
| 1/4 | 0.065 | 12,280 (85) | 34,640 (239) | 10,750 (74) |
| 3/8 | 0.035 | 4,410 (30) | 19,160 (132) | 4,610 (32) |
| 3/8 | 0.049 | 6,170 (43) | 21,750 (150) | 6,220 (43) |
| 3/8 | 0.065 | 8,190 (56) | 25,260 (174) | 7,900 (54) |
| 3/8 | 0.083 | 10,450 (72) | 30,050 (207) | 9,570 (66) |
| 1/2 | 0.049 | 4,630 (32) | 19,460 (134) | 4,820 (33) |
| 1/2 | 0.065 | 6,140 (42) | 21,700 (150) | 6,200 (43) |
| 1/2 | 0.083 | 7,840 (54) | 24,600 (170) | 7,620 (53) |
| 5/8 | 0.049 | 3,700 (26) | 18,230 (126) | 3,930 (27) |
| 5/8 | 0.065 | 4,900 (34) | 19,860 (137) | 5,090 (35) |
| 5/8 | 0.083 | 6,270 (43) | 26,910 (151) | 6,310 (44) |
| 3/4 | 0.049 | 3,080 (21) | 17,470 (120) | 3,320 (23) |
| 3/4 | 0.065 | 4,090 (28) | 18,740 (129) | 4,310 (30) |
| 3/4 | 0.083 | 5,220 (36) | 20,310 (140) | 5,380 (37) |
1) Estimates only. Actual pressures should be calculated considering all stress factors in the system.
2) Based on calculations from API 5C3, using a wall tolerance of +/-10%
3) Based on ultimate strength burst calculations from API 5C3
4) Based on yield strength collapse calculations from API 5C3
Pw = reference working pressure rating for TP 316L at 100°F (38°C). To determine working pressure for grade/temperature combination, multiply Pw by adjustment factor.
| Grade | 100°F (38°C) | 200°F (93°C) | 300°F (149°C) | 400°F (204°C) |
|---|---|---|---|---|
| TP 316L, seamless | 1 | 0.87 | 0.7 | 0.63 |
| TP 316L, welded | 0.85 | 0.74 | 0.6 | 0.54 |
| Alloy 825, seamless | 1.33 | 1.17 | 1.1 | 1.03 |
| Alloy 825, welded | 1.13 | 1.99 | 1.94 | 0.88 |
1) Adjustment factors based on allowable stress in ASME.
Pb = reference burst pressure for TP 316L at 100°F. To determine burst pressure for grade/temperature combination, multiply Pb by adjustment factor.
| Grade | 100°F (38°C) | 200°F (93°C) | 300°F (149°C) | 400°F (204°C) |
|---|---|---|---|---|
| TP 316L, seamless | 1 | 0.93 | 0.87 | 0.8 |
| TP 316L, welded | 0.85 | 0.79 | 0.74 | 0.68 |
| Alloy 825, seamless | 1.13 | 1.07 | 1 | 0.87 |
| Alloy 825, welded | 0.96 | 0.91 | 0.85 | 0.74 |
1) Adjustment factors based on ultimate strength in ASME.
| 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 / X 5 CrNi 18 12 | 1.4301 / 1.4303 | Z 6 CN 18-09 | SUS 304 | X 5 CrNi 1810 | 23 32 | 304S15 / 304S16 | 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 |
| - | X 2 CrNiN 18 10 | 1.4311 | Z 2 CN 18-10-Az | SUS 304LN | X 2 CrNiN 1811 | 23 71 | - | - |
| 305 | - | - | Z 8 CN 18-12 | SUS 305 | X 8 CrNi 1812 | 23 33 | 305S19 | X 8 CrNi 18 12 |
| - | - | - | Z 6 CNU 18-10 | SUS XM7 | - | - | - | X 6 CrNiCu 18 10 4 Kd |
| 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 |
| 316L | 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 |
| 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 |
| 904L | - | 1.4939 | Z 12 CNDV 12-02 | - | - | - | - | - |
The quality of our products for the control line in the 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) Medical device industry | 10) Fishing gear, accessories, Yugan out with possession of |
| 2) Temperature-guided industrial temperature control, sensors used pipe, tube thermometer | 11) Diet with stainless steel capillary |
| 3) Pens care industry core tube | 12) All types of mobile phone stylus and computer stylus |
| 4) Micro-tube antenna, various types of small precision stainless steel antenna | 13) Heating pipe industry, oil industry |
| 5) With a variety of electronic small-diameter stainless steel capillary | 14) Printers, silent box needle |
| 6) Jewelry needle punch | 15) Pull a double-melt stainless steel tube used in window-coupled |
| 7) Watches, picture | 16) A variety of industrial small diameter precision stainless steel tubes |
| 8) Car antenna tube, bar antennas using tubes, antenna tube | 17) Precision dispensing with stainless steel needles |
| 9) Laser engraving equipment to use stainless steel tube | 18) Microphone, headphones and microphone to use stainless steel tube, etc. |