China AISI Incoloy 825 stainless steel capillary tubing Manufacturer, Supplier

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China AISI Incoloy 825 stainless steel capillary tubing Manufacturer, Supplier

1.Production standards: ASTM A269/A249 2.Stainless steel material :304 304L 316L(UNS S31603) Duplex 2205 (UNS S32205 & S31803) Super Duplex 2507 (UNS S32750) Incoloy 825 (UNS N08825) Inconel 625 (UNS N06625) 3. Size range: diameter 3MM(0.118”-25.4(1.0”)MM 4. Wall thicknesses: 0.5mm (0.020’’) to 3mm (0.118’’) 5.General delivery pipe status: half hard / soft bright annealing 6.The tolerance range: diameter: + 0.1mm, wall thickness: + 10%, length: -0/+6mm 7.Coil lengthsup to: 500MM-13500MM (45000feet)(can be adjusted according to customer requirements)

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Product Description

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Stainless steel capillary and stainless steel small tubes are widely used in medical treatment, fiber-optics, pen making, electronic welding products, light cable joints, food, vintage, dairy, drinks, pharmacy, and biochemistry. Different lengths can be provided according to specific requests.

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 kept free from oil, grease, and other particles. This ensures, for example, 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. Welded and seamless tube products are manufactured to meet these demands. The standard grades include 304, 304L, 316L (UNS S31603), Duplex 2205 (UNS S32205 & S31803), Super Duplex 2507 (UNS S32750), Incoloy 825 (UNS N08825), and Inconel 625 (UNS N06625). Other grades of stainless steel in duplex, superduplex, and nickel alloys are available on request.

The available dimensions feature diameters from 3mm (0.118’’) to 25.4mm (1.00’’) OD. Wall thickness ranges 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.

Specification

Parameter	Details
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	61mm, 80.5mm, 80.6mm, 80.8mm, 80.9mm, 81mm, 9.51mm, 101mm, etc.
Certificate	ISO & BV
Packing way	Woven bags, plastic bags etc.
Application range	Widely used in food industry, beverage equipment, beer machine, heat exchanger, milk/water supply system, medical equipment, solar energy, aviation, aerospace, communications, oil, and other industries.
Note	OEM / ODM / Buyer Label accepted.

Size of Stainless Steel Coil Tube

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

Pressure Tables

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.

Maximum pressure (P) for TP 316L at 100°F (38°C)¹
Please refer to grade and product form adjustment factors below.

Outside Diameter (in.)	Wall Thickness (in.)	Working Pressure psi (MPa)²	Burst Pressure psi (MPa)³	Collapse Pressure psi (MPa)⁴
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

Adjustment Factors for Working Pressure Limits¹

Pw = reference working pressure rating for TP 316L at 100°F (38°C). To determine working pressure for grade/temperature combinations, multiply Pw by the 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.

Adjustment Factors for Burst Pressure Limits¹

Pb = reference burst pressure for TP 316L at 100°F. To determine burst pressure for grade/temperature combinations, multiply Pb by the 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.

Stainless Steel Coiled Tubing / Coiled Tubes Material Grade Cross Reference

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)	RUSSIA
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	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	-
303 Se	-	-	Z 10 CNF 18-09	SUS 303 Se	X 10 CrNiS 1809	-	303S41	-	12KH18N10E
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	08KH18N10 06KH18N11
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	03KH18N11
-	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	-	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	-
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	03KH17N14M2
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	-	-	-	-	-	-

Production Facility

Quality Advantage

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 rigorous finished product testing. Typical tests include:

Non-destructive tests
Hydrostatic tests
Surface finish controls
Dimensional accuracy measurements
Flare and coning tests
Mechanical and chemical property testing

Capillary Tube Applications

Medical device industry
Temperature-guided industrial temperature control, sensors, and thermometer tubes
Pen care industry core tubes
Micro-tube antennas and precision stainless steel antenna components
Small-diameter stainless steel capillary tubes for electronics
Jewelry needle punches
Watch and picture frame applications
Car antenna tubes, bar antennas, and associated components
Laser engraving equipment tubing
Fishing gear and related accessories
Dietary and food-grade stainless steel capillary tubes
Mobile phone and computer styluses
Heating pipe and oil industry systems
Printers and silent box needles
Double-melt stainless steel tubes used in window-coupling
Industrial small-diameter precision stainless steel tubing
Precision dispensing needles
Microphone, headphone, and communication audio tubes

Packaging & Ready Products

Frequently Asked Questions

What are the main applications of stainless steel capillary tubes?

Capillary tubes are widely used in medical treatments, temperature-guided industrial controls, sensors, fiber-optics, micro-antennas, pen cores, precision electronic components, and various aviation and communications systems.

Which steel grades are available for coiled tubing?

Standard grades include 304, 304L, 316L, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625. Other duplex, superduplex, and nickel alloys are available upon request.

What are the dimensions and tolerance configurations?

Diameters range from 3mm (0.118’’) to 25.4mm (1.00’’) OD with a wall thickness from 0.5mm (0.020’’) to 3mm (0.118’’). General diameter tolerances can reach up to ±0.01mm. Capillary tubes feature a maximum bore of 0.0158 in.

How is the cleanliness and surface quality of the tubes ensured?

The inside and outside surfaces undergo bright annealing and rigorous cleaning processes. This guarantees that the tubes are seamless, leak-free, and inside surfaces are kept free of oil, grease, or particulate contamination.

What quality tests are executed before shipping?

We perform comprehensive tests including non-destructive testing, hydrostatic testing, surface finish controls, dimensional accuracy measurements, flare/coning tests, and full mechanical and chemical property evaluations.

Which standards govern the production of these coiled tubes?

All tubes are manufactured in accordance with strict international standards, including ASTM A269-2002, JIS G4305, GB/T 12770-2002, and GB/T12771-2002.