HOME > PRODUCTS > Instrument TubeHOME > PRODUCTS > Instr. Tube
Products
Manufacturing Products
H.X. Tube & Pipe
U Bending Tube
Finned Tube
Instrument Tube
Pre-insulated Tube
Precise Tube
SMLS Coil Tube
Outsourcing Products
Butt Weld Fitting
Dish head
Cylindrical Shell
Round Bar
Flange & Tube Sheet
Plates
Bolts & Nuts
Other Handling Products
Customer Service
WhatsApp
Plz scan below QR code
ASEA METAL WhatsApp QR code
WeChat : aseametal
[email protected]
Instrument Tube
 

H.X. Tube
U Bending
Tube
Finned Tube
Instrument Tube

Pre-insulated
Tubing Bundle
Precise Tube
SMLS Coil
Tube
Pipe
 
Instrumentation Tube

Instrumentation Tubing (Seamless)
ASEA METAL supplies instrumentation tubing (seamless) in Korea for oil & gas, offshore and process control. We support stainless, duplex and nickel alloys with MTC (EN 10204 3.1) and inspection options. We produce seamless instrumentation tubing in Korea for control, sampling and hydraulic service. For many buyers, 316L (2.5% Mo) is specified for chloride resistance, typically as ASTM A269 TP316L. We also support ASTM A269 TP304L, and where heat/exchanger specs apply, ASTM A213 TP316L can be reviewed depending on requirements. PMI/ECT and other NDT options can be matched to your inspection plan together with MTC (EN 10204 3.1 / 3.2). ASEA METAL is a Korean manufacturer focused on stable small-OD supply and export-ready documentation.
Quick specs
  • Materials
 304/304L, 316/316L, 316Ti, duplex (S31803/S32205), super duplex (S32750), nickel alloys (Alloy 600/625/825)
  • Standards
 ASTM / ASME / AISI / DIN / JIS / KS (project specifications on request)
  • Size range
 OD 6–38 mm and 1/8"–1" (typical, depending on grade)
  • Inspection
 MTC (EN 10204 3.1), PMI / Hydro / NDT (as required)
Request a quotation (RFQ)
For a quick quotation, ASEA METAL recommends including OD, WT, length, material/grade, standard/spec, quantity, inspection scope and delivery destination. Drawings are welcome for critical applications.
Contact / RFQ Heat Exchanger Tubes
Do you provide MTC and inspection options?

Yes. MTC (EN 10204 3.1) is available. PMI, Hydro and NDT can be offered depending on requirements.

What sizes do you supply for instrumentation tubing?

Typical supply range includes OD 6 mm to 38 mm and 1/8 inch to 1 inch depending on grade. Please share OD, WT and length in your RFQ.
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
 
Application code
ASTM, ASME, AISI, DIN, JIS, KS
 
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
No O.D x W.T
31   22mm X 2.0 mm
32   22mm X 2.5 mm
33   25mm X 2.0 mm
34   25mm X 2.5 mm
35   25mm X 3.0 mm
36   28mm X 2.0 mm
37   28mm X 2.5 mm
38   28mm X 3.0 mm
39   30mm X 2.0 mm
40   30mm X 2.5 mm
41   30mm X 3.0 mm
42   30mm X 4.0 mm
43   35mm X 2.0 mm
44   35mm X 2.5 mm
45   35mm X 3.0 mm
46   38mm X 3.0 mm
47   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
 
 
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.
[Technical Data] Chemical Composition (%) - ASTM A213 / A269
Grade C (Max) Mn (Max) P (Max) S (Max) Si (Max) Ni Cr Mo
TP304/304L0.0352.000.0450.0300.758.0-11.018.0-20.0-
TP316/316L0.0352.000.0450.0350.7510.0-14.016.0-18.02.0-3.0
TP3210.0802.000.0450.0350.759.0-12.017.0-19.0Ti 5x(C+N)
S318030.0302.000.0300.0201.004.5-6.521.0-23.02.5-3.5
S327500.0301.200.0350.0200.806.0-8.024.0-26.03.0-5.0
Alloy 8250.051.00.030.030.538.0-46.019.5-23.52.5-3.5
Alloy 6250.100.50.0150.0150.558.0 min20.0-23.08.0-10.0
Monel 4000.302.0-0.0240.563.0 min-(Cu 28-34)
[Mechanical Properties] Tensile, Yield & Hardness
Material Grade Tensile Strength (min) Yield Strength (min) Elongation (min) Hardness (max)
TP316L / 304L485 MPa (70 ksi)170 MPa (25 ksi)35%HRB 80
Duplex S31803620 MPa (90 ksi)450 MPa (65 ksi)25%HRC 25
Super Duplex S32750795 MPa (116 ksi)550 MPa (80 ksi)15%HRC 32
Alloy C276690 MPa (100 ksi)283 MPa (41 ksi)40%HRB 100
Titanium Gr.2345 MPa (50 ksi)275 MPa (40 ksi)20%HRB 80
316Ti (Titanium)515 MPa (75 ksi)205 MPa (30 ksi)35%HRB 90
[Dimensional Tolerances] Cold Drawn Seamless Tube
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
[Usage & Applications] Industrial Scope
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.