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| Tubes & Pipes |
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| Instrument Tube |
| Material |
 Stainless steel |
304/304L, 316/316L, 316LN, 316Ti, 310S, 321, 317L |
| Duplex |
S31803, S32205, S32750 |
| Alloy metal |
TITANIUM GR.2, ALLOY 600, ALLOY 625, ALLOY 825 |
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| Application code |
| ASTM, ASME, AISI, DIN, JIS, KS |
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| General size of Instrument tube |
| No |
O.D x W.T |
| 1 |
6mm X 1.0 mm |
| 2 |
6mm X 1.5 mm |
| 3 |
8mm X 1.0 mm |
| 4 |
8mm X 1.2 mm |
| 5 |
8mm X 1.5 mm |
| 6 |
8mm X 2.0 mm |
| 7 |
10mm X 1.0 mm |
| 8 |
10mm X 1.2 mm |
| 9 |
10mm X 1.5 mm |
| 10 |
10mm X 2.0 mm |
| 11 |
12mm X 1.0 mm |
| 12 |
12mm X 1.2 mm |
| 13 |
12mm X 1.5 mm |
| 14 |
12mm X 2.0 mm |
| 15 |
15mm X 1.0 mm |
| 16 |
15mm X 1.2 mm |
| 17 |
15mm X 1.5 mm |
| 18 |
15mm X 2.0 mm |
| 19 |
15mm X 2.5 mm |
| 20 |
16mm X 1.5 mm |
| 21 |
16mm X 2.0 mm |
| 22 |
16mm X 2.5 mm |
| 23 |
18mm X 1.2 mm |
| 24 |
18mm X 1.5 mm |
| 25 |
18mm X 2.0 mm |
| 26 |
20mm X 1.0 mm |
| 27 |
20mm X 1.5 mm |
| 28 |
20mm X 2.0 mm |
| 29 |
20mm X 2.5 mm |
| 30 |
22mm X 1.5 mm |
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| No |
O.D x W.T |
| 31 |
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22mm X 2.0 mm |
| 32 |
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22mm X 2.5 mm |
| 33 |
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25mm X 2.0 mm |
| 34 |
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25mm X 2.5 mm |
| 35 |
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25mm X 3.0 mm |
| 36 |
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28mm X 2.0 mm |
| 37 |
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28mm X 2.5 mm |
| 38 |
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28mm X 3.0 mm |
| 39 |
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30mm X 2.0 mm |
| 40 |
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30mm X 2.5 mm |
| 41 |
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30mm X 3.0 mm |
| 42 |
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30mm X 4.0 mm |
| 43 |
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35mm X 2.0 mm |
| 44 |
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35mm X 2.5 mm |
| 45 |
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35mm X 3.0 mm |
| 46 |
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38mm X 3.0 mm |
| 47 |
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38mm X 4.0 mm |
| 48 |
1/8 inch X 0.025 inch |
3.18mm X 0.71 mm |
| 49 |
5/16 inch X 0.035 inch |
7.94mm X 0.89 mm |
| 50 |
1/4 inch X 0.028 inch |
6.35mm X 0.71 mm |
| 51 |
1/4 inch X 0.035 inch |
6.35mm X 0.89 mm |
| 52 |
1/4 inch X 0.049 inch |
6.35mm X 1.24 mm |
| 53 |
1/4 inch X 0.065 inch |
6.35mm X 1.65 mm |
| 54 |
3/8 inch X 0.035 inch |
9.53mm X 0.89 mm |
| 55 |
3/8 inch X 0.049 inch |
9.53mm X 1.24 mm |
| 56 |
3/8 inch X 0.065 inch |
9.53mm X 1.65 mm |
| 57 |
1/2 inch X 0.035 inch |
12.70mm X 0.89 mm |
| 58 |
1/2 inch X 0.049 inch |
12.70mm X 1.24 mm |
| 59 |
1/2 inch X 0.065 inch |
12.70mm X 1.65 mm |
| 60 |
1/2 inch X 0.083 inch |
12.70mm X 2.11 mm |
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ASEA METAL: Global Specialist in High-Precision Instrumentation Tubing
ASEA METAL is a leading global manufacturer and supplier specializing in
High-Precision Instrumentation Tubing,
the critical component for Petrochemical, Offshore, Semiconductor, and Power Generation industries.
We provide a comprehensive range of Seamless Stainless Steel and Nickel Alloy Tubes,
manufactured to the highest international standards including ASTM, ASME, JIS, and EN.
Our expertise covers a wide spectrum of sizes from 6mm to 38mm (OD) and
1/8" to 1" (OD), ensuring exceptional dimensional tolerances and superior
surface finishes for maximum corrosion resistance. Every batch is supplied with a full
EN 10204 3.1 MTC (Mill Test Certificate), guaranteeing reliability for
your high-pressure hydraulic and control systems.
Trust ASEA METAL for your 316L, Duplex, and Super Alloy tubing solutions.
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[Technical Data] Chemical Composition (%) - ASTM A213 / A269
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| Grade |
C (Max) |
Mn (Max) |
P (Max) |
S (Max) |
Si (Max) |
Ni |
Cr |
Mo |
| TP304/304L | 0.035 | 2.00 | 0.045 | 0.030 | 0.75 | 8.0-11.0 | 18.0-20.0 | - |
| TP316/316L | 0.035 | 2.00 | 0.045 | 0.035 | 0.75 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 |
| TP321 | 0.080 | 2.00 | 0.045 | 0.035 | 0.75 | 9.0-12.0 | 17.0-19.0 | Ti 5x(C+N) |
| S31803 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 |
| S32750 | 0.030 | 1.20 | 0.035 | 0.020 | 0.80 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 |
| Alloy 825 | 0.05 | 1.0 | 0.03 | 0.03 | 0.5 | 38.0-46.0 | 19.5-23.5 | 2.5-3.5 |
| Alloy 625 | 0.10 | 0.5 | 0.015 | 0.015 | 0.5 | 58.0 min | 20.0-23.0 | 8.0-10.0 |
| Monel 400 | 0.30 | 2.0 | - | 0.024 | 0.5 | 63.0 min | - | (Cu 28-34) |
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[Mechanical Properties] Tensile, Yield & Hardness
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| Material Grade |
Tensile Strength (min) |
Yield Strength (min) |
Elongation (min) |
Hardness (max) |
| TP316L / 304L | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | HRB 80 |
| Duplex S31803 | 620 MPa (90 ksi) | 450 MPa (65 ksi) | 25% | HRC 25 |
| Super Duplex S32750 | 795 MPa (116 ksi) | 550 MPa (80 ksi) | 15% | HRC 32 |
| Alloy C276 | 690 MPa (100 ksi) | 283 MPa (41 ksi) | 40% | HRB 100 |
| Titanium Gr.2 | 345 MPa (50 ksi) | 275 MPa (40 ksi) | 20% | HRB 80 |
| 316Ti (Titanium) | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | HRB 90 |
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[Dimensional Tolerances] Cold Drawn Seamless Tube
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| Outside Diameter (OD) |
OD Tolerance |
WT Tolerance |
Length Tolerance |
| Under 1/2" (12.7mm) |
+/- 0.13mm |
+/- 15% |
+ 3.18mm / -0mm |
| 1/2" to 1-1/2" (38.1mm) |
+/- 0.13mm |
+/- 10% |
+ 3.18mm / -0mm |
| Over 1-1/2" to 3.5" (88.9mm) |
+/- 0.25mm |
+/- 10% |
+ 4.76mm / -0mm |
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[Usage & Applications] Industrial Scope
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| Industry Field |
Key Application Keywords for Instrument Tube |
| Oil & Gas / Offshore |
Chemical injection lines, Umbilical lines, Control systems, Wellhead control panels, Hydraulic control. |
| Power Generation |
Steam tracing, Heat exchanger tubes, Analyzer lines, Boiler instrumentation, Condenser tubing. |
| Semiconductor / High Purity |
Gas delivery systems, BA/EP grade precise tubing, Ultra-high purity (UHP) gas lines. |
| Marine & Shipbuilding |
LNG carrier fuel piping, Sea water cooling systems, Hydraulic steering lines, Engine fuel injection. |
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Related keywords & industry standards
ASEA METAL provides high-quality Instrument Tube 316L, 304L, S31803, S32750 for global industrial systems. Standard sizes: 6mm, 8mm, 10mm, 12mm, 15mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 38mm OD. Inch sizes: 1/8, 1/4, 3/8, 1/2, 3/4, 1 inch. Compliant with ASTM A213, ASTM A269, ASTM A312, JIS G3459, EN 10216-5. Applications: Oil & Gas instrumentation, Offshore hydraulic lines, Power plant steam tracing, Semiconductor gas delivery, Shipbuilding fuel lines, Chemical plant sampling systems. Supplying worldwide from Korea with MTC EN10204 3.1 certification.
Seamless Instrumentation Tubing, Stainless Steel 316L Tube Manufacturer, Duplex S31803 Tube Specs, Super Duplex S32750 Properties, Alloy 625 825 Tubing, Monel 400, Inconel 600, Titanium Grade 2, ASTM A269 Tolerance Table, ASTM A213 Chemical Composition, Mechanical Properties Tensile Yield Strength, Hardness HRB 80, Eddy Current Test, Hydrostatic Test, 6mm 8mm 10mm 12mm tube pressure rating, High pressure hydraulic tube, Capillary tube, Coiled tubing, Multi-core bundle, Pre-insulated tubing, PVC coated tube, Gas chromatography tubing, Sampling system components, Heat exchanger U-bend tube, Finned tube, Korea Steel Export, Japan JIS Standard Tubing, European EN Standard, Global Shipping ASEA METAL Korea
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